w124 retrofit LSD?

[aka$h]

Im looking at ways of fitting a mechanical LSD on my car.
After doing s fair amount of searching on the net, it seems the closest MB every got toa independent LSD as ASD. But it seems a control unit is also required for ASD as well as additional wiring.
Does anyone have any suggestions?

Cheers

 

[Gollom]

What is an LSD?

(Hands up all those who are as old as me and had visions of a car high on drugs or costed in old money? :bannana: )

Steve

 

[ADY1983]

Limited slip diff..

http://www.strikeengine.com/technical_information/limited_slip_differential_lsd.html

 

[grober]

Asd

A definition from Wolfgangs site. http://www.whnet.com/4x4/ets.html
Automatic Locking Differential (ASD)
The "automatisches Sperrdifferenzial" is an electrohydraulically operated automatic locking differential using multi-plate clutches. It works up to 19 MPH and can be used on a single axle like in some smaller diesel models where is was optional in the US since 1991 instead of ASR which is typically used on the more powerful models. ASD is also one component in the old 4matic.

When I enquired a few years ago about this It was suggested that AMG used to put "stand alone" LSD's in some of their early models. Probably prohibitively expensive even if you could still get them since they often re-engineered the whole rear end-- subframe, uprated diff etc etc.

 

[grober]

torsen diff??

What about a TORSEN DIFF http://www.torsen.com/products/products.htm Great site by the way.
HAVE A LOOK AT THEIR APPLICATIONS PAGE TO SEE THE MODELS YOU COULD SCAVENGE FOR PARTS.

 

[Doodle]

Have you tried speaking to one of the diff specialists? I'm sure someone like Quaife could come up with something suitable for the job.

 

[Shude]

The EPC has LSD diffs listed for most models, I'm sure an OEM solution is possible but don't expect it to be cheap, I think the diffs were megabucks.

 

[janner]

A mechanical LSD would be great in the W124. Let us know if you find one. ASD is going to cost time and money for a very second rate solution.

 

[Bobby Dazzler]

Have you tried speaking to one of the diff specialists? I'm sure someone like Quaife could come up with something suitable for the job.

I think Quaife are the guys to talk to too. A few C32 owners in the US have fitted them, and I know a couple have been fitted to modified Astra VXRs to help transfer the power to the road. Only heard good things so far.

 

[Uberwagon]

This has been discussed at great length on 500E.com.

Basically to do it you need to butcher parts from various Diffs. For road driving I don't see it as any benefit. Unless flooring it on a wet road I only ever get wheelspin when I have my ABS sensor removed (Removes the TC completely) when I drive like a complete tool.

Also a LSD can have the added negative affect of creating more understeer in some set ups.

Dave!

 

[bolide]

For road driving I don't see it as any benefit

To an extent I agree. The benefit will only be seen in very slippery conditions and when driving exceptionally hard - quite out of character for most MB drivers

Also a LSD can have the added negative affect of creating more understeer in some set ups.

Only when you have a really tight diff

Traditional mechanical LSDs have a fixed % lockup, typically 25% (eg BMW E30) though some could be modified to be very tight (eg BMW 2002 modfied to 75%). Torsen, viscous and other modern diffs can have varying percentages of lock and would be preferable in this application, I think

Most of the time in my 2002 I only see the benefit on track when exiting corners under full power. But then it's not a heavy, high-powered car

Nick Froome
www.w124.co.uk

 

[230K]

Hi

LOL

This thread has got me thinking of my 1986 Toyota GT Coupe. LSD as standard, i know why you want one, every RWD car should have one.

Donuts, power slides etc they are the ticket.

Sorry of no help in you quest to find one but thanks for cheering me up.

230K

 

[Uberwagon]

LSDs are overrated!

 

[janner]

Ahh, but you'd lay down two black lines with a proper LSD.

 

[aka$h]

Ahh, but you'd lay down two black lines with a proper LSD.

Now you see.......thats why I want one
ill try getting in touch with quakes and see what they say, so is it clear that MB dont do a LSD other than ASD?

 

[aka$h]

Ive found some info, apparently it is possible to modify the existing diff by fitting the part below:
Mercedes-Benz, LSD differential (internal ring gear carrier), part # 126-350-40-23,

That would give you a mechanical lsd.
Ill be doing some more homework on it, so watch this space!

 

[sunman]

someone has done this by transferring internals of a LSD diff into a housing that fits the w124. This person made a shim as well. Not sure what it was for. I have "heard" LSD internals from the old w140 will fit a w129 casing with a new back cover. This requires lots of work and also special jigs to shim it properly. At 30% locking, I feel it's not worth the trouble. It's not like the Kleemann LSD's at 60% or quaif LSD's at 0-100% locking.

 

[TVRTASMIN]

I have a Quaife LSD in my Tasmin racer. It cost about £500 plus fitting into the diff case.

If you can get a Merc one from some other model that will fit, that would be the cheapest option.

 

[1998K]

I went to the dealer, some times ago, asking the possibility to retrofit a LSD to my '98 W202, he said me it's not possible, but probably he didn't want to do the job

so any solution that are also available for a W202 will be much appreciated.

 

[grober]

Found this thread on LSD http://www.mercedesshop.com/shopforum/showthread.php?t=162375
AND
This reference to a uk supplier.http://www.500ecstasy.com/forums/showpost.php?p=29943&postcount=9