Yeah, that 11M head is mine. It came on that engine I got in the '83 B11. I highly suspect the block was a JDM E15. The head says 11M on the front in the standard place, and in the middle of the inside of the head, just under the camshaft, it also says 11M. This block had notched pistons to clear the valves, I kinda expected it to say 15M when I cleared the grease off the front casting number. heh.. Was 11M a special japanese casting? If it was, is there anything special about it that I might want? IE, is it better than a 33M?
I have my freshly rebuilt 33M head on that engine for the time being.
Gotta love a good mystery.
