I'll try to consolidate the outstanding questions, without adding to the confusion.
I don't think people know which part your refer to as "governor". The "9R" numbers sound like what is usually stamped on the vacuum pod arm, but you say "no marks" on yours.
he is referring to the piece that has slots in it that control the amount of added advance the weights can give.
The vacuum advance and mechanical advance add together, so isn't an either/or situation. The vacuum advance gives more spark advance at low vacuum (near idle), up to ~15 crank degrees. When you open the throttle vacuum drops and the vacuum advance contribution disappears. This helps avoid pinging.
slants came with a number of different governors and pods over the years
I never played with tuning the weights. People change springs, weights, file the slots, weld stops in the slots, etc. You could spend a lifetime fooling with that, especially on a factory distributor where getting at the weights is a bi** and removing the distributor on a slant is a messy bi**, especially if the spark plug "drool tubes" leak. I would rather type a number in the computer and be done with it, which is my longer-term goal.[/QUOTE]
no need to play with weights on these, if he would just put it together he could see how it runs, ive listed atleast twice a good starting curve for him.
