My Combo, Manifold Or Ported VAC Advance, We'll See...
Above [ post #43 ] is the last thing you want; trying to gauge the idle vacuum to pull the VA plunger far enough. That is a recipe for disaster, a rough varying idle that has a mind of it's own.
The correct procedure: you set the Allen Key in the VA so that the plunger pulls in firmly without a hint of movement [ timing is steady, stable ]. THEN, if you want to reduce the total amount of VA added, you need to make a stop to limit plunger travel. The guy below is across the pond from you Sam, but he 'gets' it.
This is called hot-rodding......
Above [ post #43 ] is the last thing you want; trying to gauge the idle vacuum to pull the VA plunger far enough. That is a recipe for disaster, a rough varying idle that has a mind of it's own.
The correct procedure: you set the Allen Key in the VA so that the plunger pulls in firmly without a hint of movement [ timing is steady, stable ]. THEN, if you want to reduce the total amount of VA added, you need to make a stop to limit plunger travel. The guy below is across the pond from you Sam, but he 'gets' it.
This is called hot-rodding......