Included on that list of old racers tuning tricks is spark plug side gapping. What’s being discussed here is not a true side gapped spark plug but a gapping procedure or electrode modification that allows the spark to actually fire off of the very edge or ‘side’ of the spark plug’s ground electrode. In lieu of a better description, this gapping process will simply continue to be called ‘side gapping’. Side gapping is performed even though the end result may not be measurable but a logical thought process will maintain that doing this will not be detrimental to efficiency or performance and in fact, should help it. Continue reading “Spark Plug Side Gapping”