660 raptor upgrades ??

[dustrunner]

hi every1. i have a 2001 yamaha 660 raptor that needs transmission work and while i had it apart i was going to put a higher compression piston in it like a 11 :1 but with all the problems the starters and starter clutchs have without the extra compression i am worried ??

[Dirtcrasher]

You should be worried, it isn't a trike......

Post in the quad forum with your extra wheel please :D

[atc007]

The mods will move this to quad central for you. It's at the bottom of the page. Yep,trannies are weak,and one way bearings are total garbage on these. Go with a higher comp piston. And whatever else mods you want.Then put a L&A starter clutch in it. They are guaranteed for life and Top notch. They work! Welcome! and what Lake are you nearest?

[legacy51]

Haven't had any problems like that with my high comp piston. While you have it apart you might want to get a better rod because the stock ones can't handle very much power.

[dustrunner]

sorry, thanks seneca lake.

[atc007]

We come up to the Glen in the summer. Nice area. Raptors aren't too bad if built right. Very easy to get too fast for the stock chassis!!