Need taller gearing on 96 Z3

[Venn]

Hi guys, been reading alot about diff change many are swaping for shorter ratio.

I actualy need longer ratio...

car is 96 Z3 was 1.9L swaped for a 2.8L M52, then a C-1 Procharger was installed on pushing 8 PSI.

Now tires keeps on spinning on hard accelleration... !

Would anyone tried to swap ring and pinion from different diffs ?
I found a used 1997 328Is 2.93 rear diff, casing does not fit but does the ring and pinion could be exchage ??


Thanks

Ben

[Venn]

Nobody have done some diff changes before ??

Please, give me some hints !

Ben

[Jared at Pelican Parts]

An M52 with 8PSI? I think you'll find that your tires will spin with any diff ratio. Thats a pretty powerful combination in a lightweight car.

I think I remeber hearing somewhere that the Z3 used the rear end off the E30. If you are lookinf for tal gears, maybe the diff out of an 325e.

[Venn]

Thank you Jared !

I was thinking about swaping ring and pinion but... nobody seems to have done it before.

I'll see !

Ben

[Jared at Pelican Parts]

Probably because the diff itself is so easy to swap out. I dont think I would bother changing out the ring asnd pinion, but try to find an entire unit that will swap in.

[Jared at Pelican Parts]

Ok, so I checked my sources, the Z3 does in fact have the same rear end as the E30,l so what you will want to do is try to find a diff out of a 325e which has a ratio of 2.78

Check to see that the saes are the same, then swap out.

[Venn]

thanks !

Now I just need to find one.

Ben

[Jared at Pelican Parts]

Try eBay or depending where you are, local junkyards, I've found that www.recycler.com is always a good source for parts in the Los Angeles area..

[Venn]

thanks a lot Jared !

I am located in Montreal, Canada...

I'll try my local Junckyard

Thanks again for the great service

Ben