Add group to favorites
Back to post list
Send new message to group Search:
Post Subject:
REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
I have posted this once today, but for some reason it did not post.
If anyone finds it, sorry for the duplicate post.
Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
the 4.11 ratio would be better for me. I currently have 31" BFG All
Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
sort in the future when these wear out. I will never upgrade to
bigger than a 33" tire. As for off-roading, I do some light trail
riding and the occasional hop in the mud puddle when I find one that
looks fun. 80% of my driving is highway at approximately 70 miles
round trip at a speed of anywhere from 60-70 mph. The other 20% is
split between city driving (10%), and off-roading (10%). My main goal
is to get my Jeep to drive as close as possible to the way it did bone
stock (being able to use my 6th gear on the freeway) and to prevent
excessive wear and tear on my clutch and engine parts. Someone please
help! : D
'06 TJ (4.0L with I-6)
6 speed manual
Dana 30 front/35 rear
current 3.07s
P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
44s)? I don't know if this makes any difference as far as which gear
ratio to go with, but where I live (upstate NY), there can be quite a
bit of snow from Dec. - Apr.
I have posted this once today, but for some reason it did not post.
If anyone finds it, sorry for the duplicate post.
Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
the 4.11 ratio would be better for me. I currently have 31" BFG All
Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
sort in the future when these wear out. I will never upgrade to
bigger than a 33" tire. As for off-roading, I do some light trail
riding and the occasional hop in the mud puddle when I find one that
looks fun. 80% of my driving is highway at approximately 70 miles
round trip at a speed of anywhere from 60-70 mph. The other 20% is
split between city driving (10%), and off-roading (10%). My main goal
is to get my Jeep to drive as close as possible to the way it did bone
stock (being able to use my 6th gear on the freeway) and to prevent
excessive wear and tear on my clutch and engine parts. Someone please
help! : D
'06 TJ (4.0L with I-6)
6 speed manual
Dana 30 front/35 rear
current 3.07s
P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
44s)? I don't know if this makes any difference as far as which gear
ratio to go with, but where I live (upstate NY), there can be quite a
bit of snow from Dec. - Apr.
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
You are viewing this Usenet Newsgroup via Google groups. Sometimes they
can take days to update their Usenet feed. I am on a dedicated Usenet
server that updates almost instantly.
You get what you pay for....
I believe you will want at the 'highest', 4.11 gears. Others like even
'lower' gears like the 4.56 I think it is for 33's. The 3.73's are too
high still and will make very little difference.
Because you aren't going to Baha it off road or run bigger than 33's,
the D35 rear will be fine.
I doubt you will want a rear locker or even a limited slip due to your
snow load. I am in Canada and have the same snow.
A locker or limited slip is called a 'Low side finder' and does not
track in a straight line well in snow, especially with a short wheelbase
Jeep. Some can't even run the trails in the winter, because they have
to crabwalk up an off camber trail and the trails are too narrow for
this. When you see a pickup or something crabbing it's way up a snowy
hill sideways, that is due to a locked rear end or too much gas on a
limited slip, not fun. If I was going to run a limited or locker, I
would want it in the front.
It is a different story on dirt, where the limited slip or locker shines.
With an open diff, one wheel acts like a rudder and you track straight.
My $0.02,
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http :// www .imagestation,com /album/pictures.html?id!15147590
(More Off Road album links at bottom of the view page)
Tracie wrote:
> I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
You are viewing this Usenet Newsgroup via Google groups. Sometimes they
can take days to update their Usenet feed. I am on a dedicated Usenet
server that updates almost instantly.
You get what you pay for....
I believe you will want at the 'highest', 4.11 gears. Others like even
'lower' gears like the 4.56 I think it is for 33's. The 3.73's are too
high still and will make very little difference.
Because you aren't going to Baha it off road or run bigger than 33's,
the D35 rear will be fine.
I doubt you will want a rear locker or even a limited slip due to your
snow load. I am in Canada and have the same snow.
A locker or limited slip is called a 'Low side finder' and does not
track in a straight line well in snow, especially with a short wheelbase
Jeep. Some can't even run the trails in the winter, because they have
to crabwalk up an off camber trail and the trails are too narrow for
this. When you see a pickup or something crabbing it's way up a snowy
hill sideways, that is due to a locked rear end or too much gas on a
limited slip, not fun. If I was going to run a limited or locker, I
would want it in the front.
It is a different story on dirt, where the limited slip or locker shines.
With an open diff, one wheel acts like a rudder and you track straight.
My $0.02,
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http :// www .imagestation,com /album/pictures.html?id!15147590
(More Off Road album links at bottom of the view page)
Tracie wrote:
> I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
Re: Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
On Fri, 21 Sep 2007 11:39:32 -0400, Mike Romain <romainm@sympatico.ca>
wrote:
>I believe you will want at the 'highest', 4.11 gears. Others like even
>'lower' gears like the 4.56 I think it is for 33's. The 3.73's are too
>high still and will make very little difference.
Given this vehicle has OD axle ratios are not as scarey. A 4.10 would
be a big improvement and might be want you want based on your driving.
