Rear Lsd.

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Rear Lsd.
Topic Started: Fri Apr 10, 2009 4:59 pm (316 Views)
The Gorilla	Fri Apr 10, 2009 4:59 pm Post #1
Member Posts: 307 Group: Members Member #3,610 Joined: December 10, 2008	Hi, Some questions please- Anybody here running the ''spring blocks'' on their LSD, and if yes what is it like ? What other model rear diffs are compatiable with the 16v diffs, as I am looking for a 3.45 CW/P - Are any of these compatiable Rear diffs without the ASD function, ie Clutch plate type LSD ? Will the 16v Driveshafts bolt upto the compatiable diffs stub shafts, or do you have to run the 16v stub shafts so they fit the 16v half shafts ? I read somewhere that 2.3 and 2.5 16v half shafts are not the same, is this due to the 2.5's running ASD type rear diffs ? What other model halfshafts fit the 16v's ? Anybody know if the 93/99- 202- C Class rear subframe will fit a 190 ? I have a C36 AMG complete rear subframe with shafts, hubs, brakes, diff etc, which if it bolts up appears to sit the diff/shafts etc higher so if it fitted, then raising the rear suspesion C of G without altering the ramp angle would be much easier than moving up the mounts floor etc. if using the original 190 one ? Anybody know the diff ratio of a 190 2.6 Auto ? All help and information appreciated. Many thanks, The Gorilla.



tNz	Fri Apr 10, 2009 6:11 pm Post #2
Newbie Posts: 40 Group: Members Member #2,843 Joined: June 22, 2008	The Gorilla Fri Apr 10, 2009 4:59 pm Anybody know the diff ratio of a 190 2.6 Auto ? http://www.baureihe201.de/W201/technik.htm



Johnboy Mac	Fri Apr 10, 2009 6:36 pm Post #3
Member Posts: 1,608 Group: Members Member #2,771 Joined: June 12, 2008	Only thing I can advise on for sure is the 2.6 diff. Man. trans. to 08/89 3.27 - 49:15, from 09/89 3.92 - 47:12 Auto trans all 3.07 - 46:15



Cosmo2.5-16	Fri Apr 10, 2009 8:12 pm Post #4
Member Posts: 398 Group: Members Member #540 Joined: September 23, 2006	The half shafts from a 2.6 will fit a Lsd, not ASD. You can use most C/W and Pinons that are made for the 201 and 124 series, there interchangeable.



The Gorilla	Sat Apr 11, 2009 7:19 am Post #5
Member Posts: 307 Group: Members Member #3,610 Joined: December 10, 2008	Hi, Thanks for the replys and input. Any model in the 201 / 124 range run with a 3.45 or 3.64 CW/p ? Regards, The Gorilla.



The Gorilla	Sat Apr 11, 2009 7:24 am Post #6
Member Posts: 307 Group: Members Member #3,610 Joined: December 10, 2008	Hi, tNz- very useful link, thank you. Regards, The Gorilla.



RobertE	Sat Apr 11, 2009 9:23 am Post #7
Serial victim... Posts: 6,863 Group: Members Member #1,403 Joined: June 13, 2007	Later 2,3s also ran the ASD as opposed to the LSD setup. I don't know when the switchover took place, suggest 1986? I do not know, but people say that the LSD is superior in some respects...



dave_irl	Sat Apr 11, 2009 9:27 am Post #8
I love offset. Posts: 8,729 Group: Admin Member #6 Joined: November 2, 2005	The Gorilla Sat Apr 11, 2009 7:19 am Hi, Thanks for the replys and input. Any model in the 201 / 124 range run with a 3.45 or 3.64 CW/p ? Regards, The Gorilla. 1.8 manual has a 3.64 I think. I still have my old diff and Im considering a swap in the future, but the 3.07 isnt that bad actually. Will wait until I have the new engine in to see how the revs and diff match up.



