325ix diff

[ed chitwood]

can you use a 325ix diff in a reg 325is is there any benifit

[erik325i]

yes, you can put a 325ix diff into your 325is.

You wil benefit from quicker accelleration due to lower gearing, but will suffer in gas milage due to higher rpms on the freeway.

Also, it depends which ix diff you get. I believe the auto got the 4.10 LSD and the manual got the 3.91 LSD. Both are lower gears than your 3.73 LSD in your 325is.

-Erik

[Van Westervelt]

I was under the impression you could not use ix diffs on the rwd, odd

[erik325i]

I was under the impression you could not use ix diffs on the rwd, odd

they have some differences, but you can interchange them.

The ix uses a viscus type LSD, whereas all of the other e30s use a clutch type LSD.

-Erik

[ed chitwood]

Is there an benefit to be had by going to a viscus type lsd diff.

[kansas-ix]

mad burnout ability,

No but I put my 3.91 V from my IX into my 91 318i over las weekend and it rocks on the highway thats for sure, 3400 at 80mph, gas meter pinned at 30mpg