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Re: Help! Snapping Rear Carrier bolts!! 99m3 extra (archive)

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Posted by kj on January 29, 2001 at 22:40:59:

In Reply to: Help! Snapping Rear Carrier bolts!! 99m3 extras posted by M3Kmprsr on January 29, 2001 at 22:09:08:

i had this happen several times on my 99m3 and got so bad had to replace the diff under warranty after about six times of the bolt loosening up. Finally i took it to a different dealer and they found out the control arm was bent and that was causing the bolts to loosen up. Needless to say it hasn't done it since and it has been about 6 months now.

I was hoping someone could help me out. I have a 99 m3 with a 10 psi supercharger, 30 lb injectors, split second fuel computer, flywheel, exhaust, and nitto drags etc.
Ok the problem I am having is with the rear carrier bolt. There is one main carrier bolt that holds the botton front of the diff to the carrier brace. After the first time I did the work on the car, I would snap one every 2 months or so. There not that bad at 1.97 a piece but the dealer sure wonders why I buy so many each time.
Well, Now I can go through them in less than a day. I cannot figure out why these are breaking soooo fast.
Now, I am no expert but I did design the supercharger for the car and installed everything on my own. (for those who want to see the installation do a search for my name and 12.86 . Thats what the car ran when I posted photos of it. Either way, I know a bit about mechanics and I've looked for EVERYTHING possible that could be causing this and nothing!!!
I am hoping someone might of had this problem and found a solution. I do not think changing back to regular tires is going to help because I am breaking them without even bringing the boost up.

Please help and thanks in advance.

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