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Getting 300hp from M30 hard... (archive)
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Posted by RussC on January 09, 2001 at 13:32:07:

In Reply to: Re: Euro E34 M5 engine into E28 535i? posted by Scott P on January 08, 2001 at 07:31:10:

The 3.9l M30 conversion with 10:1 compression and all the head work you can throw at will may get you to 300hp, but just barely. This enigine will cost you ~$9k also. I priced one ~2 years ago. The big expense is the 3.9l crank, cost of $2.5k.

RussC


Sounds intriguing. I've not done it, bet someone has though! that would be a lot of power but A LOT OF MONEY too. I'd think a 3.5 rebuilt to 3.6-3.8L turbo would be as much or more power, less expensive and less headache and maintenance.
Just MHO.
Scott P.
This might have been covered before, but I couldn't find the answer in the archives.

I'm under the impression that putting an E28 M5 engine into an E28 535i is (more or less) plug-n-play, and also that putting the E34 M30 3.5L engine into an E28 535i is pretty no-sweat too (provided you have the right year so that the mounting bolts line up). So my question is, has anyone done an E34 M5 motor into an E28 535i - or has anyone looked into it and can give some info as to viability? Would it meet up to an E28 535i 5-speed tranny ok, or are there other issues?

Thanks much,

Azure
'86 US 535i,
'77 Euro 520i former owner.





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