Check the instructions on the Pertronix.  If I remember correctly, the I unit requires the ballast resistor while with the II it is optional if using the Pertronix coil. 

Nat - a word of advice.  Don't piggyback on a prior thread (especially an old one) even if the subject is relevent.  Always start a new thread.


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

I switched to the Pertronix II and epoxy coil with no ballast resistor few years ago, 12000 miles now with no problems.

Hey Jim is that the Flamethrower 2 coil you installed?

Yes it is, sorry for the late reply.

Never had any problems deleting the ballast with Pertronix. Millions in service this way, and the spark output is noticeably hotter due to greater input voltage in the primary.

If you read the instructions, they suggest retaining it when using a stock OEM type ignition coil. The type 1 or original recipe Ignitor can handle approx 8 amperes through the primary ignition circuit. Measure the total ohms resistance of the primary ignition circuit and see what you get.

If stuff is burning up, then that points to a problem of course. An ignition scope would probably clear up the source of the trouble quickly I bet.

What kind of spark plug wires are you using? Solid core plug wires are not compatible for example.

I installed the the Ignitor II and Flamethrower II last night. Car idles very smooth. Better pick-up on acceleration. It takes a few more starter rotations to fire up. Coils seems to run much cooler. I am carrying my old 1.5 ohm coil as a spare. The ignitor II needs the 0.6 ohm coil. In an emergency is it OK to run the 1.5 ohm. Will it damage the Ignitor II module?