Re: Back To The Teens
"John Grossbohlin" <nospam@nospam.earthlink,net > wrote in message
news:13lio60q1fe9gaa@corp.supernews,com ...
>
> "Oppie" <boppie@nospam,com > wrote in message
> news:eGc6j.1$ki7.0@trndny06...
>> Block heater...
>> You used to be able to get either an electic heater that replaced the
>> dipstick or a cartridge heater that was spliced into one of the coolant
>> lines. Whitney carried them.
>
> Used to have them that replaced a freeze-out plug too...
>
Little known fact - the freeze out plugs are actually there as a means to
externally hold the sand casting forms which make the internal cooling
passage spaces when the block is cast. Once solidified, the sand/wax is
removed by steam cleaning, the access hole is machined (along with the
machining and boring of the entire block) and the freeze out plug installed.
Saturn had a process called the 'lost foam' (similar to 'lost wax' casting
process) that I didn't entirely understand. Lost foam was supposed to be an
alternate to sand casting that the rest of the industry uses.