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Probably closer to 270hp at crank. (archive)
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Posted by Mark W on December 15, 2001 at 09:38:39:

In Reply to: Nothing but good to say about MM posted by Mark Chesnutt on December 14, 2001 at 11:28:56:

We've been over this on the E28 board forever. There is no way to get 300+HP out of a normally aspirated M30 motor and still drive it as an everyday car. Jim has always overestimated the HP out of his engines. It is a known fact.

After saying all of that, the engines of the MM rebuilds are fantastic engines with a lot of torque were you need it. And I can't say how much I love the Ultimate Transmission that I have in my M535i.

Mark W
'85 M535i

My experience with Jim Rowe at Metric Mechanic has been absolutely great. He's well informed and willing to share his knowledge with anyone. Just call him. Gosh, he answers the phone most of the time and always has time to talk about motors and transmissions. Personally, I have a Metric Mechanic 3900 Hi-Flo Sport motor. Mine is built on an M crank with a 95mm bore and a 90mm stroke. I've also got the 12 lb. flywheel and his Ultimate Transmission. Couple all that to his System 300 exhaust and 50mm euro downpipes, and a cold air intake box. Likely 300 hp, or thereabouts. Smoth idle, monstorous torque and hits redline in a jiffy. So far, I've seen 142 mph as I shifted out of 4th gear at redline. What else can I say. I'm completely pleased.




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