<VV> Vacuum Advance? Re: custom distributor curve?

kenpepke at juno.com kenpepke at juno.com
Sat Feb 23 00:29:40 EST 2013

Now you are separating the fly specks from the pepper.  Or you saying the prime function of that part is not to momentarily retard the timing from the normal run position?

Ken P


This doesn't sound right. The VA simply removes the spark advance that IT PROVIDED when the throttle is opened significantly. To call this a retard is a play on words as I see it. It is still correctly called a vacuum advance unit.
Bob Helt
In a message dated 2/22/2013 8:51:20 P.M. US Mountain Standard Time, kenpepke at juno.com writes:
Has anyone yet realized the term 'vacuum advance' is a misnomer?  In fact, that thing with the vacuum line that is hanging on the side of the distributor momentarily RETARDS the timing when the throttle is opened to give the extra fuel from the accelerator pump time to get to the cylinders.  

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