Spark plug cutting

Information and questions on GL1800 Goldwings (2001-Present)
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Posts: 52
Joined: Wed May 09, 2012 7:55 pm
Location: Concord, California
Motorcycle: Honda Goldwing 2007 1800GL

Spark plug cutting

Postby cfennell1832 » Thu Jul 02, 2015 12:56 pm

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"

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Posts: 610
Joined: Fri Aug 22, 2014 5:01 pm
Location: Land of Lincoln
Motorcycle: 1999 gl1500 se

Re: Spark plug cutting

Postby wingman12 » Thu Jul 02, 2015 2:07 pm

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. :D :D

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