Quote:
Originally Posted by Isaac Zachary
That's also been myth-busted. Sharp edges in the right spots can actually decrease knock as it can help fuel to reatomize. One of the worse combustion chambers for knock was the hemispherical head.
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Thx for the vids: Interesting stuff!
But i think we're mis understanding each other here.
I'w as talking more about burs from machining and unfinished/polished castings than the 'less sharp' edges etc in the vids.
Quote:
Originally Posted by Isaac Zachary
Sparkplugs have various levels of insulation to keep their temperatures up. It depends a lot on the application, but the idea is hotter, insulated spark plugs keep the carbon burned off. Too much insulation and therefore too hot of a spark plug could cause a problem such as pre-ignition.
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I'm aware of the heat range and self cleaning etc.
But the ground electrode can get too hot from what I understand and that's where copper and even silver is employed to conduct the excess heat back into the plug body, keeping the plug temperature more uniform..?
https://www.performanceracing.com/ma...ht-spark-plugs