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Forced Induction Forum Sponsored by Active Autowerke
Discuss supercharging, turbocharging and even nitrous and water injection here.
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Old 04-19-2012, 10:50 PM   #1
Bdave
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My Ride: M3 HPF Stage 3
Let's talk differential mounts and braces

ixixix has mentioned a custom fabricated DUAL mount conversion from the wimpy single mount that plagues the M3 e46 diff. Very cool.

I have seen billet plates/covers too for the two rear mounts. What IS the ultimate fix to keep the differential from being violently "thrown through the trunk" as where it would like to go?

My shops little patch is a larger M5 bolt and converting to all solid mounts. I like the DUAL front mount conversion idea much better. How is this done?

Photos?

ixixix mentioned additional bracing too. Good idea.
Who has other ideas or fabrications that you might want to share?

What is HPF doing about this on their shop cars??

Lets face it. This is a super defect IMO, that BMW did. I was able to break my stock fwd mount twice on 300rwhp.
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Old 04-19-2012, 10:57 PM   #2
SlideFox
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This should probably end up in the suspension section.
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Old 04-19-2012, 11:06 PM   #3
Bdave
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maybe, but its really aimed at us FI guys. You could say the coil thread should not hav been in FI. I think its FI and only FI that has necessitaed such radical fabrications and alterations to the diff.

I was trying to unclutter Marcus's thread and make it open to more inputs. We were just getting started over there. xixixi was naming but not describing in detail a VERY interesting dual mount system that really would have the most interest to guys with Force Induction motors.

Besides, everyone should know by now, that if you need cutting edge to come to the FI section. At least cutting edge for going fast and breaking as little as possible.

The mods may move this thread, but I would be surprised if they did.
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