Quote:
Originally Posted by Purdy Swoft
Some may want to run an original Ford script coil , Others may just not want to spend the money for a new coil . If running a six volt coil on twelve volts a resistor mounted at the coil connection will be needed or the coil will burn out . The three Ohm coil will give hotter spark than the six volt coil being used on twelve volts with a resister . I run a three Ohm coil on twelve volts and my coil doesn't get hot . I use the Pertronix three Ohm Flamethrower coil . The Flame thrower coil is a performance coil that will add power that can be felt . The spark comes from the coil . I'm not saying that a performance coil must be used . its just a matter of choice . The model A needs all the help it can get !!!
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Am just trying to understand.
Why does the 12 V coil give a hotter spark than a 6 Volt coil with resistor? Both draw the same current, and both use the same spark plug gap/points gap. What am I missing? Does the 12v Coil Store more energy for the discharge? If so wouldn't that be hard on the points?