Thread: Piston size
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Old 07-03-2020, 02:52 AM   #3
dave in australia
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Join Date: May 2010
Location: Victoria, Australia
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Default Re: Piston size

It could also be 040, which would indicate .040" oversize. Plenty of engines I've pulled apart have had piston sizes stamped in the top. STD, 020, 040, 060 etc.
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