Big Time Poster
M3 engine into an E34?
I can get my hands on a '98 M3 engine with Transmission, ECU, EWS, KEY & Ignition, Exterior Harness, Alternator, A/C Pump, Power Steering Pump and Starter. Can this be installed into an E34 without too much difficulty?
5-10 Grand Master
drop the engine in with your harness computer and accessorys, you could use your tranny too, theres a couple small differences like you need to drill and tap a 2nd coolant sensor hole in the head and if the timing cover doesn't have the crank sensor mount (they usually do) you need to swap the cover
all america wants is cold beer warm cat and a place to take a poop with a door on it
Major Contributor
Yeah, OBD-II needs to be converted to OBD-I.
There are quite a few OBD-I E36 guys who swapped in S52s.
Atlanta, GA/Bloomington, IN, USA
Big, Big Time Poster
ive wanted to do this for a while, it only works this easy if you have a 525i m50 tu to start with, like I do. Doesnt the s52 rev to like 8k rpm?? our tach would be maxed. You dont even need to tap another coolant temp sensor either, there is a harness made that splits the signal from the one. Use the headers from your m50 or weld up the passages on the obd2 headers and get some 02 sensor plugs and youll be good to go. use your intake too, everything thats on your car now but the s52 longblock and the chip should do it.
Major Contributor
I have seen E34 with an M3 engine. I'm not sure if it was S50 or S52 (3.0 or 3.2)... My M3 has a S54 engine and revs pass 8k, I think 8300 r.p.m. It seemed to have a lot of torque for I6 engine. It's not a V8 but it sure do feel like it.
RICK
BMW 1995 525i (Alpine White)
5-10 Grand Master
the e46 m3 engine is a completely different beast, it's a thinly disguised race motor where the us s50/52 are just poked and stroked m50s with hotter cams
Originally Posted by Rick L
I have seen E34 with an M3 engine. I'm not sure if it was S50 or S52 (3.0 or 3.2)... My M3 has a S54 engine and revs pass 8k, I think 8300 r.p.m. It seemed to have a lot of torque for I6 engine. It's not a V8 but it sure do feel like it.
all america wants is cold beer warm cat and a place to take a poop with a door on it
5-10 Grand Master
I hate the S54
Major Contributor
will the auto tranny manage the extra power?
assuming you have a slushie..... going from 190ish to 230-240ish...
1993 / 525ia / M50TU / EAT / Sachs / Infiniti Kappa & Basslink / super clean / Style 5s wearing Pilots / Mobil 1 everywhere / long road ahead
5-10 Grand Master
should hang on depending on level of abuse
all america wants is cold beer warm cat and a place to take a poop with a door on it
Major Contributor
Supercharged s50 in Sheila's '93 525i
1988 M3 - Track rat
1989 325iC
1995 530iM
2000 323iT - UUC BBK, PSS9 Coilovers
2005 GMC HD Crew
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