Thanks, but yeah i figured that when the cylinder was coated,that they couldn't be bored. In my first post i asked if the cylinders were like the ole mercury motors that had chrome lined cylinders and couldn't be bored out, they had to be resleeved. And when he said Those cylinders were bored and coated, i misread it and my mind started going different directions and i was thinking,if it was bored ,why couldn't it be done. But he was saying that the cylinder was made then coated. But anyway, I'm going to order a top end rebuild kit from rev6 and rebuild it. I checked with my Polaris shop and they said they didn't have an oem kit that i would have to piece it together and when we added it all up it was around 2100. So i told them i would order a kit off line. Then he said he found a kit from Armor tech,made here in AR. That was 875. Dallors. It came with the valve seats and everything the other kit has including the new cylinders, but i don't know much about it and its not coated in anyway that i know of. And the valve seats aren't upgraded. And the kit from rev6 has coated pistons and rings and upgraded valve seats and is only 908. Dallors. Im not going to rebuild it with more performance in mind, im just going to go back stock with better valve seats and rings. It isnt mine. It belongs to a guide at a duck club. And this is the third time its blown up. He had the motor replaced the first time,and the second,had it rebuilt and then rode it for an hour,and it started smoking and loosing power and then noticed the air box wasn't hooked up. The guy that rebuilt it, said he wouldn't do something like that, so he heard of me through a friend and here we go. Ive rebuilt several engines and several motor cycle engines and lawnmowers and have worked on a couple of rangers but never messed with a rebuild on one. But it looks about like my Toyota motor, and i know alot about them,so i should be ok. Just stuff like torque specs and stuff i could get out of a manual and so could definitely use one. He has alot of smoke and oil in both cylinders,so i bet the valve seats are bad also. That seems to be a common problem with these.