View Single Post
Old 02-21-2010, 08:55 AM
Bikeguy Joe Bikeguy Joe is offline
Godfather of Motorized Bicycles
Join Date: Jan 2008
Location: up north now
Posts: 11,531
Default Spark plug gap...Myth? Fact?

Here's something I have been wondering for a long time.

Spark plug gap. Consensus seems to say Around .025"

Now, is this from "back in the day" when points ignitions were gapped at smaller settings (.012"-.018'')?
I know with magneto ignitions, the gap is small(er) too.
But, we keep calling our ignitions "CDI" ignitions, which generally have plugs gapped as high as .065".

So, what is the truth? Has anyone tried to change the gap, say run one at .045" or .050"? Why not?

It's winter here, no riding, many, what say you on this matter?

The forum is open.
Reply With Quote