I have NGK Iridium plugs with Magnecor 8.5mm wires.

 

so what you are saying is that ....by allowing the coil voltage to oscillate it will ad a few more altough smaller voltage spikes and then fire the mixture with more consistency.... if having a solid core wire the voltage/energy will instantly be absorbed in the first spike and if it didnt fire up the mixture that was the end of the story .... at least for that one power stroke that is....

That kind of makes sense.. in escence MSD is imitating that effect I guess, only is not a passive but an active effect.

By the way seperating the ignition wire from the spark plug does not provide that much resistance to the voltage path.... as soon as the air ionizes its resistance nearly drops to zero to the hight voltage though.. thats why Lightning can transfer so much energy instantaneously through that much distance in the air.

Question: Dont they sell solid core wires for those Top Fuel cars?? what kind of wires they use on those 5000 hp Cars?


Am I wrong to think they use the solid core wires?

I am curios.


Edit: I checked the TaylorVertex website. They sell resistor wires as opposed to magnetic core on their Pro wires. I thouhgt I would post that here. Not the spiro Pro but the "PRO" wires. the ones for race cars.

Marvin

 

The oscillations are a normal function of the voltage decay AFTER the spark is extinguished. There are two components to the establishment of the spark. On the scope the firing line is the maximum voltage that is achieved to initiate the spark, and the spark line ( far lower) is the voltage delivered over a few milliseconds until the coil runs out of energy and the spark extinguishes. The oscillations follow this point. Any good automotive ignition text will have a schematic drawing of this scope pattern.
MSD uses several individual sparks, and the only time I ever used it I scoped the ignition system. Sure enough, five separate sparks at idle. And at 5000 RPM one. Big deal. I sold the system.