where to start, jetting 28 pwk's

[IROOST1]

i am switching to 28 pwks on one of my banshee's and want to know a baseline jetting to start at.

 

vitos pistons

stock porting

coolhead, 19 domes

alum airbox, no lid

k&n filter

boost bottle

fmf gold series pipes

110 race gas, 50:1 amsoil

 

800 ft above sea level

75-80 degrees about

[burleybanshee]

I would put a 52 pilot and a 152 main. Probably end up with a 150 main with stock porting, but 152 should be safe with those mods you have.

[5150banshee]

I would put a 52 pilot and a 152 main. Probably end up with a 150 main with stock porting, but 152 should be safe with those mods you have.

 

152 seems kinda small i would start with a 152 but maybe go up 1 or even 2.

[IROOST1]

that seems rich on the pilot and lean on the main. i ordered a variety so i have 45-52 pilots and 142-172 mains. i was thinking 48 pilots and 160 mains but ill try the 52 and 152.

[burleybanshee]

The 28pwk and their clone 30mm oko, that I have, need bigger pilots than the bigger pwk's do. I am running a 58 pilot in my 4mil long rod and a 162 main. Had a 55 pilot and the low end was real crisp and the sniffer on the dyno told me it was a little lean, 58 was perfect after i played with the needle. That is also at about 70 degrees at 400 foot elevation.

[Rock-46]

I'm running 48 pilot and 158 mains on mine.

 

Milled head

Dune Port

T5's

K&N pods, etc.

[locogato11283]

45 pilot and 160 main. that should get you really close. all the pwk carbs jet almost the same. ive run 33-39 and always used the same pilot (45) and 158 to 162 main. im about 1000 feet above sea level and 70 - 80 degrees.