User talk:Peerke 55

BMW S54
What happened to the magnesium alloy crankcase as a base for the straigh-six petrol engines of BMW. At the germancarfan-site I noticed a new turbo-charged 3 liter straight-six with an alluminum crankcase (I guess, again with cast iron cilinder liners). All I read on this site is about alluminum crankcases and cast iron liners, is the magnesium version allready out of production (which I don't mind at all)? Might this be caused by cracks in the upper part of the cilinder due to high pressures, or maybe the engines blew up frequently due to the weakness of the magnesium?