Final drive

Need technical Q/A then you're in the right place

Moderator: martauto

User avatar
dvng
E30 Zone Newbie
E30 Zone Newbie
Posts: 5
Joined: Mon Jan 10, 2005 11:00 pm

Post Fri Jul 22, 2005 4:35 pm

what is the final drive ratio that came stock on a e30 325i Auto ?
jmc330i
Engaged to the E30 Zone
Engaged to the E30 Zone
Posts: 6621
Joined: Mon Jan 10, 2005 11:00 pm
Location: Somerset

Post Fri Jul 22, 2005 4:53 pm

I think it was either 3.64 or 3.73.

HTH
James
'91 325i Sport
'93 318i touring 16v
User avatar
Gunni
E30 Zone Addict
E30 Zone Addict
Posts: 2115
Joined: Tue Jan 11, 2005 11:00 pm
Location: Oxford

Post Fri Jul 22, 2005 5:26 pm

ItԚ´s 3,91 or 4,1
With great challenges comes great engineering.

Gunni
@ 2012 VEMS group buy !!
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Fri Jul 22, 2005 11:24 pm

The H reg Touring auto tha t became my M50 project had a 3.91.
User avatar
dvng
E30 Zone Newbie
E30 Zone Newbie
Posts: 5
Joined: Mon Jan 10, 2005 11:00 pm

Post Sun Aug 07, 2005 3:15 pm

i've crawled underneath my car and checked the rear diff and it reads 3,15, now how did that happened. Anybody knows which e30 model uses a 3,15 rear diff?????
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Sun Aug 07, 2005 4:15 pm

That's the diff you need for an M50 conversion with an E36 gearbox. Haven't got a black and silver cover on top the engine, have you?
Don't think any E30s had a diff as tall as that, except perhaps a 325e.
User avatar
dvng
E30 Zone Newbie
E30 Zone Newbie
Posts: 5
Joined: Mon Jan 10, 2005 11:00 pm

Post Tue Aug 09, 2005 4:53 pm

mine is a m20b25, is the final drive compatible with this engine...