Thread: my understanding of mechanical advance & vacuum advance, tell me i'm wrong
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Old 08-08-2009, 04:31 PM
Excaliber Excaliber is offline
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Is this an MSD distributor? If so a black bushing typically stops the advance at 18 degrees, not 20. Strange that no bushing is apparently installed. Without it you have no way of limiting or adjust max advance.

Total cruise advance with vacuum is around 50 degrees, I wouldn't let it go higher than that under any conditions, by the way...
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