Autopsy

Hi,

Yesterday i have opened up the top end of my YZ, after months of possessing it. The condition is quite bad, and first thing that i hate the most of a bike when their screws are al screwed up! A nut here, a bolt there, a rusted f*cked up screw.. thats all gonna make a simple job take hours and hours. I will replace all the shit with new one, or maybe re-use some of the original and and get it zinc'd first.

I have taken a couple of pic but my laptop couldn't detect it. i will post the pic when that problem solved.

the piston looks OK, the rings are somehow seems "stretched".
the cylinder is fuc*ed up,it has been re-sleeved, but nowhere near perfection. missing ports here and there. the bore are also seems loose for the piston,no wonder it was hard to start it.
the cylinder head has also shows signs of detonation. Damn.
Power valve..i cant pull them out or now, looks very similar with my TZM, drum type.