Quote:
Originally Posted by 36tbird
Yeah, I bought one so I know how they are adjusted but I have not installed it yet. I wrongly assumed that the adjustment had something to do with the sensitivity of the diaphragm. You are stating that the adjustment changes the length of throw to impact the amount of advance available. I know how mechanical and vacuum advances work in distributors but I did not know what the vacuum adjustment actually changed.
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You are correct and so is Richard
From accel catalog:
These ACCEL adjustable vacuum advance canisters for GM points V8 are designed to give you instant horsepower and throttle response. ACCEL adjustable vacuum advance chambers for GM points V8 permit infinite adjustment to both the amount and rate of advance. The advance chambers include an adjustment wrench and an instruction guide. To optimize your engine's timing curve, you need ACCEL adjustable vacuum advance chambers for GM points V8.
The rate of advance and the amount is changed at the same time....