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What I usually do is to put the car in top gear and roll it, watching the
valve close and after it closes, roll it a bit further.
Every time I set a valve I mark it with chalk so I know where I stand.
Since the lift at the valve is about 0.375 and the clearance is 0.020,
a very small amount of lift will really screw up your clearance.
I'd turn the crank more than 2-3° to make sure the valve is closed because
there is a bit of a ramp that may last longer than that. You want to be
on the sure-'nuff HEEL of the cam, not anywhere near the lobe.
--
George Downs, The "original" Walrus3, Bartlesville, Oklahoma
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