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e21 m52 swap

Posted: Tue Jan 21, 2014 7:35 pm
by barry2830
Hello,
Sorry for my bad English.
I want a M52B28 in my e21 and my gearbox from the m20 retained.
The axis of the gear box m20 is smaller than that of M52.
How can I fix this?

The axis of the m52 (larger);
Image


The axis of the m20 (smaller)
Image

I also want to remove the steering pouwer pump, does anyone know what belt I need??
Image

I hope someone can help. Mine :mrgreen:

Re: e21 m52 swap

Posted: Tue Jan 21, 2014 9:32 pm
by ducky1
Change the spigot/pilot bearing to a 32x12 mm and the belt should be the one below I used it on a m50b25

http://s267.photobucket.com/user/ducky1 ... 4.jpg.html

sorry it aint might be a shorter one I have a extra pully

http://tapatalk.com/tapatalk_image.php? ... lnZS5qcGc=

Re: e21 m52 swap

Posted: Wed Jan 22, 2014 8:19 am
by nas80
6pk 1420 belt and you need m20 pilot bearing.

Re: e21 m52 swap

Posted: Thu Jan 23, 2014 3:05 pm
by barry2830
thank you guys

Re: e21 m52 swap

Posted: Tue Feb 18, 2025 9:22 pm
by mcjjordan
Can you recall exactly size of spigot as i never made a note & will be doing the job again this year