heat range. 7 is a "hotter" plug. That means it transfers more heat to the cylinder head during operation.
what is the difference between dual and single pin spark plugs
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Static is the name of an electricity, a spark is like the outcome of friction. Like, you can use static electricity to make a spark.
The RC14YC in a hotter plug.
The Packaging. Autolite MAKES Motorcraft
The pmp plug has platinum electrodes.
It's exactly the same phenomenon; lightning is just a very large spark.
Cj8 is hotter than cj7
8 is hotter than 9 (toolmanx3)
the time it duration for the action and voltage drop
Basically they are for different climate/riding conditions.
hit it with a grinder red brass puts out a red spark yellow brass puts out a yellow spark