Timing an electronic Mallory dostributor (1 Viewer)

[nat869]

I have a 1975 FJ55 with a stock F motor. I just got it and it has a Mallory electronic distributor. I have never delt with one before and was wondering how to time it. There seems to be no way of disconnecting the advance. Thanks for any help.

 

[CruisinGA]

let it warm up, hook up a vacuum guage to manifold vacuum.

Loosen retaining bolt at base of distributor, with engine idling, rotate distributor for maximum/ most consistent (non flucuating) vacuum.

The advance should not have any appreciable effect at idle. If it is a vacuum advance simply unplug it and plug the hose.

 

[nat869]

It has no vacuum advance, just 3 wires going to it. Check it by vacuum?

 

[CruisinGA]

Engine vacuum is a good indicator of static engine timing, among other things.

 

[dfmorse]

U might find some info here:

http://www.centuryperformance.com/mallory/index.asp

 

[ken_79-fj40]

I have a mallory on mine with no vacuum advance. But mines got points. I set my timing to the bb on the flywheel, just like stock and it seems to be fine. Mine gets to about 30-32 degrees advance at around 34-3500rpm. Vacuum advance sure would be nice though. I may get another toyota (maybe a non-usa one) distributor when I do my engine rebuild.