Quote:
Originally Posted by xxxJohnBoyxxx  M44 head is a exact fit on the M42 block, There are advantages and dis-advantages. M42 head does not use rocker arms (I think) which is a plus by lightning the valve train. M42 head also uses larger head studs. M44 head uses the cam sensor so it can use full OBD-II function of the DME, M44 head can accept M3 head bolts which need to be shaved a little so they don't bottom out in the block before reaching full torque spec. |
i just looked up, and yeah. you are right. the m44 head uses rockers and the m42 head does not. interesting.......