which spark plugs
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Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
which spark plugs
Ok EVO buddies, I gotta ask, I've been using the Harley plugs now for a couple seasons and although when the bike is running good its running good if you know what I mean. After doing a 16 x16 addition to the garage and adding a oil furnace ( garage kinda back in order ) I went out to give the bike a start before doing the upgrades on the ignition charging and stereo oh yes Ill be diving into the tranny as well to see why I keep blowing 4th. Well wouldn't you know it bike won't start, got fuel got what appears to be descent spark and of course the battery runs down, so put the charger on overnite. Suspecting crappy gas actually.
So first off thanks for listening I feel better already. Second off to the question at hand, what are you guys using for spark plugs that have been consistantly realiable?
Thanks in advance.
So first off thanks for listening I feel better already. Second off to the question at hand, what are you guys using for spark plugs that have been consistantly realiable?
Thanks in advance.
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
Likes: 494
From: Richmond, VA
OK, this will get ugly as these posts always do, but I us plain old Champion RN12YC. Back 20 or so years ago I was working at Trak Auto. They were a giant chain auto parts store just like Pep Boys and Auto Zone are now. At that time I did the sales class and learned from the Champion Rep Harley never made a spark plug in their life. Champion had been making plugs for Harley's and re branding them. That was good enough for me and it still is. Now that quite possibly has changed and I have no idea where Harley gets their plugs now, or even if they now do it in house (which I doubt), but I still use RN12YC Champions. Never had an issue.
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Stellar HDF Member
Joined: Apr 2009
Posts: 3,039
Likes: 11
From: Northern Ontario
Thought I'd add this link http://www.harley-performance.com/ha...park-plug.html it may be handy for refernce down the road.
Road Master
Joined: May 2009
Posts: 817
Likes: 1
From: N.E. Ohio
Here's another interchange table of different brands. I usually run HD plugs, but I have been running Autolites lately. Got a deal on 2 sets of the Platinums
http://www.nightrider.com/biketech/hdsparkplugs01.htm
http://www.nightrider.com/biketech/hdsparkplugs01.htm
Last edited by BB4xl; Jan 5, 2011 at 11:51 AM.
Advanced
Joined: Mar 2010
Posts: 91
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From: Utah
I've always ran the HD plugs. Haven't had any problems with them. Might have to give the Autolites a try next time.
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