Which bmws had 3.25 lsd as diff for 325e swap

[cirrusblue]

Hello. Like a lot of folks I'm trying to source a 3.25lsd for my chipped 87 eta. The yards I've been calling haven't been super helpful because I don't know the exact models from Bmw and the years that may have had a 3.25 lsd. Can you guys give me any models and years I can use when I'm looking? I know some 535is had them etc. Thank you v much.

Sent from my XT1528 using Tapatalk

[cirrusblue]

The current diff is a 2.83lsd.

Sent from my XT1528 using Tapatalk

[cirrusblue]

The current diff is a 2.83lsd.

Sent from my XT1528 using Tapatalk

2.93. Sry

Sent from my XT1528 using Tapatalk

[cirrusblue]

Differential Ratios

We have the listings from 1987 thru 1994 but none of the rest. If you know of a resource for the other years please let us know.

Explanations: (M)=manual transmission
(A)=automatic transmission

E30 1987 1988 1989 1990 1991 1992 1993 1994
318i/is (M42) * * * * 4.10 (M) * * *
318ic (M42) * * * * 4.27 (M) 4.27 (M) * *
325 2.93 2.93 * * * * * *
325e/es 2.93 * * * * * * *
325i/is/ic 3.73 3.73 3.73 (M) 3.73 (M) 3.73 (M) 3.73 (M) 3.73 (M) *
4.10 (A) 4.10 (A) 4.10 (A) 4.10 (A) * *
325ix * 3.91 3.91 (M) 3.91 (M) 3.91 (M) * * *
4.10 (A) 4.10 (A) 4.10 (A)
M3 * 4.10 (M) 4.10 (M) 4.10 (M) 4.10 (M) * * *

E36 1987 1988 1989 1990 1991 1992 1993 1994
325i/is * * * * * 3.15 (M) 3.15 (M)
3.19 (A) 3.19 (A)
318i/is * * * * * 3.45 (M) 3.45 (M)
4.45 (A)
325ic * * * * * * * 3.15 (M)
3.64 (A)

E28 1987 1988 1989 1990 1991 1992 1993 1994
528e 2.93 3.25 (M) * * * * * *
535i/is 3.25 3.25 * * * * * *
M5 * 3.91 (M) * * * * * *

E34 1987 1988 1989 1990 1991 1992 1993 1994
525i (M20) * * 3.73 (M) 3.75 (M) * * * *
4.10 (A) 4.10 (A) * * * *
525i (M50) * * * * 3.23 (M) 3.23 (M) 3.23 (M) *
4.10 (A) 4.10 (A) 4.10 (A)
525it * * * * * * 4.10 (A) *
530i * * * * * * * 3.07 (M)
3.15 (A)
530it * * * * * * * 3.23 (A)
535i * * 3.46 (M) 3.46 (M) 3.46 (M) 3.46 (M) 3.46 (M) *
3.91 (A) 3.91 (A) 4.27 (A) 4.27 (A) 4.27 (A)
540i * * * * * * * 2.93 (A)
M5 * * * * 3.91 (M) 3.73 (M) 3.73 (M) *

E24 1987 1988 1989 1990 1991 1992 1993 1994
635csi, L6 3.64 (M) 3.64 (M) * * * * * *
3.91 (A) 3.91 (A) * * * * * *
M6 3.91 (M) 3.91 (M) * * * * * *

E23 1987 1988 1989 1990 1991 1992 1993 1994
735, L7 3.46 * * * * * * *

E32 1987 1988 1989 1990 1991 1992 1993 1994
735i/il * 3.64 3.64 (M) * * * * *
3.91 (A) 3.91 (A) 4.27 (A) 4.27 (A)
740i/il * * * * * * * 2.93 (A)
750i/il * 3.15 (A) 3.15 (A) 3.15 (A) 3.64 (A) 3.64 (A) 3.64 (A) *

E31 1987 1988 1989 1990 1991 1992 1993 1994
850 * * * * 2.65 (M) 2.65 (M) 2.65 (M) *
3.64 (A) 3.64 (A) 3.64 (A)

[cirrusblue]

I found a cool chart...

http://www.vinesauto.com/diffratio.htm

here

[kronus]

E28s are 3.25, as are E36 M3's. You'll need to swap the rear cover and output flanges for both.

[mr.vang]

You can get the gears off ebay and swap in your lsd unit. Also, you'll learn a thing or two while you put together the diff.

[e30rapidic]

E28s are 3.25, as are E36 M3's. You'll need to swap the rear cover and output flanges for both.

True but are you sure the e36 M3 diff isn't a 3.23?

It will be better/cheaper for you to find a complete diff as the carrier size in the 2.93 is different than what you need to swap gears.

[cirrusblue]

I'd love a complete diff. The issue is I can't find one. I'm calling all over.

Sent from my XT1528 using Tapatalk