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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Decided to fit a M3 diff



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      09-19-2013, 01:54 PM   #309
Malexander
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I have the M3 rear on my FBO 135i and I am also 6AT. Going taller than stock sounds silly to me. I have the 3.85 of the manual M3 and it is perfect.
Hi!

Just wanted to ask you about your rear diff. Did you use the m3 diff with sideshaft?

Did you only change the cv joint to m3 or did you used the whole shaft?
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      09-20-2013, 06:34 AM   #310
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I am sorry for the topic hijack but i dont know where else to ask it.

I can buy a ''complete'' M3 DKG rear (about 60k) for a very good price. You can see the picture in my attachement.

Can someone take a look at it and tell me what other parts i will need to make the swap complete?

Thanks.
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      09-20-2013, 06:47 AM   #311
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I am sorry for the topic hijack but i dont know where else to ask it.

I can buy a ''complete'' M3 DKG rear (about 60k) for a very good price. You can see the picture in my attachement.

Can someone take a look at it and tell me what other parts i will need to make the swap complete?

Thanks.
Take everything if you can, subframe with bushings and rods nice suspension upgrade. But for diff you need sideshafts, diff, and prop shaft which is not on the picture. Prop shaft has to be shortened and welded with your current prop shaft and balanced.
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      09-20-2013, 06:54 AM   #312
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So i would only need to buy a prop shaft, correct?
I can buy the whole thing for about 600 dollar.
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      09-20-2013, 07:02 AM   #313
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I suggest you to read the whole thread to get an idea to what you are doing. The price is very good for all those parts which you are getting.

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So i would only need to buy a prop shaft, correct?
I can buy the whole thing for about 600 dollar.
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      02-21-2014, 10:57 AM   #314
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what would this m3 diff conversion cost with used parts? and labour costs?
what is a good price for the parts?
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      02-21-2014, 08:14 PM   #315
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what would this m3 diff conversion cost with used parts? and labour costs?
what is a good price for the parts?
$2000 in parts plus whatever local labor rate is...
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      02-21-2014, 08:20 PM   #316
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+ the cost of rebuilding the M3 diff since the M owners are having to do rebuilds at 60-80 thousand miles. Just buy a quaife, wavetrack or OS giken
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      02-22-2014, 12:03 PM   #317
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Rear axle complete 800
But that's where the conversion can lead you down a rabbit hole

I replaced brakes suspension brake lines and the bill depends on you taste

Labour for me was 800 but I lent a hand
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