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spark plug poll

What Spark Plug do you use?

  • HD

    Votes: 408 53.4%
  • Champion

    Votes: 91 11.9%
  • Autolite

    Votes: 39 5.1%
  • AC Delco

    Votes: 3 0.4%
  • NGK

    Votes: 89 11.6%
  • Accel

    Votes: 4 0.5%
  • HD Platinum

    Votes: 47 6.2%
  • NGK iridium

    Votes: 69 9.0%
  • Accel Platinum

    Votes: 6 0.8%
  • Autolite Platinum

    Votes: 8 1.0%

  • Total voters
    764
I've always run HD plugs, never had the first problem. After they get 10,000 to 12,000 miles on them I change them out of guilt that I'm ignoring them, but they still look good and burning clean.
 
G'day all,

Got the bike dynoed and it returned 45 mpg @ about 120kph on a 35 c day fitted a set of NKG Iridium @ US$ 9.50 and went on a protest ride pocker run and she got 47.5 mpg:D

Stinga
 
I am running the iridiums. I think that I had one foul on me, but I am not sure. I am going to put another set in and if I have the problem again, I am going to back to the HD plug.
 
Really no advantage to the fancy plugs in these motors especially if the engine is basically stock with just stage 1 components.

I wouldn't spend the money over the stock plugs myself.
 
I have been useing the ol HD plugs. Can't see any reason to change, plus there easy to find. Don't cost any more here than another plug around here.
 
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