LSD in what E36 models???

**D Davis 89 325iS** · 07-20-2001, 08:38 PM

In what models did the LSD diff come standard on the E36's? I know on E30's they only came on the 325iS and 318iS. Also, what gear ratio diff's were standard for the 325i E36's?

A foor door 325i E36 lets say, what rear diff did it have and is it LSD? Thanks.

**232is PoWeR** · 07-20-2001, 08:40 PM

the 325 manual or auto??? but its not LSD...only M3's

**blubimmer** · 07-20-2001, 08:43 PM

I am not sure what models had what as standard, but my 328is ('97) had stock limited slip.

**D Davis 89 325iS** · 07-20-2001, 08:52 PM

I am fairly sure it is an auto

**Stylin** · 07-21-2001, 12:47 AM

I thought only Ms had LSDs.. I know my 97 328i 5 speed didnt.. the stock 2.93 diff... or am i wrong..??

:

**Ali** · 07-21-2001, 01:03 AM

A aftermarket racing differential was put on mine and my car has LSD, my 2 back tires spin at the same rate.

**Atticka** · 07-21-2001, 02:50 AM

hey willy.....I really want to know too.....

been wondering about the 97 328's and whether or not they have LSD.

**Stylin** · 07-21-2001, 02:57 AM

they dont.. from what ive seen they dont.. mine didnt and I know Chris328 doesnt either from his donuts.. So my conclusion is no the stock 2.93 is not a limited slip.. which BTW.. kicks ASS.. u can blast the hell out of a corner HARD as hell now.. Now I know what Ive been missing with the M3's.

**bungy42** · 07-21-2001, 08:47 AM

My '92 325i 4-door has stock LSD. I'm not sure about the 2000 323iT.

**jy630** · 07-21-2001, 09:00 AM

My 95 318i manual has a stock LSD. I think it may be an option though. I can't really remember 6 years back.

**blubimmer** · 07-21-2001, 09:31 AM

Originally posted by Atticka
hey willy.....I really want to know too.....

been wondering about the 97 328's and whether or not they have LSD.

it's really easy to find out ya know.
Just get it up to 4k rpms or so and dump the clutch. If both rear wheels spin, then you know you have a limited slip diff.
like i said b4, i have a '97 328is and mine came w/LSD stock, (It's sitting in my garage now though because I have a Quaife diff. with a 3.46 gear

: ) so saying that all the 2.93'ers didn't have a limited slip diff. isn't accurate.

**Stylin** · 07-21-2001, 11:08 AM

Here is a clip of Chris doing donuts in his 328i..

http://209.235.235.204/bimmerfest/mo...nnordonut.mpeg

Notice the driver side wheel only spinning.. from my own past experience I used to only spin 1 wheel as well...

Blu.. maybe u got the lucky 2.93 LSD..??

**FLiPModE** · 07-21-2001, 11:29 AM

From what I've heard, 328's with sport package have the LSD, dont know for sure though.

**Ali** · 07-21-2001, 01:02 PM

Damn that donut was weak.... so my car difenitvily has LSD cause both my wheels smoke when I do donuts and there is alot more smoke than that!

**D Davis 89 325iS** · 07-21-2001, 03:30 PM

When i do a donut, it just like stand still and the back of my car comes around. i done's got in a huge circle, and my tired get really smoking! That video looked like me trying to do a donut in my 86 325e! but none the less it was a BMW video so it was cool.

**Stylin** · 07-21-2001, 03:34 PM

yeah.. me too.. before I changed to my 3.38 LSD. So perhaps the sports package comes with LSD?? Someone confirm.. Real data pls.

Want more vids...?

Here u go.. these are from Bimmerfest..

http://209.235.235.204/bimmerfest/movies/

**jon** · 07-22-2001, 02:18 AM

On my '95, it was an option. I just looked at the sticker, so I can say with (mild) certainty that lsd was an option, not stock on 95 318's.

