M3 Diff v. Stock Diff with LSD - BMW 3-Series (E90 E92) Forum

SeattleE90 · 03-27-2010, 10:49 PM

Let discuss which is better and why?

M3 DCT 3.15 Ratio v. The Stock MT 3.08

I have a bolted Diff.

Price for Installed LSD about $2200

M3 LSD - Used $1200 Diff $700 Rear Axles $600 Driveline?

Is it worth it?

Joe

cstavaru · 03-28-2010, 03:30 AM

Quote:

Originally Posted by SeattleE90

Let discuss which is better and why?

M3 DCT 3.15 Ratio v. The Stock MT 3.08

I have a bolted Diff.

Price for Installed LSD about $2200

M3 LSD - Used $1200 Diff $700 Rear Axles $600 Driveline?

Is it worth it?

Joe

The M3 diff would definitely be better track-wise, but would necessitate maintenance.

But fitting and M3 diff requires modified drive shaft as far as I read, because the M3 one does not fit and the 335i does not fit either...are you prepared to do this ?

Funkmob · 03-28-2010, 04:58 AM

This might be interesting for you:

http://www.motorsport24.de/de/BMW-Differential-Tuning

marconi118 · 03-28-2010, 10:50 AM

I am triyng to do this:
complete E92 M3 DCT 3.15 rear subframe + LSD + driveshaft (from 3MT) on my E93 6MT 335i

It needs a kind of adapter 30mm thick to adapt the gearbox output to the M3 driveshaft.....

Will post infos and pictures when done... in several weeks

SeattleE90 · 03-28-2010, 11:27 AM

yes i'm prepared to shorten or legthen the driveshaft if needed. Just deciding if it's worth it or not.

marcel b · 03-28-2010, 02:42 PM

big question is what you want from your car. daily drive? tracking? for tracking a Drexler or comparable lsd is better then a M lsd. BMW is using them themselves in e.g. the wtcc for a reason....
I find it a very big modification you're planning. respect.

marconi118 · 03-28-2010, 05:03 PM

Quote:

Originally Posted by SeattleE90

yes i'm prepared to shorten or legthen the driveshaft if needed. Just deciding if it's worth it or not.

the OEM M3 6MT drive shaft is 30mm shorter than the one of 335i 6MT

So it is easy to fit, it then requires a 30mm plate to close the "gap" between the shaft and the gearbox
this round plate will have to adapt the circle of the screws, the M3 is 105mm the 335i is 95mm ... see on realoem

cstavaru · 03-29-2010, 02:09 AM

Quote:

Originally Posted by marconi118

the OEM M3 6MT drive shaft is 30mm shorter than the one of 335i 6MT

So it is easy to fit, it then requires a 30mm plate to close the "gap" between the shaft and the gearbox
this round plate will have to adapt the circle of the screws, the M3 is 105mm the 335i is 95mm ... see on realoem

I wonder if any tuning company is interested in manufacturing such an item...I think they could make some nice $200 per piece...

03-27-2010, 10:49 PM	#1
SeattleE90 Private Drives: 2003.5 LSB M3/2007 335I Sedan Join Date: Jan 2006 Location: Seattle, Washington Posts: 96 iTrader: (4)	M3 Diff v. Stock Diff with LSD Let discuss which is better and why? M3 DCT 3.15 Ratio v. The Stock MT 3.08 I have a bolted Diff. Price for Installed LSD about $2200 M3 LSD - Used $1200 Diff $700 Rear Axles $600 Driveline? Is it worth it? Joe __________________ 2007 TiAg/Black 6SP/Premium/Cold Weather/Sport/Oil Cooler/Stock For Now;-)
	Tweet

03-28-2010, 11:27 AM	#5
SeattleE90 Private Drives: 2003.5 LSB M3/2007 335I Sedan Join Date: Jan 2006 Location: Seattle, Washington Posts: 96 iTrader: (4)	yes i'm prepared to shorten or legthen the driveshaft if needed. Just deciding if it's worth it or not. __________________ 2007 TiAg/Black 6SP/Premium/Cold Weather/Sport/Oil Cooler/Stock For Now;-)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

03-28-2010, 04:58 AM	#3
Funkmob First Lieutenant Drives: 335i E92 space grey Join Date: Oct 2009 Location: Belgium Posts: 311 iTrader: (0)	This might be interesting for you: http://www.motorsport24.de/de/BMW-Differential-Tuning

03-28-2010, 10:50 AM	#4
marconi118 Captain Drives: 06/07 e93 335i Join Date: Nov 2008 Location: europe Posts: 903 iTrader: (0)	I am triyng to do this: complete E92 M3 DCT 3.15 rear subframe + LSD + driveshaft (from 3MT) on my E93 6MT 335i It needs a kind of adapter 30mm thick to adapt the gearbox output to the M3 driveshaft..... Will post infos and pictures when done... in several weeks

03-28-2010, 02:42 PM	#6
marcel b Lieutenant Colonel Drives: 1M Coupe Join Date: Jun 2009 Location: Europe Posts: 1,867 iTrader: (0)	big question is what you want from your car. daily drive? tracking? for tracking a Drexler or comparable lsd is better then a M lsd. BMW is using them themselves in e.g. the wtcc for a reason.... I find it a very big modification you're planning. respect.