Will a used Quaife LSD from a 2007 E92 fit in my 2009 E93 with DCT?

mmmmQuattro · 07-31-2010, 08:35 AM

Just wondering if this would fit in my car.
Is there a difference in the ratio between an automatic and a DCT gearbox?
I like the idea of getting the complete unit, as it seems an easier way to change over to LSD.

marcel b · 07-31-2010, 09:03 AM

you have a different final drive, so swapping will not work.

mmmmQuattro · 08-01-2010, 04:59 AM

Quote:

Originally Posted by marcel b

you have a different final drive, so swapping will not work.

Thanks Marcel.
Having done some more research, I have discovered that my final drive ratio is 2.56, which by standard manual transmissions is very low. (I used to run 4.11 in another car).
The AT 335 has a ratio of 3.46 (is that correct?)
As I have 7 speeds and most of the roads around where I live, I can't legally go above 110km, would this diff swap provide me with a very fast 0-100km acceleration (assuming that I could get traction)?

It might be a lot of fun...

David1 · 08-02-2010, 09:40 AM

You would have the possible issue of the DCT not shifting correctly. Also, 1st gears would be almost useless.

07-31-2010, 08:35 AM	#1
mmmmQuattro Major 259 Rep 1,165 Posts Drives: f83 / E93 335 / E70 X5 40d Join Date: Sep 2007 Location: Adelaide, South Australia iTrader: (0) Garage List 2007 320 E91 M-Spor ... [0.00] 2009 335-E93 M-Sport [0.00]	Will a used Quaife LSD from a 2007 E92 fit in my 2009 E93 with DCT? Just wondering if this would fit in my car. Is there a difference in the ratio between an automatic and a DCT gearbox? I like the idea of getting the complete unit, as it seems an easier way to change over to LSD.
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07-31-2010, 09:03 AM	#2
marcel b Lieutenant Colonel 132 Rep 1,898 Posts Drives: F31 340i Join Date: Jun 2009 Location: Europe iTrader: (0)	you have a different final drive, so swapping will not work.
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08-02-2010, 09:40 AM	#4
David1 Brigadier General 816 Rep 3,959 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	You would have the possible issue of the DCT not shifting correctly. Also, 1st gears would be almost useless. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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