Harmonic Balancer/Dampner Discussion [Archive] - Toyota MR2 Message Board

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This has been discussed a few times with some people saying that pulleys need to be dampened or harmonic balanced and others say its not going to rip the motor apart or do anything negative to the motor. From my experience at an engine machine shop that Ive been working at for over a year, Ive found that harmonics can be harder on bearings if not treated. I have no specific findings with mr2