Quote:
Originally posted by red82gt
0 at idle, goes up cruising at 2000 and a little more as you go up in cruise rpm. Put the throttle down a bit and the vacuum will drop to 3-4" meaning it's dropped some of the advance, go to WOT and it's at about 1", go ahead and try it.
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yep ... now let the RPM come up and watch it go back up again ... its load dependent, its affected by both throttle position and RPM. Either way, whatever vaccum advance you have is added to the mechanical advance you have which is added to the initial advance, so you can't just discount vaccum advance. Well you can but you're gonna end up with more advance than you bargined for
