> i have my 139qmb standard jet to be around 75-80, i have an open air polini filter from pedparts and a stage 6 exhaust , i was just wondering what jet you guys would reccomend to be right, i was thinking 85 ? - 90 ? any help would be nice
With an open filter I would seriously start at 145 with a 28 mm carb - and work down by fives. What size carb are you using ?
what about as 88 jet ? like i see most people using, i want to get 1 jet, so what one would you reccomend for optimum performance ?
Typh Josh is dead right. You need a box from about 130 to 100 for an open filter. It could be about 110 but it would be suicide to just choose one on heresay. What's more expensive - a box of jets or a new piston/cylinder ?
Do you know anybody with an open filter who isn't into triple figures ? I may be erring on the big side - and I shouldn't have even started bandying figures around because the simple answer is I do not know what jet he needs. But i would start with about 120 and work down by fives. And I bet the right one will be in the early hundreds.
what if i go back into the stock air box, can i keep the same jet and will it run better ? or will i have to go a bit bigger still ? what jet would you reccomend then ?
if you go back to standard air box(i recommend) and keep your exhaust i would upjet by atleast 10%, but this can vary.
well the airbox is only 22 pound and im getting a few other things like a crankcase breather kit and a motorforce racing cooling fan and i think that will be everything
fiited the cooling fan changed the oil and fitted the crankcase breather , but pedparts sent the worng jet!!! right size 88 but wrong size thread and for wrong carb !!! hopefully getting new one on monday
