jetting with boyesen

[red 84 kdx]

anyone have any comments or experiences with carb jetting after installing boyesen power reeds on a 2000 kdx 220R.some say leave it alone some say downsize the main and clip.already running a fmf gnarly with a frp torque spacer at stock jetting.

 

[jaguar]

don't go by what anyone says, just jet the bike according to what it wants. get different jets and "play" with it. You'll find that sweet spot where it runs the best.

 

[Mrobbins]

Jaguar is right to find the right jetting for YOUR bike.

Just for point of reference, I just put in power reeds on a 97 220 that had an FMF Rev pipe and TCII, no air box lid, and ridden at sea level. Kept the 145 main and dropped the pilot from a 42 to 40 it is cleaned up nicely. YMMV

 

[est142]

also 97 220 with 2stage boyesen reeds. running 40/145. stock needle 2nd clip down from top.air screw 1 1/4 turns out.dropped down from 45/190 (no ...not my idea of jetting-the bone head who owned the bike before me put those in). pc pipe,air box lid mod, at sea level. southern NH. i went down two pilot sizes because i was already a little rich on that circuit. flawless everywhere, except for the 0 to 1/16 throttle above idle. it needs just that tiny area to clear out before it becomes electric motor like in uniformity. but hey...it is a two stroke after all!!