Distributor Tester

scott657 said

IT WORKS
the distributor I am testing is all in at 20* full advance ( on the engine it would be 14 initial with 34 total) All in with this distributor is at about 3500 RPM, Ill change springs to try and get 2800.
And as I revved it up I saw some slight retard until it leveled itself out.
the machine needs a little refinement but so far so good.View attachment 1715568716

Click to expand...

Awsome.
There you go. Aslo shows that most of the retard we see is in the electronics, whether its the ECU or the dial back timing light or both.
Generally 3500 or later is better. There will be less retard and more control through at the high rpms, and will work better with vacuum advance. The shape of the pre-emisions factory or Direct Connection curves is generally the way to go. Drag race only, then quicker generally can be better - as long as it doesn't cost in too much retard at the top end.