84 b27 swap to 89 b25 HELP

[ginger1340]

recently purchased a new to me m20b25 to swap into my 1984 325e. my original eta had a blown head gasket so rather than put money into an engine i didnt really love i just got the b25 so one day i can possibly turbo it.

i need help with the swap however. because r3vs search system is just a bit weird (or maybe i just dont know how to use it properly) i cant find any links to build threads that would help me. if you have any advice for me for an e to i swap or you know some good links, i would appreciate it greatly. thank you

[jeffnhiscars]

they are the same shape so bolting up is not complicated. However, the b25 uses motronic 1.3 so read the sticky on this swap. Ifnyounare keeping your eta trans then the cps which is currently in the bell housing will now be on your crank damper. Etc etc

Lots of data to search and read.

[ginger1340]

still looking for info. bump. please help

[Kershaw]

use google to search and jeff gave you solid advice.

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=e%20to%20i%20r3vlimited

[e30onBBSs]

I think he means swapping the whole engine? Do m20b27 transmissions match m20b25?

[Jordih]

I think he means swapping the whole engine? Do m20b27 transmissions match m20b25?

Yep, same tranny.