Re: Question for seller -- Item #2432799904

> The blocking off of the vac. line or
> the lack of a vacuum advance came about mainly to prevent pinging when
> you backed off to partial throttle after
> a run in boost, when cylinder temps were
> still high and the engine hadn't "cooled
> down" yet.

Of course simply not utilizing the vacuum advance accomplishes this.
OTOH, not having the additional points of motion in the distributor at all
can make for a more stable spark, therefore the distributors with no
provision for vacuum advance.
David Lieb
1972 RWA Midget
2002 GTI for Trish to beat me at autocross with