Quote:
Originally Posted by moldcad
- stock M235i actually having any hardware mods to its N55 engine (forged crankshaft legend is as old as the car itself, but I've never seen any hard facts confirming it)
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From the F22 Complete vehicle training manual:
Quote:
In case of the M235i the regular inline 6-cylinder TwinPower Turbo engine was even further
enhance by BMW M Division. Specific enhancements in hardware (e.g. crankshaft)
and software (e.g. dynamic mapping) contribute significantly to the outstanding performance
of the M235i.
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If you take the time to look at part numbers you will find the F22 M235i has a unique crankshaft (11212334334) AND piston (11258619196) part numbers compared to ANY other N55 (E90, F30, E70, F15, F10, F25, etc..).
Standard N55 crank-11212163665, piston-11257624409
Since BMW makes a spec M235i Race the forged crank is possibly meant for homologation standards. Or since it is a 'M' inspired enthusiast car, that BMW realized would see a lot of track time from owners, BMW wanted the best parts installed for durability purposes.