Posted by C. Garbee on Monday, May 05, 2003 at 10:26PM :
One of the guys who frequents the M37 forum (BigElectric) sent me an extensive file on sparkplugs including a nice PDF file showing various end conditons that is useful in diagnosing various tuning conditions.
The page has a discussion on heat numbers, tip construction, and other variables that are considered in choosing plugs...
The URL for the page on my website is:
http://www.garbee.net/~cabell/SparkPlugData.htm
Follow Ups: