Distributor question...

[JShadzi at aol.com]

The Vacuum Advance cannister will only advance timing under vacuum conditions such as idle and part throttle cruising.  Even stock, at WOT the motor has no vacuum so the advance is removed - you'll be fine applying boost to it save for blowing the poor thing up.

HTH,
Javad

>Was just wondering if applying boost pressure to the vacuum advance unit on the distributor on an 87 4KQ would cause it to retard the timing?? Or does the diaphragm only go one way..
>
>Thanks
>
>Bill
>
>87 4KQT
>86 SLAAB SPG
>