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What are the differences in E28 S38 and E34 S38?? (archive)
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Posted by JamesM on February 07, 2001 at 09:52:32:

What are the primary differences between the 1988 S38 and 1989-1992 E34 S38? I know the intkae plenum looks different, but what about cams, valves, crank, bore, stroke, compression, etc. I've seen Eric Christie's webpage on his Euro 3.8L M5 rebuild fiasco, and I noticed that the dreaded crank hub has been replaced by a newer design. It is held on with 4 very large bolts, so loosening/bearking from vibration is eliminated. Is this common to all E34 M5 engines, US and Euro? It would be a nice upgrade for E28 M5 owners--install an E34 M5 engine, or install just the crank/pistons if the blocks are close enough.

Anyone know?

Thanks!
James
james_535@yahoo.com
88 M5
88 M3
83 535i

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