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Old 05-12-2026, 09:14 AM   #9
Kurt in NJ
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Join Date: May 2010
Location: on the Littlefield
Posts: 6,675
Default Re: Does flywheel need to be balanced

Through the years many crankshafts have been ground a little off center ( possibly even a lot) a flywheel balanced separately is centered by the pilot bearing hole.
If the pilot bearing hole has runout when mounted on the crankshaft it will not be balanced correctly to the crankshaft if it was balanced to the center of the pilot bearing.
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