A 4.56 would play better here if you live in a hilly area or at a
higher elevation too. One more note, 3.73 with 33's is about the same
in effective gear ratio as stock 225's and 3.07 gears which is no barn
burner either. So you really do not want to go 3.73 route unless you
plan to go to smaller tires than 33's.
-----------------
TheSnoMan,com
On Fri, 21 Sep 2007 11:39:32 -0400, Mike Romain <romainm@sympatico.ca>
wrote:
>I believe you will want at the 'highest', 4.11 gears. Others like even
>'lower' gears like the 4.56 I think it is for 33's. The 3.73's are too
>high still and will make very little difference.
Given this vehicle has OD axle ratios are not as scarey. A 4.10 would
be a big improvement and might be want you want based on your driving.
A 4.56 would play better here if you live in a hilly area or at a
higher elevation too. One more note, 3.73 with 33's is about the same
in effective gear ratio as stock 225's and 3.07 gears which is no barn
burner either. So you really do not want to go 3.73 route unless you
plan to go to smaller tires than 33's.
-----------------
TheSnoMan,com
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
Tracie wrote:
> I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
Your first post showed up here, but I will reply to this one. Sixth gear
in your transmission has a .84 gear ratio, meaning that it will reduce
your RPM by 16% when you use it.
I'll assume your stock tires were 29". So with the 3.07 gears your RPM
in 5th gear at 60MPH would have been approximately 1750
Assuming 60MPH at highway speed, your RPM will be as follows:
3.73 with 31" tires = 2040 RPM
3.73 with 33" tires = 1920 RPM
4.11 with 31" tires = 2250 RPM
4.11 with 33" tires = 2100 RPM
These won't be exact because of the tires. They rarely measure the same
as their advertised size. Anyway, if you're definitely going to 33"
tires, I would personally just go with the 4.11s. Even with the 31"
tires your highway RPM wont be excessive, and the driveability in 5th
gear will be a little better than with the 3.73s and much better than
with the 3.07s.
There are a lot of articles out there about the D35 rear being too weak
for off roading with big tires, but for your application you should be
OK. The Dana 30 front is more than adequate.
One note about changing gears. Make sure you find a reputable shop that
knows how to do this. It is not difficult with the right tools, but it
is definitely not for the average home mechanic. You may also want to
look into a locker for the rear axle, which will give you more traction
off road, but some of them can make driving in the snow a little tricky
unless you have one of the switchable lockers. Regearing can get
expensive when you start upgrading to Dana 44s, lockers, etc. so be
prepared to spend some pretty serious cash. You may want to keep your
eyes open for a used D44 with the gear ratio you decide to use. They are
out there.
Chris
Tracie wrote:
> I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
Your first post showed up here, but I will reply to this one. Sixth gear
in your transmission has a .84 gear ratio, meaning that it will reduce
your RPM by 16% when you use it.
I'll assume your stock tires were 29". So with the 3.07 gears your RPM
in 5th gear at 60MPH would have been approximately 1750
Assuming 60MPH at highway speed, your RPM will be as follows:
3.73 with 31" tires = 2040 RPM
3.73 with 33" tires = 1920 RPM
4.11 with 31" tires = 2250 RPM
4.11 with 33" tires = 2100 RPM
These won't be exact because of the tires. They rarely measure the same
as their advertised size. Anyway, if you're definitely going to 33"
tires, I would personally just go with the 4.11s. Even with the 31"
tires your highway RPM wont be excessive, and the driveability in 5th
gear will be a little better than with the 3.73s and much better than
with the 3.07s.
There are a lot of articles out there about the D35 rear being too weak
for off roading with big tires, but for your application you should be
OK. The Dana 30 front is more than adequate.
One note about changing gears. Make sure you find a reputable shop that
knows how to do this. It is not difficult with the right tools, but it
is definitely not for the average home mechanic. You may also want to
look into a locker for the rear axle, which will give you more traction
off road, but some of them can make driving in the snow a little tricky
unless you have one of the switchable lockers. Regearing can get
expensive when you start upgrading to Dana 44s, lockers, etc. so be
prepared to spend some pretty serious cash. You may want to keep your
eyes open for a used D44 with the gear ratio you decide to use. They are
out there.
Chris
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
4.56 is as close as it gets to how it was stock.
Carl
"Tracie" <brainart@upstate.edu> wrote in message
news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
4.56 is as close as it gets to how it was stock.
Carl
"Tracie" <brainart@upstate.edu> wrote in message
news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>I have posted this once today, but for some reason it did not post.
> If anyone finds it, sorry for the duplicate post.
>
> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
> the 4.11 ratio would be better for me. I currently have 31" BFG All
> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
> sort in the future when these wear out. I will never upgrade to
> bigger than a 33" tire. As for off-roading, I do some light trail
> riding and the occasional hop in the mud puddle when I find one that
> looks fun. 80% of my driving is highway at approximately 70 miles
> round trip at a speed of anywhere from 60-70 mph. The other 20% is
> split between city driving (10%), and off-roading (10%). My main goal
> is to get my Jeep to drive as close as possible to the way it did bone
> stock (being able to use my 6th gear on the freeway) and to prevent
> excessive wear and tear on my clutch and engine parts. Someone please
> help! : D
>
> '06 TJ (4.0L with I-6)
> 6 speed manual
> Dana 30 front/35 rear
> current 3.07s
>
> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
> 44s)? I don't know if this makes any difference as far as which gear
> ratio to go with, but where I live (upstate NY), there can be quite a
> bit of snow from Dec. - Apr.
