Nissan experts. My ga16de in a 91 sentra has a casting id m2 on the front face i know that with the a series engines that it mea

morrisman1, Jan 3, 9:33am
My GA16DE in a 91 sentra has a casting ID "M2" on the front face. I know that with the A series engines that it meant it had a lightweight crankshaft and were more special engines than the other castings. I was wondering (and hoping) that this was a trend. Can anyone shed some light on this!