Spark Plugs
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Banned
Joined: May 2008
Posts: 998
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Spark Plugs
I tried to post this in the "Engine Related" section but I could not post.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
Cruiser
Joined: Dec 2006
Posts: 178
Likes: 0
From: Central Valley CA
RE: Spark Plugs
Read somewhere on this forum that the electronic fuel injection system is looking at the resistance of plugs and wires to fine tune itself and its best to stay with factory parts, if your bent on changing things try this link for plug cross reference.
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https://www.hdforums.com/m_342484/tm.htm
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https://www.hdforums.com/m_342484/tm.htm
Road Master
Joined: Feb 2006
Posts: 935
Likes: 1
From: SoCal
RE: Spark Plugs
ORIGINAL: NFFN
I tried to post this in the "Engine Related" section but I could not post.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
I tried to post this in the "Engine Related" section but I could not post.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
http://www.harleyhelp.com/sparkplg.html. \\; Might want to check this out..says in part..Little known fact:
2005 and later Harley-Davidson EFI systems incorporate an "Anti-knock" feature that operates by reading the current resistance through the spark plugs.
The use of any other spark plug other than 'Stock' (6R12) disables the anti-knock feature.
(Yes, that means the Gold, Platinum and SE plugs will also disable this function) .
 \\;
Don't know if true or not.
Thread Starter
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Banned
Joined: May 2008
Posts: 998
Likes: 1
RE: Spark Plugs
ORIGINAL: billk
 \\;\\\\\\;
http://www.harleyhelp.com/sparkplg.html. \\;\\\\\\; Might want to check this out..says in part..Little known fact:
2005 and later Harley-Davidson EFI systems incorporate an "Anti-knock" feature that operates by reading the current resistance through the spark plugs.
The use of any other spark plug other than 'Stock' (6R12) disables the anti-knock feature.
(Yes, that means the Gold, Platinum and SE plugs will also disable this function) .
 \\;\\\\\\;
Don't know if true or not.
ORIGINAL: NFFN
I tried to post this in the "Engine Related" section but I could not post.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
I tried to post this in the "Engine Related" section but I could not post.
What kind of spark plugs and wires is everyone using? I have a 07 Night Train 96 inch with 5000 miles on it and want to change the stock HD plugs.
http://www.harleyhelp.com/sparkplg.html. \\;\\\\\\; Might want to check this out..says in part..Little known fact:
2005 and later Harley-Davidson EFI systems incorporate an "Anti-knock" feature that operates by reading the current resistance through the spark plugs.
The use of any other spark plug other than 'Stock' (6R12) disables the anti-knock feature.
(Yes, that means the Gold, Platinum and SE plugs will also disable this function) .
 \\;\\\\\\;
Don't know if true or not.
Good article, thanks!
Ultimate HDF Member
Joined: Mar 2008
Posts: 5,040
Likes: 3
From: Nice home on the NorCal Coast
RE: Spark Plugs
Keep it simple.
Keep it stock.
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As already noted, HD EFI systems after 2005 seem to be a "little picky" so why create a problem if none exists?
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Krusr
Keep it stock.
 \\;
As already noted, HD EFI systems after 2005 seem to be a "little picky" so why create a problem if none exists?
 \\;
Krusr
Road Warrior
Joined: Jan 2007
Posts: 1,763
Likes: 5
From: Minnesota
RE: Spark Plugs
I also have read many tech articles that you could find by googling and searching on here that said that the stock plugs and wires are more than adequate for the motors. Actually if I remember right the need for a higher preformance plug and wire doesn't come into play until you get some of those 124" beasts or very high compression ratios like 11:1.
All the crap about increasing power or MPG is just that, crap.
That's just my .02, do with it what you will.
All the crap about increasing power or MPG is just that, crap.
That's just my .02, do with it what you will.
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