2001 raptor highcomp. piston jetting?

im redoing a 2001 raptor that s**t the trans. and the kid who owens the quad wants a high comp. piston and a low to mid cam. hes got a k&n with outerwaer and a lrd full system and five filter plugs in the top of the air box. he rides at sea level most of the time. how should i jet the carb??? and what should the valve lash be with the bigger cam???:confused:

[Zero Z400]

You should jet it very carefully. Don't ask how to jet, jetting varies to much, just go up in jet sizes till it skips then go down one.


Later

[velociraptor]

First off you need to relize the Raptor has TWO carbs. I would personallly buy jets ranging from 170 - 200 in 5 point incremants or maybe 2 points.Jetting is trial and error it takes time. I would start with 170-175 ane remember you need to increase the pilot jets also try 27.5 or maybe even 30's. Also he should probabley run race gas with a high compression piston.:devil

[Zero Z400]

Depending on what the comp. ratio is what will determine if he has to run race gas. 11.1 means you need race gas, but thats on a AIR-cooled. The crapturd is liquid so u can run a high comp. w/out race gas.


Later