> The different metal parts expand and contract at different rates. Since
> you
> opperate the engine hot, that is where the clearances need to be the most
> accurate. Try this test: Adjust all the valve lashes when cold to the
> same
> spec, heat the engine up, and recheck. They will all be different. That
> is
> why they are adjusted when hot.
OTOH, it is also nice to have the cold specs, cuz ye shouldna start that
engine the first time without having them somewhere close to right.
David L
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