LSD Diff 3.73 into an Super Eta

[e30michal]

I'm looking for a LSD for my super eta and im new with BMW/RWD. So I found a 3.73 LSD but I dont know if it's a proper one for a car that the rpm goes to 5500. I read that for a eta isn't really good but didn't find anything about seta and my e30 is a summer car/daily

[MR 325]

It'd be a little short but totally drivable. Something in the 3.25 to 3.46 range may be a bit better.

[e30michal]

On which car can I find lsd 3.25 3.46?

[MR 325]

E28 and E24 cars are the most common. You'll just need to swap over to the E30 output flanges and rear cover.

[e30michal]

sweet thanks man

[Wanganstyle]

3.15, 3.23 are all avail and Plug and play from MODERN Z3's / Z3M.

dont put in some old crap and expect it to be reliable for a daily driver. Price up the bearings, seals, R&R labor and you wont like buying an ancient diff...

[MR 325]

3.15, 3.23 are all avail and Plug and play from MODERN Z3's / Z3M.

dont put in some old crap and expect it to be reliable for a daily driver. Price up the bearings, seals, R&R labor and you wont like buying an ancient diff...

I'm sorry but just because a diff is old doesn't mean it's bad or "unreliable". I have a 3,46 LSD in my turbo E30, The diff is from the mid 80's and is silent, locks perfectly, and handles the 270whp.

[Wanganstyle]

The bearings and seals do wear on these silly things. Older = old bearings old seals.

I doubt many have changed the seals+bearings AND races of a diff. Its a PITA and more money than buying another secondhand mystery diff...