1988 Yamaha Warrior piston problem

[woden_88]

which piston would you go with, a wiseco 84mm 10:1 compression or a je 85mm 12;1 compression. i ride on all types of terrain and my bud are all on 450r"s i know there is no comperison but i dont want to look stupid tyring to keep up. would i have to get a bigger sleeve if i went with the 85mm?

[jokerjester303]

if you go to 12:1 high compression you will need to run race fuel

[woden_88]

i normally run aircraft fuel anyways. its expensive but makes an atv run like a cat with its tall on fire:yes:( no offense PETA)

[DirtDemon]

Check out this site, if you want to try and keep up with your friends, it will take alot of work, but these guys can help you not fall too far behind. For $830, you can get a whole new worked over top end, they will even install the new cam and set the valve lash, when you get it all you will need to do is bolt it on. You will probably need a good aftermarket exhuast and a bigger carb to go with it, you will probably be into it for $1000 plus. If you just want to do the piston, they can do that for you too, they will bore & hone the cylinder, and send you the piston and a top end gasket set for $270. There are also several other kits for your Warrior, check them out and see what fits in your budget.

Yamaha Warrior performance kit.