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Old 05-06-2009, 02:51 PM
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adjustable vacuum advance

can you explain to me why when you turn the set screw in the vacuum cannister counter clock wise it adds less advance and when you turn the screw clockwise it adds more advance? i picture it as when you tighten the screw it increases the spring tension and you need more vacuum to open it. right?

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Old 05-06-2009, 03:05 PM
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Yes, you are correct.
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Old 05-06-2009, 03:16 PM
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according to moroso and mr gasket you turn the screw counter clockwise for less advance and clockwise for more advance. doesnt make sense to me.
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Old 05-06-2009, 04:43 PM
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Screw is the stop when crank it out the vacuum advance can't travel as far.
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Old 05-06-2009, 04:54 PM
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so the screw has nothing to do with the spring?
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Old 05-06-2009, 11:10 PM
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Some dodges and maybe others screw adjust spring pressure
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