Ok guys, I bought a blaster that needed a new top end....long story short I decided to rebuild the whole top and bottom end. new crank, bearings, seals and new top end. I had to go out to 67.25mm bore. Wiseco piston. I lubed up everything really good. I'm almost certain I had the rings lined up in the notches like they should've been. After running some heat cycles I started getting piston slap. So I tore it back down. I took the jug and piston back in to my shop and he shipped it out to millennium technologies to have it checked. They got back with him and said the bore job by napa was perfect. While they were at it they rebored it out to 67.5. When I got everything back I got looking at the 67.25mm piston and looked at the rings. The top ring had no brownish coating on it like it did when I first installed it. the bottom ring still had the coating on it. I'm thinking that top ring didn't seat and it got past that notch in the piston to hold it in place. So anyhow I've currently got the jug installed along with the new piston, and I made positively sure the rings were in the correct spot. Can anyone here relate to this problem at all? anything else I should maybe look into? The piston to wall clearance was perfect from what the shop said.
Secondly when I do fire it up again. My setup is obviously wiseco piston. FMF powercore fatty pipe and silencer. K&N filter w/o airbox lid. I bought a dynojet kit. It's saying run a 360 on the 3rd clip down at 2 turns without their plastic spacer. Just out of curiosity has anyone ever used those kits and how reliable their jetting information is?
Any and all input is greatly appreciated.
Secondly when I do fire it up again. My setup is obviously wiseco piston. FMF powercore fatty pipe and silencer. K&N filter w/o airbox lid. I bought a dynojet kit. It's saying run a 360 on the 3rd clip down at 2 turns without their plastic spacer. Just out of curiosity has anyone ever used those kits and how reliable their jetting information is?
Any and all input is greatly appreciated.
