Re: Are they nuts?"TOG@Toil" <totallydeadmailbox@yahoo.co.uk> writes:
> On 13 Mar, 12:29, "Blattus Slafaly £ ¥ 0/00 :)"
> <boobooililili...@roadrunner . com > wrote:
>> I can't find an auto tech newsgroup. VW wants $800 to change a $36
>> timing belt on the 1.9 Turbodiesel. Are they nuts? I guess i'll be doing
>> that myself. Pushing 100k miles prolly should be changed. But a belt for
>> timing? Why not a chain?
Noise emissions, for starters. Chains do make noise, and with ever
tightening noise emissions, a cambelt is an easy way to remove some
mechanical noise. Not to mention that you can use them for other things
as well like driving the waterpump etc.
>> Seems like the weak link in this engine that
>> would have no problem going 300k miles. Have to tear it apart for a
>> stinking belt.
You don't have to "tear it apart", you have to remove the cover over the
belt and more or less stuff that's in the way of getting it out.
Oh, and while you're in there, I'd consider replacing the tensioner
wheels and similar items.
>> It IS an interference engine so when the belt breaks the
>> pistons crush all the open valves.
>
>
> Most cars seem to use belts rather than chains. Quieter and cheaper.
> Some are easier to change than others - on some Fiats and Alfa Romeos,
> I think you have to remove the engine to change the belt, which is
> daft.
On some the workshop manual suggests that because of space issues. Most
engine bays these days are so cramped that you've got to do weird and
wonderful things just to access basic components (on some transverse
sixes, you have to remove parts of the manifold to get at the read spark
plugs). This is often because engine bays seem to get smaller in
relation to engine size, plus all the anciliaries that you need these
days for 'creature comforts'.
> My Nissan uses a chain. So did my Saab. I don't know which other makes
> do.
Some BMWs (but not all), a lot of Mercedes engines, most of the US V8
engines...
> A mate has just had an incorrectly fitted (12,000 miles ago) belt snap
> on his Renault Megane Scenic. He is Not Happy. I don't think there's a
> problem with belts, generally, as long as they're changed religiously.
That sounds more a problem with Thick Fit type mechanics than belts -
problems with belts are usually because someone forgot to change it or
fucked up the change.
And it's not exactly unknown for chains to wear and/or snap either.
> As for bikes, quite a few use belt drive for the cams.
>
> X-posted to ukrm, where there are several car nuts.
*waves*
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