Quote:
Originally Posted by XutvJet
All 2 series M235s and N55 M2s have electronic wastegates (EWGs). Save for a few oddball BMWs like the X3, all 2014+ N55s are EWG. ALL EWG N55s use the S55 rod bearings and S55 forged connecting rods. Or you could look at as all S55s use 2014+ EWGs N55 rod bearings and connecting rods.
The pre-2014 N55s had pneumatic wastegates and weaker rod bearings that were somewhat prone to spinning.
The only N55s to use forged cranks are the N55s found in the M235 and M2.
All this information is gathered from RealOEM.
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M235i vs 2011 335i which has pneumatic waste gate
Realoem shows identical parts except for the crank. Rod and piston are identical!!
Click on any of the M235i bearings and you will see how many cars they are used on!