Spark Plug Gap

The spark plug gap should be .035, right?  That’s what I thought.  But like lots of others, I tried different things.  When installing electronic ignition, it came to my simple mind to try a wider gap.  Modern systems use wider gaps with electronics.

.040 was a bust, so I went back to .035.  Then Ed Better was showing me an article in Les Andrews’ book that caught my interest.  It stated that with high compression heads you should close the gap to .030.

OK, done!  This will be my secret until I know the results.  I was then off to the nationals in Cincinnati.  Wow, an average of two miles to the gallon improvement on my fuel consumption!  I then told others and all experienced the same improvement as long as they had high compression heads.

This tech tip was provided by AJ Pennington and printed in the Mar/April 2003 “A” Quail Call.

Bookmark the permalink. Both comments and trackbacks are currently closed.