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Old 08-31-2012, 08:03 PM   #1
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Join Date: Oct 2010
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Posts: 302
My Ride: 00 323ci
Rear end torque, thump.

My issue has been persistent since I bought the car, diff bushings changed , subframe reinforced.

If I don't do a smooth clutch release or clutch depress , I will get a thump,thud.

I have taken videos while releasing the clutch and thumping the diff, each video was taken on separate mounting points and overall diff views

An odd point to add - the thump isn't apparent underneath the vehicle in the back . It's loud and distinct while sitting in the cabin , but theres no such noise underneath, only the click off the half shafts.
There is complete movement happening on my whole rear end. Exhaust , shocks and springs will compress a good inch , but there differential is solid in place.
This problem has just been such a nuisance

Maybe it's spring shock related? What about tranny mounts?

Last edited by bmwci323; 08-31-2012 at 08:05 PM.
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