Broken Diff Cover Mount

tdott · 04-26-2022, 08:49 AM

How common is this issue?

Haven't heard many stories about it, but recently two guys I know had it happen, both are manual transmission. Both times happened during a clutch dump/burnout.

Hit the poll if you had this happen to you.

amrazM · 04-26-2022, 09:39 AM

This has happened to a couple of people that I know, usually after the bolt snaps and they replace just the bolt this is usually the next failure to occur.

Diff bushings were original on your car? Usually happens during a hard launch, the load applied on the driveline causes the nose of the diff to move upwards and if the bolt doesnt break the housing will break.

View Poll Results: Yes, this happened to me and my car is:
DCT	0	0%
6MT	1	33.33%
Has not yet happened.	2	66.67%
Voters: 3. You may not vote on this poll

04-26-2022, 08:49 AM	#1
tdott S.FL S65 Specialist 4545 Rep 4,341 Posts Drives: M3 Join Date: Nov 2010 Location: South FL / 6ix iTrader: (4)	Broken Diff Cover Mount How common is this issue? Haven't heard many stories about it, but recently two guys I know had it happen, both are manual transmission. Both times happened during a clutch dump/burnout. Hit the poll if you had this happen to you. __________________ N/A S65 Headers Before/After Dyno Results tdott's Spec E9X Build Thread https://www.youtube.com/@tdottme
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04-26-2022, 09:39 AM	#2
amrazM mTekMods 2478 Rep 3,150 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	This has happened to a couple of people that I know, usually after the bolt snaps and they replace just the bolt this is usually the next failure to occur. Diff bushings were original on your car? Usually happens during a hard launch, the load applied on the driveline causes the nose of the diff to move upwards and if the bolt doesnt break the housing will break. __________________ E90M3 - Satin Black F97 X3M - Brooklyn Grey E39 M5 - Silverstone
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