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      08-05-2012, 07:34 PM   #2
radiantm3
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Drives: 2007 Honda S2000
Join Date: Sep 2008
Location: Danville, CA

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2011 E92 M3  [4.66]
2014 BMW i3  [5.00]
That's what mine sounded like when my bearings were going bad, but never at idle. I had to rev is a couple hundred rpm's and then you'd hear that exact sound if the engine was fully warmed up.
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2011 E92 M3(Sold). 2007 Honda S2000 (Track Car). Cayman GT4 (Daily + Track Car)