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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Fitting a M3 LSD into a E92 335D



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      03-09-2013, 02:26 PM   #1
mob17
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Fitting a M3 LSD into a E92 335D

I have been thinking about an LSD for a while now. First choice was to get the Quaife but due to the 335D engineering (somethings welded) this would cost over £2k fitted even when handing back the old LSD.

So recently i was thinking that why not use the M3 LSD instead? I was already planning to change some of the 335D's suspension bits to M3 ones (have read Alpina_b3_lux having some good results doing this).

I know it won't be a straight swap, so could someone please provide me with all the parts needed? Also, does the M3 LSD have any in-cabin electronic adjustments? If so would that need to be incorporated?

Many thanks.
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      03-09-2013, 05:24 PM   #2
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You can't do it because of the wrong ratio in the diff itself. And I'm sure something else physically is not bolt on.
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      03-09-2013, 11:21 PM   #3
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The m3 LSD doesn't have any external adjustment capability. As dM mentioned you may have trouble with the gear ratio unless you re-gear as it is not ideal for our power band. Driveshaft would likely have to be custom as I believe the two cars use different sizes. Track may be slightly different.
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      03-15-2013, 03:27 PM   #4
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Quote:
Originally Posted by FormerRotor View Post
The m3 LSD doesn't have any external adjustment capability. As dM mentioned you may have trouble with the gear ratio unless you re-gear as it is not ideal for our power band. Driveshaft would likely have to be custom as I believe the two cars use different sizes. Track may be slightly different.
Cheers. I guess the quaife is the better option then?
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      03-16-2013, 08:06 AM   #5
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      03-16-2013, 04:48 PM   #6
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      03-16-2013, 04:53 PM   #7
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Yep. With mob17 being in the UK, this is his best route.
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      03-17-2013, 12:30 PM   #8
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Cheers guys. I guess fitting an M3 one would take too much work and would cost the same as the Quaiffe fitted. But what i don't like with the Quaiffe is that you pay £2k and give back your diff, then get a final drive unit that's not brand new. But i suppose its covered by their warranty so should be ok.
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