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      08-13-2012, 04:15 PM   #81
Malek@MRF
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Quote:
Originally Posted by tibra1 View Post
Your posts are rife with misinformation and takes away focus from the real issue. The bolts are not at fault here, rather the rubber mounts that house the bolts which flex. Several performance shops have already developed solid or delrin cased mounts which unitize the diff to the sub-frame and eliminate the flex caused by the diff during hard driving.

So you argue the bolts are at fault? Yet these shops who have spent the time and effort to CNC the uprated diff mounts have not also machined new bolts to go along with their mounts????????? you would think machining bolts that are partially threaded wouldnít be too complicated for them to do right? Yet they havenít. :

The reason they have not and no one else has is there is no need for using partially threaded bolts if you unitize the diff to the rear sub-frame with solid or stiffer mounts than OEM. So fortunately we donít have to wait for someone to machine these in their garage b/c the use of these bolts is moot if you use the solid mounts. Again as with all suspension stiffness uprating there will be some measure of NVH increase.
This post has a lot of misinformation in it, and spreading of such is not in the best interest of this community.

The bolts are a major problem, as are the bushings and mounts.

The differential sustains damage AFTER the mounting hardware fails, this is why the low hanging heat sink gets damaged.

If you take apart an E9x M3 that has had this failure, it becomes painfully obvious what is going on.

Carry on gentlemen.
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