In Reply to: Re: 97 M3 Engine in an a e30 M3?? Possible?? posted by Rob on May 04, 2000 at 17:32:26:
: : I wouldn't do it. I've ranted about this many times in the past when people have ask the same question. To start, That is E30 M3 sacrilege!! All that extra weight over the front wheels can't be good, plus the extra two cylinders means that the engine will be even further forward in the car. If horsepower is all you are concerned about this is probably the way to go, but the strongest point of the E30 M3 is its handling, and cramming the 6 in there is going to hurt the cars handling. Active Autowerk has a turbo charged S14 that puts out 1,100 HP, so the engine has plenty of potential. The s14 is essentially a formula 2 motor, one could even go so far as to say that it is very close to BMW's formula 1 engine. My M3 does 0-60 in the high four second range, with stock US gears. I have a 2.6L Dinan engine that puts out 292 HP and Dinan stage III suspension. Its enough to make Ferrari and Porsche owners hate you. With a 2.5L conversion and Turner Motorsports stage III head they claim 280 HP. I would say that this is the best route to go it will give you the performance you desire at a reasonable price. There are plenty of people out there who have put E36 M3 engines in there cars, but none of the serious racers have, that alone says a lot to me. I was just driving around in a 99 E36 M3 today, and I would rather drive the E30 anytime. I like the S14 engine much more the US spec E36 M3 engine is just a glorified 325 engine (as is the car itself). These are just my opinions, in the end I'm sure you'll to whatever you feel is right for you. Good luck.
: : Brian
: : : I am curious if anybody have done this conversion and what are your opinions on doing the swap? I can get a great deal on a '97 E36 M3 3.2 Inline-6. -Mike
: Uh, 1100hp? THat's more than the Brabham F1 motors that the S14 is based on and those F1 motors run on ultra high octane race gas plus about 30-35lbs of boost. I'm guessing the original poster is looking for something one can drive on the street. I know of 2 280hp 2.5L M3's that are barely streetable (although fast). Secondly, the aluminum S52 is actually 6 lbs lighter than the iron block S14.
: As I remember, there's a guy (Pete McHenry?) that has a kit that has all the brackets and instructions on S50 conversion (actually uses an S50 motor with an S52 crank for 3.2L without OBC2 for around 260hp). Then there's Zionsville Autosport who sells kits as well.