.... there are too many degrees between base and "all in".... so when it sets at idle and runs and starts good, it pings terrible... when I adjust it so it doesnt ping, it idles rough due to the initial timiong being set too low...
What if the idle mixture is to lean? Perhaps this is what is demanding so much initial advance . . .
the specs on the engine I have (gm 181ci) state 8BTDC, and it runs great there... its the EST distributor that wont allow me to have 8BTDC without it being too much advance at 3000rpm... OR, when timing it to 24BTDC @3000rpm, when it returns to an idle, the timing is setting at 0TDC, which is not enough to allow the engine to idle smoothly....
as I cant find timing specs on the GM 153 engine. I have a damaged mechanical distributor from an old 153 that I have taken in to the speed shop to have it repaired and set up to the specs needed for my 181 engine... they use the same distributor but im not sure the advance curve is the same for both engines.. I will know which direction I go from here by friday afternoon...
ive got an