>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
tires were 29". It's s simple ratio between the tire diameter and gear
ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
ratio between tire diameter and gear ratio, her RPM will remain the
same. To calculate the gear ratio, she just needs to divide the tire
diameter by 9.45 to get the proper gear ratio if she wants to achieve
the same RPM as original.
for 31s it would be 3.26
for 33s it would be 3.49
Chris
Carl S wrote:
> 4.56 is as close as it gets to how it was stock.
>
> Carl
>
> "Tracie" <brainart@upstate.edu> wrote in message
> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>> I have posted this once today, but for some reason it did not post.
>> If anyone finds it, sorry for the duplicate post.
>>
>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>> sort in the future when these wear out. I will never upgrade to
>> bigger than a 33" tire. As for off-roading, I do some light trail
>> riding and the occasional hop in the mud puddle when I find one that
>> looks fun. 80% of my driving is highway at approximately 70 miles
>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>> split between city driving (10%), and off-roading (10%). My main goal
>> is to get my Jeep to drive as close as possible to the way it did bone
>> stock (being able to use my 6th gear on the freeway) and to prevent
>> excessive wear and tear on my clutch and engine parts. Someone please
>> help! : D
>>
>> '06 TJ (4.0L with I-6)
>> 6 speed manual
>> Dana 30 front/35 rear
>> current 3.07s
>>
>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>> 44s)? I don't know if this makes any difference as far as which gear
>> ratio to go with, but where I live (upstate NY), there can be quite a
>> bit of snow from Dec. - Apr.
>>
>
>
Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
tires were 29". It's s simple ratio between the tire diameter and gear
ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
ratio between tire diameter and gear ratio, her RPM will remain the
same. To calculate the gear ratio, she just needs to divide the tire
diameter by 9.45 to get the proper gear ratio if she wants to achieve
the same RPM as original.
for 31s it would be 3.26
for 33s it would be 3.49
Chris
Carl S wrote:
> 4.56 is as close as it gets to how it was stock.
>
> Carl
>
> "Tracie" <brainart@upstate.edu> wrote in message
> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>> I have posted this once today, but for some reason it did not post.
>> If anyone finds it, sorry for the duplicate post.
>>
>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>> sort in the future when these wear out. I will never upgrade to
>> bigger than a 33" tire. As for off-roading, I do some light trail
>> riding and the occasional hop in the mud puddle when I find one that
>> looks fun. 80% of my driving is highway at approximately 70 miles
>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>> split between city driving (10%), and off-roading (10%). My main goal
>> is to get my Jeep to drive as close as possible to the way it did bone
>> stock (being able to use my 6th gear on the freeway) and to prevent
>> excessive wear and tear on my clutch and engine parts. Someone please
>> help! : D
>>
>> '06 TJ (4.0L with I-6)
>> 6 speed manual
>> Dana 30 front/35 rear
>> current 3.07s
>>
>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>> 44s)? I don't know if this makes any difference as far as which gear
>> ratio to go with, but where I live (upstate NY), there can be quite a
>> bit of snow from Dec. - Apr.
>>
>
>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for 33's
and 4.88 for 35's.
Carl
"c" <c@me.org> wrote in message
news:46f41cce$0$11026$4c368faf@roadrunner,com ...
> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
> tires were 29". It's s simple ratio between the tire diameter and gear
> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
> ratio between tire diameter and gear ratio, her RPM will remain the same.
> To calculate the gear ratio, she just needs to divide the tire diameter by
> 9.45 to get the proper gear ratio if she wants to achieve the same RPM as
> original.
>
> for 31s it would be 3.26
> for 33s it would be 3.49
>
> Chris
>
> Carl S wrote:
>> 4.56 is as close as it gets to how it was stock.
>>
>> Carl
>>
>> "Tracie" <brainart@upstate.edu> wrote in message
>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>> I have posted this once today, but for some reason it did not post.
>>> If anyone finds it, sorry for the duplicate post.
>>>
>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>> sort in the future when these wear out. I will never upgrade to
>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>> riding and the occasional hop in the mud puddle when I find one that
>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>> split between city driving (10%), and off-roading (10%). My main goal
>>> is to get my Jeep to drive as close as possible to the way it did bone
>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>> excessive wear and tear on my clutch and engine parts. Someone please
>>> help! : D
>>>
>>> '06 TJ (4.0L with I-6)
>>> 6 speed manual
>>> Dana 30 front/35 rear
>>> current 3.07s
>>>
>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>> 44s)? I don't know if this makes any difference as far as which gear
>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>> bit of snow from Dec. - Apr.
>>>
>>
Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for 33's
and 4.88 for 35's.
Carl
"c" <c@me.org> wrote in message
news:46f41cce$0$11026$4c368faf@roadrunner,com ...
> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
> tires were 29". It's s simple ratio between the tire diameter and gear
> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
> ratio between tire diameter and gear ratio, her RPM will remain the same.
