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CB500/550 / Re: Plugs fouling at idle
« Last post by K2-K6 on Today at 05:07:30 PM »Why not? If you can design for whole numbers you can design for half wayIn my understanding most of us took the D8ES-L heat range for in between 7 and 8.
Thats my view of extending the central electrode out into the combustion chamber too. It would allow it to heat more than a straight 8 to raise potential tip temperature, but not as much or as far as a 7 ..... well that's how I visualise it, whether that's true or not.
Any arrangement with longer route from porcelain at tip into the surrounding structure SHOULD make the tip retain more temperature .... that's generally what plug design achieves.
Wouldn't an 8.5 be called a "9-L" by that description ?