why are my jets bigger than everyone else? 02 650p napa#7335,nyroc muffler(6- 3/8 inch holes,no spark arrester ), 162r/158f jets(KEHIN), stock air filter, stock plugs. is it possible that the 2002 flat air filter flows better? my evel. is from 900 feet to 1200 feet. everyone that did the same mods AT THE SAME EVEL. have smaller jets, WHATS THE DIFFERENCE? my plugs are off white (white,light gray). i go down to 152f/155r and i lose my top end. is their more carb adjustments that im missing? i turned my pilots, shimed needles .033 thou.

IT RUNS GOOD, I JUST DONT UNDERSTAND WHY MY JETS ARE BIGGER
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02 650P
#7335 ON ORDER EPI BLACK SPRING
NYROC MUFFLER 700P DRIVE SPRING
158F/162R JETS ALL 5 BELT SHIMS
WARN 2000LB
PLOW

 

You did all the mods? Could someone have installed/modified the needles? Are they the stock profile? Those jets are REAL fat, for here in Ohio. Did the bike come from out west, the Rockies, or somewhere else high elev.?

 

I ran the 158/162 combo in my old 650 but it had bigger cams, HMF exhaust, airbox mod, Diamond G intake snorkel, and a few other mods. It ran great and it would run 68 mph all day long. The fastest I ever had it was 71mph right after all the mods and with a new belt.

 

i'm running 185-180 mains and its awsome would like to try even bigger when i get the chance

 

I DID ALL THE MODS. i bought it brand spanking new. top speed is 60 mph

 

p700 did you do the hose. or just remove the lid. arent you worried about water

 

deer choper heres the deal when i 1st bought it i noticed that when i would clean the filter that no water stains were on the lid or around so when i read about all the diferent mods i said why not take the lid off my yz 426 dosen't have a lid and its in a worse spot under the seat on a drag race with a stock p700 mine has 27's his 26's me weighing a 100lbs more i pull right away in 300yards equels10 lenghts hope that helps

 

Have you guy's seen the new K&N unit that replaces the filterbox cover completely... I doubt if its available yet ( or ever will be, for trhe Prairie ), but you completey block off the stock snorkle, & replace the cover with a filter ???