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Yoyodyne · 08-08-2018, 08:11 PM

Has anyone here ever set the clearance close enough that they hit the heads? .045 seems real conservative on a low rpm engine with a close piston to wall clearance that keeps the pistons from rocking. I've seen .030 and less on OHV engines, and it seems that less is better, right?

08-08-2018, 08:11 PM	#21
Yoyodyne Senior Member Join Date: Nov 2010 Location: Lancaster PA Posts: 535	Re: Piston to head clearancing Has anyone here ever set the clearance close enough that they hit the heads? .045 seems real conservative on a low rpm engine with a close piston to wall clearance that keeps the pistons from rocking. I've seen .030 and less on OHV engines, and it seems that less is better, right?