Join Date: Aug 2006
Location: Greater Puget Sound Area
Re: Testing ignition coil output
Ignition coils put out "constant power" under all conditions.
That means that as voltage required goes up the amperage delivered goes down.
The determining factors for required voltage required are:
The easy way to find out how much voltage your coil will put out is to increase the plug gap until it fails while watching the voltage on the scope.
The best way to find out the best gap for your plugs is to narrow the gap until it mis-fires at idle.
The smaller the gap - the lower the voltage required - and the higher the amperage available to ignite the mixture.
VOLTAGE DOES NOT IGNITE THE MIXTURE - AMPERAGE DOES.
66 Mustang Coupe. 365hp, 4spd Toploader, sub-frame connectors
Shelby drop, suspension tuned for slalom and hill climb
body mods and weight reduced to 2000lbs; name: Muskrat