I saw an old posting here the "How-to-Articles" about cutting the electrode arm even with the electrode, looks like a good idea.
Anyone know if this has any long term issues on the cylinder, piston and valves?
under this heading "Improving spark plug performance"
Spark plug cutting
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cfennell1832
- Posts: 71
- Joined: Wed May 09, 2012 7:55 pm
- Location: Concord, California
- Motorcycle: Honda Goldwing 2007 1800GL
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wingman12
- Posts: 669
- Joined: Fri Aug 22, 2014 5:01 pm
- Location: Land of Lincoln
- Motorcycle: 1999 gl1500 se
Re: Spark plug cutting
From what I have read on other sites concerning "side cutting" your plugs, there is no indication of these causing any kind of damage to the engine. So I did a set for my 99 1500 and a set for a 82 1100. I immediately noticed an improvement is starting (after sitting for the winter months was always extremely hard to get started in spring) with the side cut started within 5 seconds. They also cut down on the warm up time. hard to tell but the bike seems to respond quicker and with less hesitation on the quick accel. I can not really say I noticed any increase in MPG. I do not have enough mileage on them to be able to evaluate the life expectancy of these NGK plugs yet. 