[6pack] Spark Plug Heat Range

[Rochlin Robert]

	I’m looking for a spark plug that is just a little cooler than the stock Champion N9YC plugs that I’m running. I’ve had no luck finding Champion N8YC plugs and each manufacturer has a different designation for the heat range for their plugs so it’s hard to do a direct comparison .  Does anyone have a source for cooler plugs? I’m not concerned if they are not Champions.
	Best,
	Bob
	“72 TR6