**ae86_16v** · 07-24-2001, 01:47 AM

dood don't you guys do this...

jack up the car...leave it in neutral and just turn one of the wheels with you hand or something.

See if the other side spins...the same direction...if it does then you got LSD...

**Stylin** · 07-24-2001, 01:56 AM

OK.. so where were we..

**Matt M.** · 07-24-2001, 01:23 PM

Here's the deal:

On early (up to 96) E36's, LSD was an option. It came standard with the sport package. However, choosing the ASC option eliminated the LSD.

On later (97 and up E36's), LSD was UNAVAILABLE because ASC had become standard.

All E36 M3's have LSD, even though the 96+ cars also have ASC standard. These, along with 850CSi's and M coupes, are the only cars to have these options together.

E36 325's had a 3.15, auto's had a 3.91. E36 328's had a 2.93, not sure about the auto's. 3.0 M3's had a 3.15. 3.2 M2's and M3 LTW's had a 3.23. M3 auto's had a 3.38.

All BMW factory LSD's are 25% lockup.

Hope this helps.

- -Matt <----full of worthless E36 info.

**Russell328is** · 07-26-2001, 01:12 AM

Boo Hoo! I want an LSD!

**ae86_16v** · 07-26-2001, 04:26 AM

Thanks for the information Matt.

I got a question for you,

LSD keeps the outer wheel spinning at the same rate as the inner wheel around a corner correct?

ASC only applies brakes to the wheel that is spinning more doesn't it?

Thanks in advance.

Kenneth
97 328is

**Matt M.** · 07-26-2001, 09:29 AM

Originally posted by ae86_16v

LSD keeps the outer wheel spinning at the same rate as the inner wheel around a corner correct?

Kenneth,

That's almost the right definition, but you didn't take into account the lockup porcentage; LSD limits the speed and torque differences between the two wheels on an axle, the permissable difference being decided by the lockup. A totally locked (100% LSD) is of course very uncomfortable to drive; the rear end "hops" around low speed corners.

This might be a better way to look at it: torque, much like water and electricity, is inclined to take the path of least resistance. So in an open diff, a wheel that is slipping, either due to poor traction, or cornering weight shift, will have the majority of torque directed to it, causing it to spin. LSD requires that a substantial quantity of that torque go to the wheel with greater traction. A torque biasing differential (like a Quaife) does this even more ffectively.

ASC only applies brakes to the wheel that is spinning more doesn't it?

Unlike DSC, ASC only uses braking at low speeds (less than ~20mph), and only on the drive wheels.

At higher speeds, ASC relies solely on throttle modulation and iginition control.

Theoretically, the low speed brake modulation that ASC is capable of should act as a variable lockup LSD, from 0% to almost a full 100% if the situation dictates it.

If only it actually worked that way in practice.

How can you call yourself the ultimate driving machine and not have LS be standard on every model, yet cruise control is?

Hope this helps.

- -Matt

**232is PoWeR** · 07-26-2001, 12:03 PM

does limited slip decrease the amount that the drive wheels are spinning separately around corners??? and having a specific (somewhat lower) percentage is better than 100%??? but isnt 100 bad cause around hard corners, doens the outside wheel always spin more or something like that, so you would be able to corner???? thanks (im confused)

**Sean~328i//EastBay** · 07-27-2001, 12:57 AM

yaa from what i have heard LSD was standard on e36 until the 328's came out or ASC was intro'ed as standard.
Also agreeing with Matt, LSD transfers power from the slippin to the gripping wheel, while ASC upon detection of wheel slippage applies selective braking and cuts power to the sliping wheel.
While they both sound similiar ASC unlike LSD is not transferring power to the gripping wheel from the slipping wheel. It breaks power to the slipping wheel irrespective whehter one or both wheels are slipping. Hence ASC and LSD cannot occur simulatneously.
Further in complete snow BMW thus advises ASC to be turned off.