2012 flhtk oem spark plugs
Road Warrior
Joined: Dec 2019
Posts: 1,783
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From: Ohio
As far as I know, and I'm sure somebody will correct me quickly if they feel I am wrong. Back in the seventies when I was learning to wrench on motorcycles I worked in a local shop that would not sell Champion spark plugs. I was told back then Champion spark plugs were built with a two-piece electrode running down the center of the plug. And that was the problem, they have been known to separate. Hence the bad rap. AC ( it stands for Albert Champion) isn't supposed to be any better. Who knows? That is just what I was taught many years ago.
Road Master
Joined: Aug 2018
Posts: 1,105
Likes: 705
From: Ramseur NC
I think I said AC was Champion
Road Master
Joined: Aug 2018
Posts: 1,105
Likes: 705
From: Ramseur NC
Thanks for that info... I had never heard of that before, but that would be an actual, physical/component difference that could affect reliability/performance...
I can see I will be cutting open an old Champion spark plug in the near future so see what the electrode looks like...
NOTE:
FWIW... I found a couple cut away views of spark plugs. I compared a Champion v NGK copper plug cutaway... although slightly different in their material composition, it seems they have the same basic construction design...
I can see I will be cutting open an old Champion spark plug in the near future so see what the electrode looks like...
NOTE:
FWIW... I found a couple cut away views of spark plugs. I compared a Champion v NGK copper plug cutaway... although slightly different in their material composition, it seems they have the same basic construction design...
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,166
Likes: 11,261
From: San Diego, CA
I certainly don't know what they were 50 years ago... not sure I see the advantage, particularly when it comes to cost, to use a two-piece copper core... but that wasn't the point for me anyways...
It gave me actual manufacturing differences to look for.... and I was looking to see if the "badmouthing" they get from some people had a factual basis or if it was personal preference, anecdotal experiences ... I guess those opinions could have had much merit 50 years ago, but at this point I was just trying to see if today that prejudice is valid...
I'm not usually "brand" loyal, but I have had old experiences that have formed my opinions... For example, based on experiences of a friend, and me personally, from the 70's... I won't use anything with the "Fram" name on it... That could also be old info... btu if someone gave me a case of oil filters for my Jeep that were "Fram"... I'd toss them in the trash... SCientific or what...
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