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Old 06-22-2005, 08:06 PM   #1
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Default Plugs and my engine

I have a novarossi, NS12, I think, .12 sized, standard plug. I have some novarossi special ultra plugs that ive been using. I was running a C6G last week, and it was running pretty hot. I went to teh novarossi website, and it said that the 6 plug was reccomended for a 3.5cc+ sized engine, which if i convert right, is a .21. Would using that plug in a .12 make it run funny? I switched to a C4G for this week for now, but that said, this is my first season of gas so I really have no idea what Im doing. Are those size ratings on teh site to be beleived?
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Old 06-23-2005, 01:58 PM   #2
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i really dont think the Novarossi site will lie to there customers
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Old 06-23-2005, 03:47 PM   #3
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Im not saying that theyre lying at all - Im asking if those reccomendations are based on what protects the manufacturer, or based on what works.

Same kind of thing as in electric, where the manual tells you what gear to use of a stock motor - its not a hardfast rule.

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Old 06-23-2005, 03:53 PM   #4
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.12 and .21 engines use the same size plugs. As a rule of thumb, you use a hot plug for .12 and a cold plug for the .21. Go to Nova's web page and find the heat ranges for their plugs and you should be good to go.

Here is some general info
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Old 06-28-2005, 05:29 PM   #5
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Default plugs

in general when the outside temp gets hotter you use a colder plug and when the temp drops you use a hotter plug but remember the engine temp will change as you change plugs and may have to tune motor. your best bet is to find some other racers and see what they are running and work from there
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