Has anyone ever modded this engine? Is it worth while?
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Originally posted by dkwhat about the exhaust manifold? same flanges as an i head?
Don't forget the good things Hitler did.
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Originally posted by E30godzis there another 81mm crank that is forged that fits M20's, and is somehow better? if not, then it isn't obsolete.
people may want an 81mm stroke over the 89+ stroke for whatever reason
The cars with 81mm stroke don't pull near as hard as those with 85+.
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Originally posted by Stu McThe only worthwhile part on the M21 was the crankshaft, because of the 81mm stroke and because it is forged. It is now obsolete since we have up to 89.6mm forged cranks available that fit M20's.Euro M3'87 NogaroSilver/Euro E34 M5 '93/Porsche 993 TT 97' Euro/Porsche 993 Carrera 95' Euro/Skyline R33 GT-R
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Originally posted by diegom6Originally posted by Stu McThe only worthwhile part on the M21 was the crankshaft, because of the 81mm stroke and because it is forged. It is now obsolete since we have up to 89.6mm forged cranks available that fit M20's.
'96-'99 M3 = 89.66mm
'96-'99 328 = 84mm
all forged
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Originally posted by E30godzsuper steamy high revs dawg.
With 2-valve curtain area and a timing-belt----nope.
You can build street M20's in stroker form, whether it's a 2.7, 2.8 or 3.0+, and it will have the midrange, with a cam and tuning it will make some top end, but let's leave the serious revver's to the 24v's.
I've driven 3.0 M20's and 2.8's. The 3.0's come on quite a bit earlier, but both run out of steam.
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