Re: Re: Rotax Jetting QuestionsHome › Forums › New to Karting › Rotax Jetting Questions › Re: Re: Rotax Jetting Questions June 2, 2008 at 3:38 pm #61622 cgordonParticipantI race a Spec Shifter now, but I raced Rotax for several seasons. For IMI, 13/78 is a good starting point.Charles
