400ex jetting help!

[400exmatt]

i have a 01 ex, it has a 416 kit, uni filter, and i just bought a lrd pro 4 series slip on, now i need to rejet it, any suggetions would be appreciated, thanks.

[drew416ex]

probably around a 160 main and 40-42 pilot.

[red_rider_069]

hey what u recommend for mine.. cuz the one i put in isnt working very well.. i have k&n big bore just got full yoshimura carbon, g4 rev box and stage 2 cams.. any suggestions? sorr yfor stealin ya thread..

[drew416ex]

Originally posted by red_rider_069
hey what u recommend for mine.. cuz the one i put in isnt working very well.. i have k&n big bore just got full yoshimura carbon, g4 rev box and stage 2 cams.. any suggestions? sorr yfor stealin ya thread..

Whats the bore size and compression?

[red_rider_069]

Originally posted by drew416ex
Whats the bore size and compression? its a 440 wiseco with a namara sleeve and 12.5:1 compression.. and stage 2 magnum cams

[400exmatt]

what about the needle, and air/fuel?

[drew416ex]

Originally posted by 400exmatt
what about the needle, and air/fuel?

Move the e-clip down a notch on the needle (assuming its in the middle) and see how it does. If it feels a little sluggish between 1/4 and 3/4 go back to the middle position. Fuel screw should be around 2 1/2. If you go above 3 1/2 go up on the pilot, if it is below 1 1/2 go down on the pilot.

[drew416ex]

Originally posted by red_rider_069
its a 440 wiseco with a namara sleeve and 12.5:1 compression.. and stage 2 magnum cams

Its hard to say because i havent had this type of setup. Have you run it with this setup yet? How did it feel?

[red_rider_069]

i been riding it lately.. but it bogs out.. so idk what jets i need :) i been htinking about the jet kit.. but idk..

[AutoRoc]

170 main/38 pilot was in my 440ex with mods listed below. Ran flawless from idle to big rpm.