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Old 09-15-2012, 10:42 AM   #3
Pyrotechnic
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Join Date: Feb 2007
Location: Austin, TX
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Re: Cummins swap excessive frame twist in neutral

An I6 is a decently balanced motor, are you sure there isn't something about the way the motor is running that's causing it to shake? What did you end up doing for the motor mounts?

Now the 4BT, or any I4 without balance shafts for that matter is a different story.
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