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Old 08-30-2017, 12:01 AM   #15
Smallblock454
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Join Date: Jun 2014
Location: LB, Germany
Posts: 1,453
One thought: if not still done, check the pulley tensioner. If you have wobbling in the system these tends to get fatigue very fast.

A bent main pulley may affect the harmonic balancing. But a worn dual mass flywheel is much worse to the system.

Regards, Markus
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