> To calculate the gear ratio, she just needs to divide the tire diameter by
> 9.45 to get the proper gear ratio if she wants to achieve the same RPM as
> original.
>
> for 31s it would be 3.26
> for 33s it would be 3.49
>
> Chris
>
> Carl S wrote:
>> 4.56 is as close as it gets to how it was stock.
>>
>> Carl
>>
>> "Tracie" <brainart@upstate.edu> wrote in message
>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>> I have posted this once today, but for some reason it did not post.
>>> If anyone finds it, sorry for the duplicate post.
>>>
>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>> sort in the future when these wear out. I will never upgrade to
>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>> riding and the occasional hop in the mud puddle when I find one that
>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>> split between city driving (10%), and off-roading (10%). My main goal
>>> is to get my Jeep to drive as close as possible to the way it did bone
>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>> excessive wear and tear on my clutch and engine parts. Someone please
>>> help! : D
>>>
>>> '06 TJ (4.0L with I-6)
>>> 6 speed manual
>>> Dana 30 front/35 rear
>>> current 3.07s
>>>
>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>> 44s)? I don't know if this makes any difference as far as which gear
>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>> bit of snow from Dec. - Apr.
>>>
>>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
And 5.38s in Real Jeeps.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /
"Carl S" <carlsaiyed@REMOVE.hotmail,com > wrote in message
news:_sCdneKOMLclymnbnZ2dnUVZ_j-dnZ2d@comcast,com ...
> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for
33's
> and 4.88 for 35's.
>
> Carl
--
Posted via a free Usenet account from http :// www .teranews,com
And 5.38s in Real Jeeps.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /
"Carl S" <carlsaiyed@REMOVE.hotmail,com > wrote in message
news:_sCdneKOMLclymnbnZ2dnUVZ_j-dnZ2d@comcast,com ...
> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for
33's
> and 4.88 for 35's.
>
> Carl
--
Posted via a free Usenet account from http :// www .teranews,com
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
I'm not disputing that those gear ratios would work the best, but you
stated that they would be closest to stock, and that is simply not true.
It is a simple mathematical equation to calculate the proper gear ratio,
and nothing more.
Chris
Carl S wrote:
> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for 33's
> and 4.88 for 35's.
>
> Carl
>
>
> "c" <c@me.org> wrote in message
> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>> tires were 29". It's s simple ratio between the tire diameter and gear
>> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
>> ratio between tire diameter and gear ratio, her RPM will remain the same.
>> To calculate the gear ratio, she just needs to divide the tire diameter by
>> 9.45 to get the proper gear ratio if she wants to achieve the same RPM as
>> original.
>>
>> for 31s it would be 3.26
>> for 33s it would be 3.49
>>
>> Chris
>>
>> Carl S wrote:
>>> 4.56 is as close as it gets to how it was stock.
>>>
>>> Carl
>>>
>>> "Tracie" <brainart@upstate.edu> wrote in message
>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>> I have posted this once today, but for some reason it did not post.
>>>> If anyone finds it, sorry for the duplicate post.
>>>>
>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>> sort in the future when these wear out. I will never upgrade to
>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>> riding and the occasional hop in the mud puddle when I find one that
>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>> split between city driving (10%), and off-roading (10%). My main goal
>>>> is to get my Jeep to drive as close as possible to the way it did bone
>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>> excessive wear and tear on my clutch and engine parts. Someone please
>>>> help! : D
>>>>
>>>> '06 TJ (4.0L with I-6)
>>>> 6 speed manual
>>>> Dana 30 front/35 rear
>>>> current 3.07s
>>>>
>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>> bit of snow from Dec. - Apr.
>>>>
>
I'm not disputing that those gear ratios would work the best, but you
stated that they would be closest to stock, and that is simply not true.
It is a simple mathematical equation to calculate the proper gear ratio,
and nothing more.
Chris
Carl S wrote:
> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for 33's
> and 4.88 for 35's.
>
> Carl
>
>
> "c" <c@me.org> wrote in message
> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>> tires were 29". It's s simple ratio between the tire diameter and gear
>> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that same
>> ratio between tire diameter and gear ratio, her RPM will remain the same.
>> To calculate the gear ratio, she just needs to divide the tire diameter by
>> 9.45 to get the proper gear ratio if she wants to achieve the same RPM as
>> original.
>>
>> for 31s it would be 3.26
>> for 33s it would be 3.49
>>
>> Chris
>>
>> Carl S wrote:
>>> 4.56 is as close as it gets to how it was stock.
>>>
>>> Carl
>>>
>>> "Tracie" <brainart@upstate.edu> wrote in message
>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>> I have posted this once today, but for some reason it did not post.
>>>> If anyone finds it, sorry for the duplicate post.
>>>>
>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>> sort in the future when these wear out. I will never upgrade to
>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>> riding and the occasional hop in the mud puddle when I find one that
>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>> split between city driving (10%), and off-roading (10%). My main goal
>>>> is to get my Jeep to drive as close as possible to the way it did bone
>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>> excessive wear and tear on my clutch and engine parts. Someone please
>>>> help! : D
>>>>
>>>> '06 TJ (4.0L with I-6)
>>>> 6 speed manual
>>>> Dana 30 front/35 rear
>>>> current 3.07s
>>>>
>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>> bit of snow from Dec. - Apr.
