I have a 2002 Honda Rancher 350 Es that I just bought a big bore kit for and it has now arrived! It’s going in an extra engine that came with the atv which once had a big bore kit in it. The guy I bought it from didn’t like it for some reason so swapped the motor out with the one that is in it currently.

For this build I’m just replacing rings, piston, and gaskets since the sleeve that is in it, is one for the big bore kit, the 375. While doing that I’m also putting in a clutch kit before the motor goes back in.

What I am wondering is if anyone has any advice or has seen any walkthroughs for installing these kits. I plan on cleaning the motor out very well to make sure there is no debris in the motor for it to smoke afterwards.

Does anybody have any suggestions or things they would have done differently on theirs for when I build my motor tomorrow afternoon/night? Any suggestions would be appreciated!