Question on spark plug gap
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Cruiser
Joined: Apr 2014
Posts: 122
Likes: 9
From: Arizona
Question on spark plug gap
So,
on another thread, I am doing a winter build on my 2008 Night Train.
Since I went down to the big city from these mountains I live in, for thanksgiving weekend. I took the opportunity to pick up some exhaust gaskets and spark plugs.
I picked up the standard factory plugs because I am only going to run them this summer, then, hopefully, change out the cylinders to 107's from the 96 engine it is now, come next winter.
So, I get back up here, check the gap out of the box. .30 is what it comes to. I search online, and pretty much only find the nightrider site saying .40.
Ok, I antiseize the new ones, set to .40, and put them in.
For giggles, I checked the old ones coming out of a 7,500 mile engine (likely original). The measured around .34. , or .30 with slight wear.
So, I am sure it runs ok between .30-.40. But, is there advantages to either setting? (longer life, slight power increase. etc)?
What do yall run?
I will be running a heavy breather intake, pipes, and xieds for the summer, if that matters.
on another thread, I am doing a winter build on my 2008 Night Train.
Since I went down to the big city from these mountains I live in, for thanksgiving weekend. I took the opportunity to pick up some exhaust gaskets and spark plugs.
I picked up the standard factory plugs because I am only going to run them this summer, then, hopefully, change out the cylinders to 107's from the 96 engine it is now, come next winter.
So, I get back up here, check the gap out of the box. .30 is what it comes to. I search online, and pretty much only find the nightrider site saying .40.
Ok, I antiseize the new ones, set to .40, and put them in.
For giggles, I checked the old ones coming out of a 7,500 mile engine (likely original). The measured around .34. , or .30 with slight wear.
So, I am sure it runs ok between .30-.40. But, is there advantages to either setting? (longer life, slight power increase. etc)?
What do yall run?
I will be running a heavy breather intake, pipes, and xieds for the summer, if that matters.
Tourer
Joined: Aug 2010
Posts: 313
Likes: 2
From: somewhere in "The Peoples' Republic of Illinois
Set them to recommended gap. Electronic is usually .038 to .042" but some aftermarkets are different gap.
Some models/iggy systems will use other gaps with various accessories such as exhaust pipes, carb or injection, etc.
Magnetos some times are much closer in gap than most set-ups.
Some models/iggy systems will use other gaps with various accessories such as exhaust pipes, carb or injection, etc.
Magnetos some times are much closer in gap than most set-ups.
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