>>>>
>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
Like: http :// www .oly4x4,com /gearratios.htm
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /
"c" <c@me.org> wrote in message
news:46f46642$0$17112$4c368faf@roadrunner,com ...
> I'm not disputing that those gear ratios would work the best, but you
> stated that they would be closest to stock, and that is simply not true.
> It is a simple mathematical equation to calculate the proper gear ratio,
> and nothing more.
>
> Chris
--
Posted via a free Usenet account from http :// www .teranews,com
Like: http :// www .oly4x4,com /gearratios.htm
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /
"c" <c@me.org> wrote in message
news:46f46642$0$17112$4c368faf@roadrunner,com ...
> I'm not disputing that those gear ratios would work the best, but you
> stated that they would be closest to stock, and that is simply not true.
> It is a simple mathematical equation to calculate the proper gear ratio,
> and nothing more.
>
> Chris
--
Posted via a free Usenet account from http :// www .teranews,com
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
She had 215's....
You are wrong.
Mike
c wrote:
> I'm not disputing that those gear ratios would work the best, but you
> stated that they would be closest to stock, and that is simply not true.
> It is a simple mathematical equation to calculate the proper gear ratio,
> and nothing more.
>
> Chris
>
> Carl S wrote:
>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is
>> for 33's and 4.88 for 35's.
>>
>> Carl
>>
>>
>> "c" <c@me.org> wrote in message
>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>>> tires were 29". It's s simple ratio between the tire diameter and
>>> gear ratio to maintain the same RPM. 29/3.07=9.45. If she maintains
>>> that same ratio between tire diameter and gear ratio, her RPM will
>>> remain the same. To calculate the gear ratio, she just needs to
>>> divide the tire diameter by 9.45 to get the proper gear ratio if she
>>> wants to achieve the same RPM as original.
>>>
>>> for 31s it would be 3.26
>>> for 33s it would be 3.49
>>>
>>> Chris
>>>
>>> Carl S wrote:
>>>> 4.56 is as close as it gets to how it was stock.
>>>>
>>>> Carl
>>>>
>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>> I have posted this once today, but for some reason it did not post.
>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>
>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>> sort in the future when these wear out. I will never upgrade to
>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>> split between city driving (10%), and off-roading (10%). My main goal
>>>>> is to get my Jeep to drive as close as possible to the way it did bone
>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>> excessive wear and tear on my clutch and engine parts. Someone please
>>>>> help! : D
>>>>>
>>>>> '06 TJ (4.0L with I-6)
>>>>> 6 speed manual
>>>>> Dana 30 front/35 rear
>>>>> current 3.07s
>>>>>
>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>>> bit of snow from Dec. - Apr.
>>>>>
>>
She had 215's....
You are wrong.
Mike
c wrote:
> I'm not disputing that those gear ratios would work the best, but you
> stated that they would be closest to stock, and that is simply not true.
> It is a simple mathematical equation to calculate the proper gear ratio,
> and nothing more.
>
> Chris
>
> Carl S wrote:
>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is
>> for 33's and 4.88 for 35's.
>>
>> Carl
>>
>>
>> "c" <c@me.org> wrote in message
>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>>> tires were 29". It's s simple ratio between the tire diameter and
>>> gear ratio to maintain the same RPM. 29/3.07=9.45. If she maintains
>>> that same ratio between tire diameter and gear ratio, her RPM will
>>> remain the same. To calculate the gear ratio, she just needs to
>>> divide the tire diameter by 9.45 to get the proper gear ratio if she
>>> wants to achieve the same RPM as original.
>>>
>>> for 31s it would be 3.26
>>> for 33s it would be 3.49
>>>
>>> Chris
>>>
>>> Carl S wrote:
>>>> 4.56 is as close as it gets to how it was stock.
>>>>
>>>> Carl
>>>>
>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>> I have posted this once today, but for some reason it did not post.
>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>
>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>> sort in the future when these wear out. I will never upgrade to
>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>> split between city driving (10%), and off-roading (10%). My main goal
>>>>> is to get my Jeep to drive as close as possible to the way it did bone
>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>> excessive wear and tear on my clutch and engine parts. Someone please
>>>>> help! : D
>>>>>
>>>>> '06 TJ (4.0L with I-6)
>>>>> 6 speed manual
>>>>> Dana 30 front/35 rear
>>>>> current 3.07s
>>>>>
>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one (like
>>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>>> bit of snow from Dec. - Apr.
>>>>>
>>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
OK, so her tires are 27.6" instead of 29". The same formula still applies.
27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
were, and I quote "4.56 is as close as it gets to how it was stock". I
was wrong because I had the wrong original tire size. But even at that
my calculations are much closer than saying that 4.56 gears would be as
close to stock as her original setup.
Mike Romain wrote:
> She had 215's....
>
> You are wrong.
>
> Mike
>
> c wrote:
>> I'm not disputing that those gear ratios would work the best, but you
>> stated that they would be closest to stock, and that is simply not
>> true. It is a simple mathematical equation to calculate the proper
>> gear ratio, and nothing more.
>>
>> Chris
>>
>> Carl S wrote:
>>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is
>>> for 33's and 4.88 for 35's.
