A "hot" spark plug has a longer insulator that prevents heat transfer into the water jackets. It keeps more heat in the tip of the spark plug, which helps burn off combustion chamber deposits. But if ...

Gasoline internal combustion engines need three fundamental things: fuel, oxygen, and spark. The sexy aspects of modifying cars are focused on the first two elements: Double Pumper carburetors, ...

Q. What is the purpose for the heat range of a spark plug? This question came up with me and my neighbor. J.K., Pittsburgh A. No need for a heated debate. First, “heat range” has nothing to do with ...

Today, spark plugs are pretty easy to forget. In new Corvettes, theyseem to last forever. That wasn't the case years ago and, frankly, sparkplugs are often critical when it comes to performance and ...

Weichai Power has developed a spark plug heat rating measurement method and system using spark discharge current for precise evaluation. By controlling discharge current and measuring temperature ...