Can I put an M30 motor into my 525?

[540ii]

I have a 1990 525i with a blown motor. I was wondering if I could put a 535i motor (M30) into this car? Thanks in advance.

[Antrieb]

Sure, why not?

You need the m30 and tranny from a 535i 5-speed, 535i drive shaft, and rear end.

I have heard that the m20 wiring harness can be modified to work on the m30. Do some research.

[E34N]

Yes.. you can. But's not plug and play.. You'll need a lot more than just the motor like Antrieb stated.

[MMmmmpower]

Why not go with an s50/s52?

[4500 RPM]

Why not go with an s50/s52?

Being M20 originally, I'm not sure that would be any easier than an M30.

[MMmmmpower]

Being M20 originally, I'm not sure that would be any easier than an M30.

True but if your going to invest that time/money why not do it right the first time

[BMVV4Life]

^true but the M30s can be had dirt cheap compared to S50/52

[abakos]

You might find that it's incredibly cost effective to buy the M30 pre-installed in an E34. :)

[540ii]

thanks for the input....i might just stick with an M20 just cause i;m trying to save money...i;ll update on the status of the project

[brosher]

You should find this thread helpful, although he started with an M50

http://forums.bimmerforums.com/forum/showthread.php?t=554106

[Hari]

True but if your going to invest that time/money why not do it right the first time

M30 > S50

For the price of an S50 you can get a M30 + mods.

[grawk]

I'd suggest buying a 535i and selling your car off for parts, you'll come out ahead over doing any engine swap :)

[4500 RPM]

I'd suggest buying a 535i and selling your car off for parts, you'll come out ahead over doing any engine swap :)

+1

Best idea.

[E34N]

I'd suggest buying a 535i and selling your car off for parts, you'll come out ahead over doing any engine swap :)

+2

Wanna buy mine?:devillook