for radio control gas engines, what I need to know is what type of spark plugs are recomended for converted weed wacker engines that will cut down on radio noise , I saw a list one time but cant find the web site, if you know , let me know and about those spitfire plugs, can that type also be used ? thanks email me [email protected].

Any plug that fits in the engine will work if there is an "R" (for resistor) in the number..No sparkplug is better than any other if it works at all....The engine doesn't care where the spark comes from as long as it's at the right time....

None of the "wonder plugs" gives you any more performance than a brand new regular type plug with the correct gap. Most of the multi-electrode or split electroide or grooved electrode plugs are better only in the sense that they extend the useful life of the plug a little.

Spark energy is best when both the center and ground electrodes have sharp edges. In time, these sharp edges get worn out and become rounded, and the spark energy or intensity decreases, which under some conditions could possibly decrease the max performance of the engine. In reality, the difference is barely noticeable.

I'm just old enough to have learned the trick of sharpening the electrodes on a worn out plug to give it another lease on life. These day, it's far simpler to swap brand new ones in.