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Old May 15, 2011 | 08:22 AM
  #31  
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I don't understand...the threads only start in one place on the spark plug and the head...
Are you talking about when to stop tightening? don;t want to over or under tighten...

Roy

Originally Posted by JRK5892
you can also get a better burn if you mark the plug where the gap opening is, then when you install it make sure that gap faces the center of the jug... old trick my dad taught me... works great!
 
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Old May 15, 2011 | 09:23 AM
  #32  
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Originally Posted by RBar
I don't understand...the threads only start in one place on the spark plug and the head...
Are you talking about when to stop tightening? don;t want to over or under tighten...

Roy
I had a friend that raced hobby stock. When they did that they would mark the side of the plug were the electrode was and just keep putting different plugs in different cylinders until they found ones that lined up the way they wanted. I agree you can't just stop tightening, or over tighten the plug just to get it to line up the way you want.
 
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Old May 15, 2011 | 10:09 AM
  #33  
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Originally Posted by Blaster
I had a friend that raced hobby stock. When they did that they would mark the side of the plug were the electrode was and just keep putting different plugs in different cylinders until they found ones that lined up the way they wanted. I agree you can't just stop tightening, or over tighten the plug just to get it to line up the way you want.
They also sell brass washers for indexing sparkplugs. Mark the plug and then add shims so the plug lines up where you want it. Won't work on heads that use a tapered seat to seal the plug surface but Harley's use a flat gasket so brass shims would work if a guy was inclined to pursue this.

I stick with MOCO plugs on my bikes. 6R12 in the Street Glide and SE plugs in the Street Bob SE 120R. The plugs perform well and the cost isn't prohibitive. Have tried several different brands of sparkplugs over the years and have learned the hard way on a couple of occasions that maybe the factory does have a clue when they recommend a specific plug (dodge idle problem that finally went away after I used Champion plugs instead of the other brands I had tried).
 

Last edited by Inspector 12; May 15, 2011 at 10:15 AM.
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Old May 15, 2011 | 03:29 PM
  #34  
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Just as guilty responding to a thread this old.
 
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Old May 15, 2011 | 04:14 PM
  #35  
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Originally Posted by seniorsuperglideE8
Just as guilty responding to a thread this old.
Half the time someone asks a question and all we see is "do a search, it's been asked a million times". Now we're not supposed to bring back old posts.

I'll reply to any thread that I think I can contribute to.
 
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Old Oct 31, 2011 | 10:06 AM
  #36  
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Default Search brought me here

Rather than start a new thread without doing a search, I found this one.

My question: Any Dyna riders have any experience with the Screamin' Eagle Spark Plugs? They boast that they are awesome for stage 1 applications.

Anyone have good/bad experience with them?
 
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Old Oct 31, 2011 | 06:42 PM
  #37  
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I used the E3's in my last bike . I really like them they make the motor run super smooth. Next spring I will put them in my dyna.
 
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