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UnderDrive Pully Harmonic balance,

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Old 07-27-2007, 08:16 AM
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UnderDrive Pully Harmonic balance,
will the UR racing pulleys shorten the life of the motor or do they harmonlically balance on ther own? the stock Pulley is def. MUCH heavier and bigger.... wont you think the less weight on the engine turning it will mess up the balance ?

regulars chime in?

tl;dr will puting in a Underdrive crank pulley shorten the life of you motor significantly
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Old 07-27-2007, 08:43 AM
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ugh
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Old 07-27-2007, 09:16 AM
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I've read no. This engine does not use a harmonic balancer to start with so there are no ill effects.
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Old 07-27-2007, 09:39 AM
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No. the J series doesnt use a harmonic balancer. Replacing the stock crank with teh UR wont hurt it
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Old 07-27-2007, 09:41 AM
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This has been discussed in a lot of threads but in short, no.
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Old 07-27-2007, 09:54 AM
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ok thanks guys thats all i needed to know!

u can close this thread now.
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