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Scored Flywheel

Scored Flywheel The discolored areas on this flywheel were caused by excessive heat. The flywheel must be ground to remove these hardened crystalized areas. They will cause clutch chatter and grabbing if they are not removed. DO NOT try to resurface a flywheel on a lathe. A lathe tool will jump over the hard spots while it cuts into the softer cast iron surrounding the spots. The flywheel must be referenced off the crankshaft mounting surface in order to cut any runnout off the face. This cannot be done on a lathe. A flywheel surface grinder is the best machine to use for this purpose.

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