Resistor Non Resistor Spark Plugs

- October 24, 2018

A resistor is exactly what the word implies. I know resistor spark plugs are used with cars that have electronic computers stereos etc.

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And i dont plan on installing a stereo.

Resistor non resistor spark plugs. The resistance of the plug and that of the electrode gap add onto each other. I do have petronix pointless ignition though. When the spark crosses the point of resistance some of the spark energy is lost.

However in most automotive applications a resistor plug is required for proper vehicle operation. Since resistor type plugs actually resist some of the spark energy non resistor type plugs actually deliver a more powerful spark. Ngk r or resistor spark plugs use a 5k ohm ceramic resistor in the spark plug to suppress ignition noise generated during sparking.

If you are looking for performance you want to use non resistor spark plugs. Mowers that contain on board computer systems to control engine performance or mowers that use other types of electronic control systems can suffer performance issues with non resistor type spark. Using a non resistor spark plug on a system designed for resistor plugs will weaken your spark and therefore negatively affect power output of the engine.

My 69 tr6 has none of that. Ngk strongly recommends using resistor spark plugs in any vehicle that uses on board computer systems to monitor or control engine performance. I was thinking about replacing the spark plugs with the factory recommended champion 12y non resistor.

The difference between resistorand none resistor spark plugsthe none resistor plug the perks the none resistor plug has the better overall performancebecause when it come to electrical. Non resistor spark plugs deliver a more powerful spark. A resistor is like an electronic obstacle and could be the cause for a weak spark.

It is for this reason that most racing plugs are non resistor types.

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