Stop in for a cup of coffee

Exactly, Its made me think, but I have no idea



How do you know? I've asked that question many times and no one has been able to tell me? Other than starter kick back

I think you use a vacuum gauge to sweep the advance and see where it gets max vacuum... Then leave it there or back off a degree or two...

Maybe sweep the RPM range and see at what advance you get highest vacuum, then recurve the dizzy to match....