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-   -   m30 or m50 swap for e30 (http://www.maxbimmer.com/forums/showthread.php?t=132455)

Another BM 04-25-2010 12:39 PM

m30 or m50 swap for e30
 
So i just picked up a 87 325e.

and of course i'm gonna put some new life into her.

But i wanna plan out a route and stick to it.
One of my major decisions is what motor to go with.

I want it to have as much power as possible without going FI.
Should i go with the more powerfull engine m30, or the newer
m50.


What bolt ons can i do to each motor

King Luis 04-25-2010 01:02 PM

if your not going with the s50/s52 motor, i say go for the rebuilt m30.

Another BM 04-25-2010 03:48 PM

well the s5x line motors carry a nice price tag..

The m30 is a great tq motor.

the m50 is newer and better to upgrade.

njansenv 04-25-2010 06:07 PM

M50 if you put a lot of miles on: only because fuel mileage is significantly better.
The M30 will be quicker.


I have an M30 drivetrain available.... :)

richie_s999 04-27-2010 08:12 AM

Alpina actually offered and build an E30 with the M30, gonna see if this link works for you....

http://www.alpina-archive.com/?page_...&nmt=3-series-[E30]

this link should bring you to a sight where you can see both the B6 2.8 and the B6 3.5 cars to get some ideas of what the cars did with a NA motor.

Another BM 04-29-2010 11:44 PM

decided none of those motors were not going to get me anywhere near the power i wanted to make...

So its gonna get a turbo.. hoping for 300whp :D

soo whos got parts laying around.

First think i need is the top end of a i motor.. who has one?

black bnr32 04-30-2010 09:14 PM

300whp? selling yourself short dude! 400 is incredibly easy and proven on a stock m/s5/2.

Another BM 04-30-2010 09:18 PM

Quote:

Originally Posted by black bnr32 (Post 1415621)
300whp? selling yourself short dude! 400 is incredibly easy and proven on a stock m/s5/2.

i've also read the same thing, but i wanna keep things "simple" and not have to motor swap.

gonna build up the m20

NOTORIOUS VR 04-30-2010 09:20 PM

^^^ glad you decided to go that way. Just remember that if you just swap to an "I" head (885 casting) with the E bottom end the compression will be pretty low, so matching a turbo will be ever so more important.

That said, it's been done many times and if you want to go that way do it! Just don't bother with chips and RRFPR's. Go standalone or if your willing talk to MarkD on here and get a tune the proper way and never look back.

Also check out e30tech.com.

Good luck!

SamE30e 04-30-2010 09:21 PM

Quote:

Originally Posted by black bnr32 (Post 1415621)
300whp? selling yourself short dude! 400 is incredibly easy and proven on a stock m/s5/2.

300hp is a realisitic reliable number on a M5x engine.

black bnr32 04-30-2010 09:31 PM

So is 500(with a .140 MLS of course).

OP: cool choice on the M20

NOTORIOUS VR 04-30-2010 09:34 PM

it basically comes down to being more cost effective using the M20 for the HP goals the OP has in mind.

And believe me anywhere between 300-400whp in an E30 is A LOT of fun.

SamE30e 04-30-2010 09:45 PM

Anywhere over 400hp is just retarded. Spin, shift, spin, shift, mis-shift, spin, spin, spin, spin 220, traction.

NOTORIOUS VR 04-30-2010 09:53 PM

Quote:

Originally Posted by SamE30e (Post 1415636)
Anywhere over 400hp is just retarded. Spin, shift, spin, shift, mis-shift, spin, spin, spin, spin 220, traction.

Nawwww, come one now!

My friend and I are planning on taking his E30 with a stock M20 to 500whp over the summer :) If we made a stock 2.5L make 400+whp, the 2.7L (SETA) will make 500whp (or at least close to it).

Stay tuned! :P

richie_s999 04-30-2010 10:04 PM

HP blah blah blah. build a motor with a torque line and then talk about fun. Sooooooo tired of HP numbers big bragged about I want to see the numbers that make the car move!!!!!


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