I know a lot of ppl don't like to give jetting info in case someone burns down a motor on there suggestions but in the end it would be my decision and I would hold no one responsible or say it was ther fault. I looking for comments or info on jetting for a viper 780 big bore. Here is what I got. And where I am thinking on starting for jetting. Let me know what u guys think Thanks
viper 780 big bore
trail ported cylinders
trail ported cases
venom heads at 58 thousand squash
bender pipes
boysen reed cages
35 mm bored carbs
vent lines NOT hooked to airbox
was thinking about starting here
160 mains
55 pilot
needle at 4th position
2 turns out on air screws
viper 780 big bore
trail ported cylinders
trail ported cases
venom heads at 58 thousand squash
bender pipes
boysen reed cages
35 mm bored carbs
vent lines NOT hooked to airbox
was thinking about starting here
160 mains
55 pilot
needle at 4th position
2 turns out on air screws
Last edited: