Quote:
Originally Posted by Purdy Swoft
The spark gets hotter when it jumps a gap . Just a way to get hotter spark for free if you want it . Of course an original model A doesn't necessarily need hotter spark . Hotter spark can be of benefit with modified engines .
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Purdy is right, as usual. "Air gap type"
Spark Intensifiers work on the same principle.
I'm not sure the increased hotter spark is free though, it is a little bit harder on the ignition components. If you have Quality healthy parts, there should be no problem.