My Posts: All Forum Topic
Nope, I know front from back...After a lot of messing around, both bearings have a little bit of roughness, very little. When I hold the front bearing in my hand and spin the crank, it's a little rough, but quite. When I put the rear bearing in my hand and spin the crank, it feels about the same, but does make considerably more noise. I'm thinking that once it gets up to operating temp, it gets worse. Also I think I caught it, before it went completely out. I run the JK pipe which is very quite, and I was the only person at the field, so it was very quite. Whichever bearing, or both is bad, it allowed the crank to make light contact with the rotary valve ( crank valve ) part of the case. I have re-polished both of these surfaces, and I'm sure they'll be fine. This is a very close fit, and if either bearing allows the crank to go even slightly off center, there will be contact. Anyway, it’s getting two new ceramic bearings, new ring, and new gaskets.