PDA

View Full Version : sorry guys...got a jetting question



Juggalo
05-07-2003, 10:27 AM
i have never really done any jetting before and i know how to do it but i don't really know what sizes to get. i just installed a hotcams stage 2 and a white brothers r-4 slip on and i'm running a uni filter with no airbox lid. any suggestion what what size jets i should buy when i go to the shop?

northeast400
05-07-2003, 02:35 PM
I would try a 160

AtvMxRider
05-07-2003, 02:41 PM
get a 150,155 and a 160 and also get a 42 pilot. Start with the 160 and see how it does.

Juggalo
05-07-2003, 03:19 PM
so a 160 main and a 41 pilot? what about the needle? move up a clip or whatever? any other suggestions?

AtvMxRider
05-07-2003, 03:25 PM
try moving the clip up one notch.

skemp
05-07-2003, 03:38 PM
I would try a 158 main, 42 pilot, and move the clip DOWN one notch, effectively raising the needle and richening the midrange. You should like the power increase, it's a big difference from stock. :)

MIKE400EX
05-07-2003, 03:39 PM
I think ATVMXRIDER meant to say move the clip down one notch (needle up a notch) to richen it up a little. JMO

Juggalo
05-10-2003, 11:51 AM
well i got a 158 main today. he didn't have any pilot jets tho. i went riding and my quad ran way better but when i pulled the plug it was still really lean. i don't remember if he moved the clip down but he did turn the air fuel screw a half turn. do you think if i go to a 160, get the pilot, and move the clip down (if its not already done) i will be good or do you think i should go higher than a 160?

AtvMxRider
05-10-2003, 01:06 PM
Originally posted by MIKE400EX
I think ATVMXRIDER meant to say move the clip down one notch (needle up a notch) to richen it up a little. JMO


Sorry yep thats what I meant.

05-10-2003, 02:32 PM
i would try 155 main and 45 pilot

Doibugu2
05-10-2003, 02:36 PM
just change one thing at a time, since you seem to have the jetting close. The rule of thumb seems to be, get it running good then move the main down one. But you might have it perfect on the main already.