Spark plugs
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Joined: Apr 2009
Posts: 80
Likes: 0
Don't know for sure, but my bike came with ngk resistor plugs. After a lot trial and error, and not wanting to buy million $ plugs from harley I found an ngk non resistor plug-solved all my problems, they are ngk b-6L right or wrong I was told that the coil delivers just the right juice and does not resistor plugs to adjust it!
Road Master
Joined: May 2012
Posts: 867
Likes: 160
From: Vermont
Is it not possible that someone doing a search about reading spark plugs could benefit from an 11 year old thread? Perhaps of no benefit for the original poster but maybe lotsa help for someone searching for info NOW.
Last edited by turbotom1052; Feb 15, 2020 at 03:52 AM.
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Joined: Sep 2012
Posts: 52
Likes: 4
From: USA
My ride is a 1980 thousand cc xlch. Even thoughy I got the repair manual that tells what the Harley plugs are. Since I do not live close to a dealer I try to get the best plugs at some auto parts dealer. For some time I used Champion RL82YC. I was never really satisfied with these plugs. I learned from a Harley chopper repair shop about NGK 2633. Other Harley ownes around used NGK and they could be got at NAPA so I switched and use NGK plugs now..
1980 should be an XLH. last XLCH was 1979. Early 1980s had some 1979 parts so if it is a 1980 a former owner may have installed a kick starter.
NGK BPR6HS if it has an electronic ignition such as the original ignition, or aftermarket Ultima or Crane.
For points ignition NGK B6L is a correct one.
These are the choices of many IronHead riders, although there are other opinions.
NGK BPR6HS if it has an electronic ignition such as the original ignition, or aftermarket Ultima or Crane.
For points ignition NGK B6L is a correct one.
These are the choices of many IronHead riders, although there are other opinions.
Last edited by IronMick; Apr 11, 2020 at 10:02 PM.
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Advanced
Joined: Sep 2012
Posts: 52
Likes: 4
From: USA
I used to run champion RL82YC and they would faul quickly. I swtched to NGK 2633. They do not faul as fast, But in the end found out I needed to put the fuel bowl vent plug back in. That has made the engine run a lot better. Now I add Marvel mytry oil to the gas.
Seasoned HDF Member
Joined: Oct 2007
Posts: 8,852
Likes: 2,493
From: Decatur, Alabama
I love it when an old thread comes back around. And it's always nice to reread what Piniongear said.
I finally took my ironhead out for it's maiden voyage with a mikuni on it. Starts easier than my Honda now. Only problem I have is that the air cleaner sticks out a little too far and I can't get my right foot on the hwy peg. I'm running the Branch intake manifold and air cleaner backing plate with the stock ham can cover.
carl
I finally took my ironhead out for it's maiden voyage with a mikuni on it. Starts easier than my Honda now. Only problem I have is that the air cleaner sticks out a little too far and I can't get my right foot on the hwy peg. I'm running the Branch intake manifold and air cleaner backing plate with the stock ham can cover.
carl