figuring out advance timing
IF that's MAP on the left side, and my conversions are ballpark correct, then additional advance for lean burning mixtures should be possible in the range of the lower box. Definately no vac advance below 5"Hg, possibly not any below 11"Hg.
For example, lets say you want to experiment by start at 50 * BTDC at highway cruise. So where I wrote "Full vacuum" add 15 degrees to the base timing on the table.
And note there is no vac advance at idle rpms.
IF that's MAP on the left side, and my conversions are ballpark correct, then additional advance for lean burning mixtures should be possible in the range of the lower box. Definately no vac advance below 5"Hg, possibly not any below 11"Hg.
For example, lets say you want to experiment by start at 50 * BTDC at highway cruise. So where I wrote "Full vacuum" add 15 degrees to the base timing on the table.
And note there is no vac advance at idle rpms.