Hi everbody,
I need some help with jettign sizes. I was wondering if anyone else has this same setup, im running a yoshi comp slip-on, k&n high flow filter w/airbox and lid on with stock jetting and its running alright but i have not bottom end. Now im gonna be putting in a stage 1 hot cams unless someone can convince me theres better for the price without going to race grind and i need to know what size jets to go up to even get me in the ball park. My current settings are all stock jets mixture out i believe 3 turns out from full seat and 3rd clip on the needle and i live about 30 minutes out from boston sorry i dont know the exact sea level hieght.
thanks, chris

 

Judging from your picture I'm guessing a raptor 660, although you could be describing a warrior as well.

If you're already 3 turns out on your fuel scres you may want to bump to a 25 pilot and down to 1.5 turns out. As for mains a 150/155 or 155/160 setup should run well. Your stock needles should work on the 3rd clip.

 

Hi
sorry about that yeah it is a 2003 660. are those size in dyno or mikuni.

 

Mikuni main sizes.