fauvre

I am going to put a limited slip differential in my car - after a track day it becomes quite clear that it is necessary for these cars. I can do an aftermarket install, like Kleeman, but would prefer to use AMG's. Has anyone done this in the US? I know the AMG factory will do it in Germany.

Also, any positive or negative experiences with the tuner LSDs?

Thanks

V12Godspeed

I was just asking myself the same question the other day, will an E63 LSD fit in an E55???....Hmmm....that is a very good question, lol!

CynCarvin32

Both the AMG and Kleemann LSD are very conservative and offer limited locking ability. If you really want a top end diff for track driving a quaife is the the only real option. It offers 100% locking as long as both rear wheels have contact with the ground.

It will transform the car at the track. The kleemann diff really was designed for drag racing reasons and a quaife is designed to be best on a road course.

stevebez

The only LSD to fit is a Quaife ... forget the rest.

Vadim @ FD

Fauvre: Here are your options on the diffs:

1. AMG - Factory Salsbury style differential. Somewhat pricey ~$5K and hard to get.

2. Kleemann - more like a modification to a stock unit that adds spring plate to spider gears. Fairly easy to install, but not a true diff.

3. Quaife - Torsen style differential. Works very well on 55/32s. Easy availability and the best price. ~$2K installed.

4. BRABUS, RennTech, Carlsson - mostly resellers of AMG diff with added mark-up. One quote for one of my old customers was over $9K, plus install.

fauvre

Sounds like it's a Quaife... Any issues with factory traction control settings and the Quaife?

defeasible

Fauvre - let us know what you have found out. Another E63 owner here about to do the same, but I am definitely a bit concerned about goign anything other than the crummy 40% LSD offered by AMG for the effect on the control unit and programming. Very curious if anyone can confirm success with Quaife.

Jrocket

The LSD's are mechanical devices,no electronics are involved in either the factory AMG or the Quaife.Only time you'll need anything tuning wise(electronics)will be if you change the gear ratios.

Zod

if i recall there was a debate that MBuse stated that the AMG ls suited the amg cars and that other lsd could cause damage. do not recall what came of this debate though

p.s thanks for the info vadim

rflow306

I agree the Quaife is the way to go here is their website http://www.autotech.com/quaife/index2.htm

Jakpro1

Quaife hands down. Great unit! Had some reports of just plug n play, no shimming required.

jangy

Many here have Quaifes on their cars with no issues. I do not know about the E63.


The AMG LSDs are a bit od. The one for the E55 is a 30% locking and the E63 on eis a 40% locking. I have not tried anything, but was told that the E63 one will NOT work on the E55 and that is why they decided to offer both models. The cost is the same for both.

I'll be quaifing soon.

juicee63

Can you explain what the % lockup ratings mean in real world track experience?

30% vs40% vs 100%? Does this refer to wheel slippage?

Thanks Jangster

jangy

Basically, there are two styles. There are the ones that have an "on - off" type engagement and those that do the gradual (quaife).

In the case of the AMG ones, the 30% and 40% lock up refer to the "on - off" setup. So, as slippage is noted, the diff puts a 40% lock on both wheels and the rest of the power is distributed as with a standard diff. For the E55s, we would only get a 30% lock, which is still noted, but not maximal when you have this much power.

The quaife, on the other hand, is variable all the way from 0% to 100%. It is a mechanical system (as is the AMG one), but it just continues to add lock up as it gets more slippage. That is why this setup is considered ideal over the other.

It is much smoother, as it can transition better and it ultimately even has a stronger lock. They also have an excellent name and reputation.

Vadim @ FD

Mr. Fauvre went with Quaife. We installed several months ago and it is running great.

Highly recommend it.