>>>
>>> Carl
>>>
>>>
>>> "c" <c@me.org> wrote in message
>>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and
>>>> her tires were 29". It's s simple ratio between the tire diameter
>>>> and gear ratio to maintain the same RPM. 29/3.07=9.45. If she
>>>> maintains that same ratio between tire diameter and gear ratio, her
>>>> RPM will remain the same. To calculate the gear ratio, she just
>>>> needs to divide the tire diameter by 9.45 to get the proper gear
>>>> ratio if she wants to achieve the same RPM as original.
>>>>
>>>> for 31s it would be 3.26
>>>> for 33s it would be 3.49
>>>>
>>>> Chris
>>>>
>>>> Carl S wrote:
>>>>> 4.56 is as close as it gets to how it was stock.
>>>>>
>>>>> Carl
>>>>>
>>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>>> I have posted this once today, but for some reason it did not post.
>>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>>
>>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>>> sort in the future when these wear out. I will never upgrade to
>>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>>> split between city driving (10%), and off-roading (10%). My main
>>>>>> goal
>>>>>> is to get my Jeep to drive as close as possible to the way it did
>>>>>> bone
>>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>>> excessive wear and tear on my clutch and engine parts. Someone
>>>>>> please
>>>>>> help! : D
>>>>>>
>>>>>> '06 TJ (4.0L with I-6)
>>>>>> 6 speed manual
>>>>>> Dana 30 front/35 rear
>>>>>> current 3.07s
>>>>>>
>>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one
>>>>>> (like
>>>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>>>> bit of snow from Dec. - Apr.
>>>>>>
>>>
OK, so her tires are 27.6" instead of 29". The same formula still applies.
27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
were, and I quote "4.56 is as close as it gets to how it was stock". I
was wrong because I had the wrong original tire size. But even at that
my calculations are much closer than saying that 4.56 gears would be as
close to stock as her original setup.
Mike Romain wrote:
> She had 215's....
>
> You are wrong.
>
> Mike
>
> c wrote:
>> I'm not disputing that those gear ratios would work the best, but you
>> stated that they would be closest to stock, and that is simply not
>> true. It is a simple mathematical equation to calculate the proper
>> gear ratio, and nothing more.
>>
>> Chris
>>
>> Carl S wrote:
>>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is
>>> for 33's and 4.88 for 35's.
>>>
>>> Carl
>>>
>>>
>>> "c" <c@me.org> wrote in message
>>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and
>>>> her tires were 29". It's s simple ratio between the tire diameter
>>>> and gear ratio to maintain the same RPM. 29/3.07=9.45. If she
>>>> maintains that same ratio between tire diameter and gear ratio, her
>>>> RPM will remain the same. To calculate the gear ratio, she just
>>>> needs to divide the tire diameter by 9.45 to get the proper gear
>>>> ratio if she wants to achieve the same RPM as original.
>>>>
>>>> for 31s it would be 3.26
>>>> for 33s it would be 3.49
>>>>
>>>> Chris
>>>>
>>>> Carl S wrote:
>>>>> 4.56 is as close as it gets to how it was stock.
>>>>>
>>>>> Carl
>>>>>
>>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>>> I have posted this once today, but for some reason it did not post.
>>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>>
>>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73 or
>>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>>> sort in the future when these wear out. I will never upgrade to
>>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>>> split between city driving (10%), and off-roading (10%). My main
>>>>>> goal
>>>>>> is to get my Jeep to drive as close as possible to the way it did
>>>>>> bone
>>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>>> excessive wear and tear on my clutch and engine parts. Someone
>>>>>> please
>>>>>> help! : D
>>>>>>
>>>>>> '06 TJ (4.0L with I-6)
>>>>>> 6 speed manual
>>>>>> Dana 30 front/35 rear
>>>>>> current 3.07s
>>>>>>
>>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one
>>>>>> (like
>>>>>> 44s)? I don't know if this makes any difference as far as which gear
>>>>>> ratio to go with, but where I live (upstate NY), there can be quite a
>>>>>> bit of snow from Dec. - Apr.
>>>>>>
>>>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
I should have been more specific. 4.56 gears turning 33" tires will restore
stock performance. The lil bit of extra gear makes up for extra wind
resistance, tire wieght, ect.
Carl
"c" <c@me.org> wrote in message
news:46f4725b$0$9561$4c368faf@roadrunner,com ...
> OK, so her tires are 27.6" instead of 29". The same formula still applies.
>
> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with 3.67
> gears. This is HARDLY the same as the 4.56 gears that Carl said were, and
> I quote "4.56 is as close as it gets to how it was stock". I was wrong
> because I had the wrong original tire size. But even at that my
> calculations are much closer than saying that 4.56 gears would be as close
> to stock as her original setup.
>
>
> Mike Romain wrote:
>> She had 215's....
>>
>> You are wrong.
>>
>> Mike
>>
>> c wrote:
>>> I'm not disputing that those gear ratios would work the best, but you
>>> stated that they would be closest to stock, and that is simply not true.
>>> It is a simple mathematical equation to calculate the proper gear ratio,
>>> and nothing more.
