Hi 1330,
I understand that completely my example was say if you are just cruising
on the road with all the mechanical in and the vacuum in too and you
hit a hill or overtake you step on the gas and the VA goes away to keep
the timing safe.
Some people think the vacuum advance is for power - there is so much
about ignition I don't know I could write a book. ;)
Jon
On 6/14/2013 10:09 AM, WeslakeMonza1330@aol.com wrote:
> Not exactly.
> When you step on the gas the vacuum advance doesn't advance the
> ignition. However, as the revs increase the centrifugal advance in
> the distributor advances the ignition and by a lot more than the
> vacuum advance can manage (though I'd have to check that, though both
> can vary).
> Too much ignition advance can lead to engine failure which is why the
> static advance is best set on a rolling road on a modified engine as
> too much advance can instantly be seen as a drop in power.
> In a message dated 13/06/2013 22:36:34 GMT Daylight Time,
> jpaschke@bak.rr.com writes:
>
> When you step on the gas
> the vacuum goes away and retards the timing to keep the motor safe.
> Racers don't use a vacuum advance as they have no use for good
> mileage
> and to much advance kills motors.
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