Cycle Improvements
Serving South Western Ontario since 1981
  • Home
  • Services
  • Repairs Gallery
  • Customer Portal
  • Store Info & Policies
  • Blog
  • Product

Spark Plugs, Heat Ranges and Misconceptions

11/26/2017

0 Comments

 
There is a lot of confusion when it comes spark plug heat ranges. Many customers ask me for a "Hotter" plug assuming that this has something to do with the spark output. It does not. Spark plugs are made in different heat ranges & can be identified by the number stamped on the plug. The lower the number the hotter the plug generally but not always ie: Champion plugs are the opposite. The plug heat range determines thet temperature that the plug is designed to run at & has to be matched to the application. As you can see in the picture below the difference in heat range or the temperature that the plug body runs at is determined by the length of the heat path taken from the plug firing end to the cylinder head. If used outside of it's designed heat range the plug may foul or overheat. It doesn't effect the spark quality or engine temp in any way. Generally, there is never a need to alter the stock heat range unless the engine has been heavily modified.
Picture
0 Comments



Leave a Reply.

    Author

    I have been involved in mechanics and motorcycling from a young age. I formed Cycle Improvements in 1981 and still have the same passion to learn today as when I started. Hope you find this blog interesting and educational.

    James Hunt

    Archives

    March 2021
    May 2018
    April 2018
    February 2018
    January 2018
    December 2017
    November 2017
    October 2017
    September 2017
    August 2017
    July 2017
    May 2017
    February 2017
    January 2017

    Categories

    All

    RSS Feed

Powered by Create your own unique website with customizable templates.