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The Cold War Heats Up; Big horsepower means more heat, so when it comes to choosing a spark-plug heat range, the best advice is also the simplest-put spark plugs in the engine that will live. This goes for both race and street engines.
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www.carcraft.com/howto/116_0703_spark_plug_guide/heat_r...
www.carcraft.com/howto/116_0703_spark_plug_guide/heat_range.html
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Spark Plug Overview ... Spark Plug Basics; The primary function of the spark plug is to ignite the air/fuel mixture within the combustion chamber under any operating condition. Spark plugs must provide a path and a location for ... This is called “Thermal Performance”, and is determined by the heat range selected.
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www.ngksparkplugs.com/tech_support/spark_plugs/index.as...
www.ngksparkplugs.com/tech_support/spark_plugs/index.asp
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Spark plug - Wikipedia, the free encyclopedia
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A spark plug (also, very rarely nowadays, in British English: a sparking plug ) is an electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed ...
en.wikipedia.org/wiki/Spark_plug
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What Does It All Mean?; Hot plugs? Cold Plugs? What does it all mean? Definition: The heat range of a spark plug is its ability to dissipate heat from the combustion chamber to the cylinder head. The heat range, or dissipation capability, of a spark plug depends primarily on the length of the insulator nose.
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www.densoiridium.com/heatranges.htm
www.densoiridium.com/heatranges.htm
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A spark plug's heat range has no relationship to the actual voltage transferred though the spark plug. Rather, the heat range is a measure of the spark plug's ability to remove heat from the combustion chamber. The heat range measurement is determined by several factors;
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www.nagca.com/grandtech/sparkplugheat.htm
www.nagca.com/grandtech/sparkplugheat.htm
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The Heat Range is the function of the spark plug to regulate the temperature of the combustion chamber by its ability to maintain or to remove the hea ... There is no direct relationship between the spark plug heat range and the spark voltage. Each spark plug is manufactured with its own predetermined and specific heat...
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www.articlealley.com/article_467790_31.html
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A grayish tan to while color indicates the correct heat range spark plug is in use, the fuel and ignition systems are in good shape and overall engine mechanical condition is good. Replace with Champion plugs of the same heat range.
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dodgeram.info/Engine-Gas/SparkPlugs/spkplghnbook.html
dodgeram.info/Engine-Gas/SparkPlugs/spkplghnbook.html
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For almost any given brand of plug, the letters determine all the plug physical dimensions, while the number is the heat range. Unfortunately they differ between brands as to whether a higher number is hotter or colder.
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tr6.danielsonfamily.org/spark_plug_heat_range.htm
tr6.danielsonfamily.org/spark_plug_heat_range.htm
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A spark plug incorporating a heat shunt on the plug insulator nose arranged such that the characteristics of a "hot" plug are provided at lower operating temperatures and of a "cold" plug at higher op ... 4b is a similar view of the right half of the spark plug of FIG. 4a showing the heat path in the cold range of the invention;
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www.freepatentsonline.com/3612931.html
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