I am doing a m20 325 conversion and wanted to know a few things if anyone can help?
1. The engine came out a 1990 car Do i have to find a gearbox around the same year or can i use any m20 gearbox no matter what the year is?
2. Same as above but with diff
3. If car had a 3 part exhaust system can i just buy a 2 part and it will just fit ok?
Thanks
some advice on my conversion?
Moderator: martauto
-
gnrsoul
- E30 Zone Regular

- Posts: 612
- Joined: Mon Oct 05, 2009 11:00 pm
- Location: Kincardine Scotland
-
gnrsoul
- E30 Zone Regular

- Posts: 612
- Joined: Mon Oct 05, 2009 11:00 pm
- Location: Kincardine Scotland
Anyone?
I know they might sound stupid but just want to make sure as some im looking at on the bay say only up to '88 just wanted to ask incase there is any sight diffrences?
I know they might sound stupid but just want to make sure as some im looking at on the bay say only up to '88 just wanted to ask incase there is any sight diffrences?
-
Brianmoooore
- E30 Zone Team Member

- Posts: 49360
- Joined: Mon Jan 10, 2005 11:00 pm
Any M20 gearbox, with matching gear linkage and prop.
Diffs. come in small case and medium case, and of course, with differing ratios, but all are physically interchangeable.
There may be a difference in the manifold to downpipe flanges, but with a matching manifold, the two piece will definitely fit.
Diffs. come in small case and medium case, and of course, with differing ratios, but all are physically interchangeable.
There may be a difference in the manifold to downpipe flanges, but with a matching manifold, the two piece will definitely fit.
-
gnrsoul
- E30 Zone Regular

- Posts: 612
- Joined: Mon Oct 05, 2009 11:00 pm
- Location: Kincardine Scotland
Thank you
-
motormanmick
- E30 Zone Regular

- Posts: 259
- Joined: Sun Nov 02, 2014 11:00 pm
- Location: Coffs Hbr, Aust
further to Brian, help with gearbox and diff selection, cheersBrianmoooore wrote:Any M20 gearbox, with matching gear linkage and prop.
Diffs. come in small case and medium case, and of course, with differing ratios, but all are physically interchangeable.
There may be a difference in the manifold to downpipe flanges, but with a matching manifold, the two piece will definitely fit.
http://www.e30zone.net/e30zonewiki/index.php/Drivetrain
http://www.e30zone.net/e30zonewiki/inde ... fferential