matsalleh76	Sat Apr 11, 2009 12:16 pm Post #9
Matsalleh76 Posts: 140 Group: Members Member #447 Joined: August 9, 2006	Here is a link to a write - up we did a few years ago on some differential work we did that has info and hints that might help in your track diff project. I also have a spread sheet that I picked up somewhere that lists P/N's, ratios, body size, half shafts, etc for 201 & 124 diffs. It is quite helpful. I will try to post it in a separate posting. http://www.snapdrive.net/files/465230/Installing%20an%20ASD%20Differential%20in%20a%20non.doc bobf



matsalleh76	Sat Apr 11, 2009 12:27 pm Post #10
Matsalleh76 Posts: 140 Group: Members Member #447 Joined: August 9, 2006	Here is a link to the Diff spec/Part Number spread sheet mentioned above. It only covers petrol engined cars, no diesels are listed. http://www.snapdrive.net/files/465230/Diff%20Specs.pdf Here is a non-verified list of diesel diff ratios. I assume most are open diffs but I may be wrong as other than the German link posted above I do not know if either LSD or ASD were common as a diesel option. Diesels Ratios: Turbo Auto- 2.65 Turbo Manual- 3.46 2.5 5 Cyl. Auto- 3.07 2.5 5 Cyl. Manual- 3.64 2.5 5 Cyl. Manual "taxi" version- 3.67 190D Manual- 3.91 (3.92?), 3.23, 3.27, 3.42 bobf Edited by matsalleh76, Sat Apr 11, 2009 12:46 pm.



The Gorilla	Tue Apr 14, 2009 10:37 pm Post #11
Member Posts: 307 Group: Members Member #3,610 Joined: December 10, 2008	Hi, Matsalleh76- Thanks for the link on your Diff write up. Interesting stuff and lot of work and research in there. For Fast road and Track work, I think the ASD system is not really up to it, plus it just all adds weight and is something else to go wrong. A LSD with uprated or twin clutch packs, set to 45 up to 75% lock and 30/30 Ramp angles will improve the rear characteristics and keep the rear well in line. A Group N set up of 45% lock up is a very good compromise for a Road / Track car. There is a Drexler LSD on the CSL and it does make the car much more predictable near the limit than with the standard 25% LSD. Its set up with approx 75% lock, but in a progressive way. You need your backside to tell your brain that your nearing the limit, not just gone past it. Regards, The Gorilla.



pentoman	Fri Apr 24, 2009 11:55 am Post #12
Resident OVP Expert Posts: 2,697 Group: Members Member #11 Joined: November 6, 2005	The purpose of the ASD is to, in Mercedes words, reduce the possibility of loss of vehicle control and/or the reduction of the effectiveness of ABS during braking, when one side of the car is on a slippery surface, which can occur with a conventional LSD. So something to do with LSDs making the car less stable under braking; hence the ASD.



Racing	Tue Oct 27, 2009 8:01 am Post #13
Member Posts: 788 Group: Members Member #384 Joined: July 1, 2006	Some of the DTM cars actualy ran spools. We�ve made a spring pack solution a few yrs back that simply works great. No matter if the rear is a LSD or ASD as they basicaly work the same within. In case of ASD just scrap the lines and hydraulics. Lim slip is adjusted to approx 75-80%,and i�ve run this for yrs on the street with no ill effects. Have installed it on numerous cust cars that run the street with no ill effects. Only basic drawback is that the lim slip kind of cry out as you put the car in reverse and turn the steering wheel full lock,but that�s it. Difference in behaviour on the road is like night and day,and this mod really shines from that respect. The beuty of it is that this is something you can pull off yourself if you know your way around rear axles. Takes a couple of steel plates of approx 3mm thick highend steel. Drill a 29mm dia hole exactly in the middle of each plate. Toss the OEM e-clips that hold the yokes in place for the halfshafts as these aint needed. Get a pair of OEM 2.3-16 valvesprings. Compress these and lock with safetywire for install. Install one plate inside the differential carrier on each side of the spider gears. Install one spring per each open side of the differential. Now for the "unholy" part,and that�s where you weld a 6mm solid rod from each resp plate to the diff carrier with the TIG welder. Use appropriate weldrod for this. Done. When measured with a torq wrench at the yokes you should get a reading of approx 200-250Nm before break away. No need to replace disc clutch pack as the static load of the springs will make the sintered plates work no matter if they�re worn,and the linearity of the springs will compensate for wear. Ie;clean what�s in there out and reinstall....done deal.



Ake RT	Wed Oct 28, 2009 11:29 am Post #14
Newbie Posts: 49 Group: Members Member #1,623 Joined: August 17, 2007	What we do with our race cars in Thailand now is using Nissan Skyline's Diff with LSD (Nismo, Cusco, aftermarket) with custom shaft to use with W201 driveshafts. What we do because we can find easier final ratio compared to Merc OEM diffs and get the thing A LOT CHEAPER. Also, To suit the track, I have to use more than what Merc offer, 4.4:1 or 4.1:1 Edited by Ake RT, Wed Oct 28, 2009 11:30 am.



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