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      09-15-2012, 02:11 PM   #209
Tåst
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Drives: BMW, I think.
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Quote:
Originally Posted by Boss330 View Post
Even though a purpose built M engine is more romantic than a tuned standard engine, M history shows that more often than not the M engine is based on a production engine:

http://en.wikipedia.org/wiki/BMW_M62#S62

http://en.wikipedia.org/wiki/BMW_S14

http://en.wikipedia.org/wiki/BMW_M50#S50

http://en.wikipedia.org/wiki/BMW_S54B32#S54
Actually at least S50, S52 and S54 engines are pretty different than M50-based M52 and M54. S-series didn´t share same block, crank, pistons, head, intake manifold etc. You can check it in Realoem.com.
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