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guccimanescarwash

Valve shim help

4 posts in this topic

Either the valve bucket to cam lobe clearance it too tight, or there is an issue with the cam or the bore where the cam rides on

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Be sure that the cam caps are seated by hand all the way down; never pull them down with the bolts.  Be certain to tighten them in 3 or so steps, in the sequence shown in the manual, and not one tick tighter than spec.  In fact, tighten them to 75 inch pounds instead of 86.

 

Check clearances with plasti-gage as shown in the manual.  Not too unusual for the intake cam to feel a bit tight in a cold head.

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