Whats up fellas, i just bought a 01 shee that has had some issues. Coolant dumping into the cylinder. Put new orings in the cool head and stopped the coolant leak. Found it had 68mm pistons and a trinity cool head with 20cc domes. And what apears to be a cub style jug. So i put it back together and did a compression test. It had 125psi in the left cylinder and 120 in the right cylinder. So i took it for 2 15min rides and still just didnt seem right. Somebody told me to do a compression test when the motor was warm, so 1 day later i warmed up the motor and did a compression test and the left cylinder was 120psi and the right was 95psi. So i tore it down to find the piston starting what apreared to be melting. I found a cracked reed which was the route of the evil, but the 2 to 1 carb set probably did help either. So i took the jug to get re honed and i need new pistons.
On the top of the pistons it sais
7009G
9768M
68 00MM
Here is a pic of it
I havent found much on it. I Dont know what crank or rods r in it. I found 29l on 1 side of the rod and a r on the other side but from looking around that looks like a stock rod. As for the crank im lost. I also dont wanna tear it apart to just see what crank is in it. If you have any advice i appreciate it
Thanks Joe