this is my theory and it all started last night as i was tearing apart the shee, i think i have a bent or warped shift fork, anyways i'll find out. Back to my thoery, as i was removing the head last night i noticed that my left cylinder head looked like some sort of debris got caught and knicked up the cylinder head pretty good. The head is still functionable, but i was wondering about the little burrs the debris left on the head. Could that potentially create a hotspot and lead to detenation. This is just a shot in the dark but could i maybe file the surface smooth again, or should i be looking for a coolhead. thanks for the info.

 

Are the nicks on the outside of the head? ...I do not think it will cause a problem.

I bent my last set of pipes in a crash and one side made a good size rub mark on the head.. It still runs like it used with no overheating or anything like that.

 

i wish the knicks were on the outside, unfortunately they are in the inside (combustion chamber).

 

id say to just wait and see but riding on a bomb isnt easy, get it checked out, in the mean time i hear KIDDY makes a nice fire estinguisher.

 

My Freind had this happen to his Shee he just bought a New Head (Cool Head) I don't know if you already have an aftermarket one. It isn't worth it trying to clean up the old one.

 

why isnt it worth it???
my buddys yz250 head got smashed up when the needle bearings blew apart... he simply smoothed out the divits and put it back together... it runs great.