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View Full Version : Transmission swap help M20 -> M50



tgrandahl
06-24-2006, 11:55 AM
So i spent yesterday flopping around under my car getting my new transmission in to find that the tail section was tilted slightly and the mount from my old transmission was not going to work. Is the m20 at a diffrent angle than the m50? The transmission looks perfectly straight and everything has fit fine so far.

So my question is will a mount from a older car with an m20 work? I looked through real oem and its hard to tell if the bracket is almost flat on one end like i need. Or do i just have to fabricate my own? Also why does the m50 have the additional mount in the middle that bolts to the bottom of the tranny? By the looks and feel of it its a much stronger mount, i think if i use the stronger rubber mounts again with the m20 backet or my own it should be strong enough but would like a second opinion. Has anybody here done this before?

This bracket almost looks like its flat on the left but its hard to tell from this view. Any m20 owners know?

calmloki
06-24-2006, 03:48 PM
Hmmm - I believe that swapping a M50 into an E30 using the E30 transmission requires rotating the transmission about 10 degrees and or bending the shifter - so if you are swapping an E30 trans into an M50 525 I suspect the same would be true...
Tom (hasn't done this. Yet)

tgrandahl
06-24-2006, 09:05 PM
bugga, so im off to make my own mount. Thanks calmloki

calmloki
06-25-2006, 08:54 AM
Here is a bit of info that may be of help -

http://f5.grp.yahoofs.com/v1/EMGeREfeAe56KwzE_u7wCv9VISH7_mHJcy-nK51oHB5hXmBLIAaWAQTbjG7TMXxlIZ69wa-fTeyNSDvDOXqtQ1ND6Y41QA/FAQ%27s/FAQ-Transmissions.htm

This is from the E30/m50 yahoo group -

http://autos.groups.yahoo.com/group/E30twincam/

may wish to join to see what all info is of help to you - very interested in your project...
Tom

tgrandahl
06-26-2006, 07:47 PM
Here is a bit of info that may be of help -

http://f5.grp.yahoofs.com/v1/EMGeREfeAe56KwzE_u7wCv9VISH7_mHJcy-nK51oHB5hXmBLIAaWAQTbjG7TMXxlIZ69wa-fTeyNSDvDOXqtQ1ND6Y41QA/FAQ%27s/FAQ-Transmissions.htm

This is from the E30/m50 yahoo group -

http://autos.groups.yahoo.com/group/E30twincam/

may wish to join to see what all info is of help to you - very interested in your project...
Tom

Thanks tom, that was defiantly helpful, the more I look at this now the more things I realize don’t fit.