Alpiners,
I am working with a nissan 2.0 liter industrial engine, and had
the opportunity to see the difference between points ignition,
and the pertronix ignitor ignition.
I am designing a spark trigger for a project, and my partner
replaced the points with the pertronix module, and it smoked
my circuit.
I had to get out a scope, to see what was killing my circuit, and
there is was, the pertronix module had a much higher primary
volatge, with about 3 times more voltage rise slope. The energy
[as measured] was about 3 to 1 at idle.
The spark was visibly stronger, sharp and blue.
Using the same coil and ballast resistor...
On the pertronix, the rise on the primary was 1.75 million volts
per second, with a 375 volt peak, this compared to 500,000 volts
per second with a 90v peak with the points.
[Twas the 375 volts that was killing my circuits 250v caps.]
The main difference between performance, was that the electronic
ignition doesnt need as much capacitor "condensor" as the points
do, so the spark rise is faster, with more energy.
The electronic ignition also servs to increase dwell to what
ever is required of the coil at the rpm that you are running.
So.....
Go get yourself an electronic ignition, the pertronix works well,
just get 2 of them, and keep one and a screwdriver in the car for
a spare.
Jarrid Gross
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