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Jim Brierley · 08-10-2021, 11:28 AM

Minimum piston-to-wall clearance should be .003" with modern piston and the way we drive. For stock engines I bore to .003" then hone another .0005". On performance engines I allow more clearance.

08-10-2021, 11:28 AM	#8
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,089	Re: Engine overhaul options/decision Minimum piston-to-wall clearance should be .003" with modern piston and the way we drive. For stock engines I bore to .003" then hone another .0005". On performance engines I allow more clearance.