>>>
>>> Chris
>>>
>>> Carl S wrote:
>>>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for
>>>> 33's and 4.88 for 35's.
>>>>
>>>> Carl
>>>>
>>>>
>>>> "c" <c@me.org> wrote in message
>>>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>>>>> tires were 29". It's s simple ratio between the tire diameter and gear
>>>>> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that
>>>>> same ratio between tire diameter and gear ratio, her RPM will remain
>>>>> the same. To calculate the gear ratio, she just needs to divide the
>>>>> tire diameter by 9.45 to get the proper gear ratio if she wants to
>>>>> achieve the same RPM as original.
>>>>>
>>>>> for 31s it would be 3.26
>>>>> for 33s it would be 3.49
>>>>>
>>>>> Chris
>>>>>
>>>>> Carl S wrote:
>>>>>> 4.56 is as close as it gets to how it was stock.
>>>>>>
>>>>>> Carl
>>>>>>
>>>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>>>> I have posted this once today, but for some reason it did not post.
>>>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>>>
>>>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73
>>>>>>> or
>>>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>>>> sort in the future when these wear out. I will never upgrade to
>>>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>>>> split between city driving (10%), and off-roading (10%). My main
>>>>>>> goal
>>>>>>> is to get my Jeep to drive as close as possible to the way it did
>>>>>>> bone
>>>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>>>> excessive wear and tear on my clutch and engine parts. Someone
>>>>>>> please
>>>>>>> help! : D
>>>>>>>
>>>>>>> '06 TJ (4.0L with I-6)
>>>>>>> 6 speed manual
>>>>>>> Dana 30 front/35 rear
>>>>>>> current 3.07s
>>>>>>>
>>>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one
>>>>>>> (like
>>>>>>> 44s)? I don't know if this makes any difference as far as which
>>>>>>> gear
>>>>>>> ratio to go with, but where I live (upstate NY), there can be quite
>>>>>>> a
>>>>>>> bit of snow from Dec. - Apr.
>>>>>>>
>>>>
I should have been more specific. 4.56 gears turning 33" tires will restore
stock performance. The lil bit of extra gear makes up for extra wind
resistance, tire wieght, ect.
Carl
"c" <c@me.org> wrote in message
news:46f4725b$0$9561$4c368faf@roadrunner,com ...
> OK, so her tires are 27.6" instead of 29". The same formula still applies.
>
> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with 3.67
> gears. This is HARDLY the same as the 4.56 gears that Carl said were, and
> I quote "4.56 is as close as it gets to how it was stock". I was wrong
> because I had the wrong original tire size. But even at that my
> calculations are much closer than saying that 4.56 gears would be as close
> to stock as her original setup.
>
>
> Mike Romain wrote:
>> She had 215's....
>>
>> You are wrong.
>>
>> Mike
>>
>> c wrote:
>>> I'm not disputing that those gear ratios would work the best, but you
>>> stated that they would be closest to stock, and that is simply not true.
>>> It is a simple mathematical equation to calculate the proper gear ratio,
>>> and nothing more.
>>>
>>> Chris
>>>
>>> Carl S wrote:
>>>> Sorry, but it's widely held that 4.10 is correct for 31/32, 4.56 is for
>>>> 33's and 4.88 for 35's.
>>>>
>>>> Carl
>>>>
>>>>
>>>> "c" <c@me.org> wrote in message
>>>> news:46f41cce$0$11026$4c368faf@roadrunner,com ...
>>>>> Sorry, but that is incorrect. Her original gear ratio is 3.07 and her
>>>>> tires were 29". It's s simple ratio between the tire diameter and gear
>>>>> ratio to maintain the same RPM. 29/3.07=9.45. If she maintains that
>>>>> same ratio between tire diameter and gear ratio, her RPM will remain
>>>>> the same. To calculate the gear ratio, she just needs to divide the
>>>>> tire diameter by 9.45 to get the proper gear ratio if she wants to
>>>>> achieve the same RPM as original.
>>>>>
>>>>> for 31s it would be 3.26
>>>>> for 33s it would be 3.49
>>>>>
>>>>> Chris
>>>>>
>>>>> Carl S wrote:
>>>>>> 4.56 is as close as it gets to how it was stock.
>>>>>>
>>>>>> Carl
>>>>>>
>>>>>> "Tracie" <brainart@upstate.edu> wrote in message
>>>>>> news:1190386700.755334.108510@19g2000hsx.googlegroups,com ...
>>>>>>> I have posted this once today, but for some reason it did not post.
>>>>>>> If anyone finds it, sorry for the duplicate post.
