25 132 28 spark plug cross reference chart

If the insulator tip temperature drops into the so-called deposit zone, combustion deposits (carbon, non-combusted fuel, lubrication oil, impurities from the atmosphere) start to form on the insulator tip surface. One heat range changes the spark plug insulator tip temperature by about 75 - 100 degree Celsius.Ī. In order to ensure sufficient insulation between center and ground electrodes it is necessary, to keep the insulator tip (the part of the insulator projecting into the engine area) within an optimum temperature range. Insulator tip temperature is influenced by the proper choice of spark plug heat range. Two basic conditions for proper performance of a spark plug are given by sufficient electrical insulation between the center and ground electrodes, and heat transfer from the parts of the spark plug projected into the combustion chamber.

Adapt to specific engine characteristics and widely varying driving/load conditions.

Run hot enough to burn off combustion deposits that would otherwise collect on the sparkplug insulator tip and cause fouling, that leads to misfire.

Stay cool enough to avoid pre-ignition and/or electrode destruction due to detonation.

brisk usa spark plug cross reference table.

Development Trends Of Spark Plug Dimensions.

spark plug supplied voltage requirements.

25 132 28 spark plug cross reference chart