ASD question - limited slip or not? - Page 2 - PeachParts Mercedes-Benz Forum

babymog · #1 03-23-2009, 12:08 PM

In LSD work I've done, I was able to specify how much lockup (what %) I wanted, I've gone up to 60% for some racing applications.

Dave or others might know if the parts are available to create a tighter rear diff for these cars also, I'm guessing yes. Looser also.

Quote:

Originally Posted by Bio300TDTdriver

YIKES! That sure doesn't sound easy. So if I just switch to the LSD and not all the electronics, it would give me 35% lock up, if I rebuilt the clutch packs, is that correct? Would I still need to hook up the hydraulics?

Does my wagon and the 90-93 sedans have the same rear differential?

gsxr · #2 03-23-2009, 06:28 PM

Quote:

Originally Posted by babymog

In LSD work I've done, I was able to specify how much lockup (what %) I wanted, I've gone up to 60% for some racing applications.

Dave or others might know if the parts are available to create a tighter rear diff for these cars also, I'm guessing yes. Looser also.

Nope, not with the Mercedes design. If you try to make the clutch pack tighter, you cannot assemble the diff (the spider gears will not rotate into position). BT, DT. When set to spec, it immediately (within 100-200 miles of driving) wears enough to allow turning left vs. right sides by hand. It only offers the ~35% lock when under load (torque applied from engine to the wheels), this puts presure on the clutches and causes them to engage.

You can add a spring block, which adds pressure to the clutch pack at all times. This basically simulates ASD engagement at all times. You adjust the "percent" lockup by stronger or weaker springs. The only drawback is that you cannot use circlips to hold the axle flanges in place, they will float in & out. The folks who have done this (usualy the 190E-16 crowd) say it works ok though. For street use, I have not found it necessary to do this. I'm sure on the racetrack (road course or autox, not dragstrip!) it's a bigger deal.

babymog · #3 03-20-2009, 09:27 PM

That brochure came in my 4matic when new (in '91), in the manual pack. I haven't seen the manual since I sold "Ruby" about 13years ago, thanks for the trip down memory lane Dave.