Jetting For A Big Bore Kit????

[CWDHUNTER]

sorry its about a snowmobile, but I need help.

whats the rule of thumb for a big bore kit, i am going from a 650cc to a 790cc. i was planning to run 1 size richer on everything. am I on the right track? Thanks.

 

[Rich Rohrich]

There are too many variables to have a rule of thumb that works. Starting richer is a smart move.