re: valve timing

[Joe Elliott <jee@domain.elided>]

At 1:32 AM -0500 12/25/1, alfa-digest wrote:
>Valve timing should not affect clearance between valveheads and pistons at
>TDC. Valve lift definitely makes a difference. The two should not be confused.

Sure the timing could make a difference.  That's why if a timing belt 
breaks (think of it as retarding the timing by a few hundred degrees) 
the piston/valve clearance is reduced to zero.  For example, as the 
piston approaches TDC on the exhaust stroke, the exhaust valve begins 
to close to get out of the piston's way--retard that cam a little too 
much and you've got trouble.

Happy Holidays,
Joe Elliott

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