Performance timing

crackedback said
What RPM... when it's DONE advancing. ANYONE that tells you to set total timing at a certain RPM has no idea what is actually in the curve for springs. See that "it kept advancing to 4600..." comment. That's the issue there.

I NEVER said hook up the vacuum advance. Just that after you are done with the first two pieces, the vacuum advance will add at cruise. All this tune up stuff should be done with the vac can disconnected and the port at carb plugged.

I run it on ported and the can SHOULD NOT be active at idle... PERIOD!!!

Set initial FIRST, then get the total adjusted/limited, then worry about vac advance. One STEP at a time. The engine will TELL you where it's happy.

^^What he said..........and if you are squeemish about blipping the throttle with all that hardware thrashing around, then check the timing with the engine not fully warm, and temporarily unhook the fan belt just long enough to set and check the high RPM timing. then point the light down there, get "the picture" and blip the throttle to make sure it IS THE END of the advance