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Old 01-22-2013, 06:17 PM   #6
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Join Date: Aug 2005
Location: Nashville, Tn
Posts: 277
My Ride: 2004 M3 Convertible
Hate to say it but that sounds remarkably like a big end bearing. Too deep a sound to be a lifter and appears louder at the bottom of the block? Sounds like one or more may have wiped. Think I'm on board with Mango.

Barneyhyphen is offline   Reply With Quote