[chassis]

Originally Posted by KevinC

S54 was iron block. Last seen in 2008 Z4 M Coupe. E46 M3 and Z3M prior to that.

Thanks. Looks like the contemporary M54 had aluminum block with iron liners and the successor N52 had an Mg block with Alusil liners.

Any bore scoring stories with the M54 or S54?