[DeTomaso] Timing Problem

[JDeRyke at aol.com]

In a message dated 3/2/08 8:03:06 AM, peter-kovacs at sbcglobal.net writes:

> Changing timing via the distributor position or firing order should not 
> change piston to valve clearance. That is a mechanical limitation determined by 
> the cam, lifters, pushrods, rockers and valves which would be unaffected by 
> ignition timing. Changing the valve timing by jumping a tooth on the timing 
> chain could have that effect. What am I missing here?
> 
You're   right, Peter- Art mentioned in his 1st post that he thought his 
problem might have resulted from some change in timing such as 'jumping a tooth'. 
While this is usually not possible with gear-drive cam setups unless a woodruf 
key or dowel shears, and should not be possible with an almost-new engine 
such as he has (dunno if he has a chain or a gear drive cam), if it somehow 
happens, it changes the relationship between cam & crank, which is what I was 
addressing in #2.   Just twisting the distributor won't cause imechanical 
nterference, as you said. Cheers- J DeRyke


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