Anyone with upgraded LSD? (3.91 or 4.10)?

pkumarm3 · 17-01-2009, 10:58 PM

hey guys

was curious if any CSL owners have upgraded their LSD from the stock configuration to BMW motorsport 3.91 or 4.10.

anyone?

edit: Final Drive Ratio NOT LSD

NZ_M3 · 18-01-2009, 04:03 AM

You are talking about the final drive ratio not the LSD - that the lock diff.

The final drive is a torque multiplier and running a shorter final drive means faster acceleration at the trade off of top speed.

bryce · 18-01-2009, 11:56 AM

Not aware of any CSLs on UK forums that have done this modification.

There's one man thats just done it to his M3 though and loves it. 4.10 I think.

_Nathan_ · 18-01-2009, 12:22 PM

Woppum has it on his CSL, TonyR did it many years ago on both of his.

I've got a Drexler plated LSD with 4.1 final drive that will be going in soon.

bryce · 18-01-2009, 12:39 PM

Oh aye, forgot Woppum was getting it done over the festive. Not been on Mtorque in an age.

englebert · 18-01-2009, 05:28 PM

Someone else got it done, which is why he did it (albeit on a normal M3).

Sounds good... but find the car quick enough as it is!

Bealo · 21-01-2009, 02:20 PM

Im going to do this ASAP i'm back to the States soon so i will hand carry a set from Turner motorsport back

I will let you know how i get on with the car once fitted.

hoshy · 03-04-2012, 05:12 PM

Did you get it fitted?

How did you find it?

I'm getting one next weekend so interested to know how it goes.

**shimmy** · 03-04-2012, 07:29 PM

Quote:

Originally Posted by hoshy

Did you get it fitted?

How did you find it?

I'm getting one next weekend so interested to know how it goes.

Beale had his for a couple of years.

I had 4.10 on mine for a year or so.

Couldn't stop the wheels spinning in every gear so took it off.

hoshy · 03-04-2012, 10:32 PM

Interesting, cheers. I hope the 3.91 is a little better on that front... though I'm not sure what problem with lighting the wheels up is

4.1 sounds just a bit too extreme I reckon, that's what my 140bhp 318iS had on it. And imho the 46 is already a bit buzzy, at least by comparision to the 36 Evo.

Did you notice much diff in terms of eco?

Quote:

Originally Posted by shimmy

Beale had his for a couple of years.

I had 4.10 on mine for a year or so.

Couldn't stop the wheels spinning in every gear so took it off.

17-01-2009, 10:58 PM	#1
pkumarm3 S2 - Picking it up Join Date: Jan 2009 Location: USA Posts: 41 Casino cash: $700	Anyone with upgraded LSD? (3.91 or 4.10)? hey guys was curious if any CSL owners have upgraded their LSD from the stock configuration to BMW motorsport 3.91 or 4.10. anyone? edit: Final Drive Ratio NOT LSD

18-01-2009, 05:28 PM	#6
englebert S5 - Full Throttle Join Date: Jun 2008 Location: Kent Posts: 397 Casino cash: $705	Someone else got it done, which is why he did it (albeit on a normal M3). Sounds good... but find the car quick enough as it is! __________________ '03 SG CSL - SOLD Making do with a CSL replica, 1M and E90 M3.

18-01-2009, 04:03 AM	#2
NZ_M3 S5, Sport On, DSC M-track Join Date: Jun 2008 Location: Auckland, New Zealand Posts: 1,434 Casino cash: $13579	You are talking about the final drive ratio not the LSD - that the lock diff. The final drive is a torque multiplier and running a shorter final drive means faster acceleration at the trade off of top speed.

18-01-2009, 11:56 AM	#3
bryce S5, Sport On, DSC M-track Join Date: Nov 2008 Location: Scotland (sw) Posts: 1,369 Casino cash: $2512	Not aware of any CSLs on UK forums that have done this modification. There's one man thats just done it to his M3 though and loves it. 4.10 I think.

18-01-2009, 12:22 PM	#4
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	Woppum has it on his CSL, TonyR did it many years ago on both of his. I've got a Drexler plated LSD with 4.1 final drive that will be going in soon.

18-01-2009, 12:39 PM	#5
bryce S5, Sport On, DSC M-track Join Date: Nov 2008 Location: Scotland (sw) Posts: 1,369 Casino cash: $2512	Oh aye, forgot Woppum was getting it done over the festive. Not been on Mtorque in an age.

21-01-2009, 02:20 PM	#7
Bealo Driving it like I nicked it Join Date: Aug 2008 Location: Everywhere. Posts: 2,540 Casino cash: $12738	Im going to do this ASAP i'm back to the States soon so i will hand carry a set from Turner motorsport back I will let you know how i get on with the car once fitted.

03-04-2012, 05:12 PM	#8
hoshy S3 - On the open road Join Date: Feb 2012 Posts: 80 Casino cash: $833	Did you get it fitted? How did you find it? I'm getting one next weekend so interested to know how it goes.