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Can anyone give me some insight on this . I am rebuilding my son's motor due to a bad piston. I thought while I have it apart and have to buy new pistons, gasket kit and other parts I would see if I could bore it a little bit bigger. How big can I go 500, 600? and should I change the heads? This is kind of a father and son project so any info would be greatly appreciated. Please help!
Thanks,
Mark
Thanks,
Mark