Doing my EV72 upgrade and found my clutch shell in the pic. Is it toast? What are the usual causes of this type of bluing in this area? Other than a very slight vib on decel which I believe has always been present the bike handles and runs the best ever.

Pinetop

 

If it was my bike, I wouldn't worry about it.

 

I'am with Dr hess on this one , that blue wont any thing

 

Quick agreement? Good because it is raining all week, the week I have off in three months. I WILL go thru the top end, hope to stop at the heads. I plan to bring them to the ex-service manager at a local harley dealership that opened a head and tuning shop in a nearby town.. Heard reports from track that he has the evo motor in his hands. We shall see. He will port heads and flow them until this stroker screams.