Hey, I remember a while back someone asking what the differences were between the sx and es motors, well over the weekend I found out one major different..... the crankshaft is a different size.
The SX crank is BIGGER than the ES crank.
I was trying to put my SX clutches on an ES bottom end and no go.... I had to get an ES clutch to put on it....
Thought I would let you all know.....