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Old 01-24-2010, 03:45 PM   #2
Bill UK
AEM EMS
 
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Join Date: Jul 2006
Location: UK
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If your replacing a the crank pulley with a cheap ally one, you run the risk of damaging your engine. The heavy stock pulley is there for a reason, the weight of the pulley absorbs vibration from the crank. Links crankshaft torsional vibration. and resonance. If something rattles/vibrates place a heavy weight on the end of it.
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