>>>>>>>
>>>>>>> Anyhoo, I definitely want to re-gear but I am not sure if the 3.73
>>>>>>> or
>>>>>>> the 4.11 ratio would be better for me. I currently have 31" BFG All
>>>>>>> Terrain T/A KOs, but will definitely upgrade to a 33" tire of some
>>>>>>> sort in the future when these wear out. I will never upgrade to
>>>>>>> bigger than a 33" tire. As for off-roading, I do some light trail
>>>>>>> riding and the occasional hop in the mud puddle when I find one that
>>>>>>> looks fun. 80% of my driving is highway at approximately 70 miles
>>>>>>> round trip at a speed of anywhere from 60-70 mph. The other 20% is
>>>>>>> split between city driving (10%), and off-roading (10%). My main
>>>>>>> goal
>>>>>>> is to get my Jeep to drive as close as possible to the way it did
>>>>>>> bone
>>>>>>> stock (being able to use my 6th gear on the freeway) and to prevent
>>>>>>> excessive wear and tear on my clutch and engine parts. Someone
>>>>>>> please
>>>>>>> help! : D
>>>>>>>
>>>>>>> '06 TJ (4.0L with I-6)
>>>>>>> 6 speed manual
>>>>>>> Dana 30 front/35 rear
>>>>>>> current 3.07s
>>>>>>>
>>>>>>> P.S. Would I also need to upgrade my Dana 30/35 to a bigger one
>>>>>>> (like
>>>>>>> 44s)? I don't know if this makes any difference as far as which
>>>>>>> gear
>>>>>>> ratio to go with, but where I live (upstate NY), there can be quite
>>>>>>> a
>>>>>>> bit of snow from Dec. - Apr.
>>>>>>>
>>>>
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
c wrote:
> OK, so her tires are 27.6" instead of 29". The same formula still applies.
>
> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
> 3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
> were, and I quote "4.56 is as close as it gets to how it was stock". I
> was wrong because I had the wrong original tire size. But even at that
> my calculations are much closer than saying that 4.56 gears would be as
> close to stock as her original setup.
>
Only problem with your math is that your assumptions are off a little. The
tire circumference is accounted for but the mass distribution is off
significantly for power calculations - those 33's will take significantly
more power to accelerate (or to stop, for that matter - first hard stop
with stock brakes is a real eye-opener!) and they have way more exposed
surface area for drag. Both are significant when addressing highway
performance. A simple multiple will NOT restore the feel.
--
Will Honea
--
Posted via a free Usenet account from http :// www .teranews,com
c wrote:
> OK, so her tires are 27.6" instead of 29". The same formula still applies.
>
> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
> 3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
> were, and I quote "4.56 is as close as it gets to how it was stock". I
> was wrong because I had the wrong original tire size. But even at that
> my calculations are much closer than saying that 4.56 gears would be as
> close to stock as her original setup.
>
Only problem with your math is that your assumptions are off a little. The
tire circumference is accounted for but the mass distribution is off
significantly for power calculations - those 33's will take significantly
more power to accelerate (or to stop, for that matter - first hard stop
with stock brakes is a real eye-opener!) and they have way more exposed
surface area for drag. Both are significant when addressing highway
performance. A simple multiple will NOT restore the feel.
--
Will Honea
--
Posted via a free Usenet account from http :// www .teranews,com
Re: REGEARING FROM 3.07 TO EITHER 3.73 OR 4.11
To restore stock 'feel':
31" tires = 4.10 gears
32/33" tires = 4.56 gears
35" tires = 4.88 gears
Carl
"Will Honea" <whonea@yahoo,com > wrote in message
news:46f4786d$0$26389$88260bb3@free.teranews,com ...
>c wrote:
>
>> OK, so her tires are 27.6" instead of 29". The same formula still
>> applies.
>>
>> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
>> 3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
>> were, and I quote "4.56 is as close as it gets to how it was stock". I
>> was wrong because I had the wrong original tire size. But even at that
>> my calculations are much closer than saying that 4.56 gears would be as
>> close to stock as her original setup.
>>
>
> Only problem with your math is that your assumptions are off a little.
> The
> tire circumference is accounted for but the mass distribution is off
> significantly for power calculations - those 33's will take significantly
> more power to accelerate (or to stop, for that matter - first hard stop
> with stock brakes is a real eye-opener!) and they have way more exposed
> surface area for drag. Both are significant when addressing highway
> performance. A simple multiple will NOT restore the feel.
>
> --
> Will Honea
>
> --
> Posted via a free Usenet account from http :// www .teranews,com
>
To restore stock 'feel':
31" tires = 4.10 gears
32/33" tires = 4.56 gears
35" tires = 4.88 gears
Carl
"Will Honea" <whonea@yahoo,com > wrote in message
news:46f4786d$0$26389$88260bb3@free.teranews,com ...
>c wrote:
>
>> OK, so her tires are 27.6" instead of 29". The same formula still
>> applies.
>>
>> 27.6" tires with 3.07 gears will turn the same RPM as 33" tires with
>> 3.67 gears. This is HARDLY the same as the 4.56 gears that Carl said
>> were, and I quote "4.56 is as close as it gets to how it was stock". I
>> was wrong because I had the wrong original tire size. But even at that
>> my calculations are much closer than saying that 4.56 gears would be as
>> close to stock as her original setup.
>>
>
> Only problem with your math is that your assumptions are off a little.
> The
> tire circumference is accounted for but the mass distribution is off
> significantly for power calculations - those 33's will take significantly
> more power to accelerate (or to stop, for that matter - first hard stop
> with stock brakes is a real eye-opener!) and they have way more exposed
> surface area for drag. Both are significant when addressing highway
> performance. A simple multiple will NOT restore the feel.
>
> --
> Will Honea
>
> --
> Posted via a free Usenet account from http :// www .teranews,com
>
