Spark Plugs stock vs. iridium
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  1. #1
    Junior Member aztw200's Avatar
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    Hi, anyone have comments pro or con about using a ngk dr8eix iridium spark plug vs a stock ngk dr8ea on a 2011 tw. thanks for any input.

  2. #2
    Senior Member n2o2diver's Avatar
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    I'm going to wager negligible difference. Suck, squeeze, bang, blow. How much bigger of a bang is a single spark plug capable of making in a 196cc engine. I don't know, but my guess is not much.
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  3. #3
    Senior Member howardgene63's Avatar
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    I put an iridium plug in my tw, I didn't notice any difference in performance, but I have taken iridium plugs out of toyota cars at 100,000+ miles, that looked like new plugs.

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  5. #4
    Member BuddyMc's Avatar
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    My mysterious high speed miss simply went away when I reinstalled a stock type plug and replaced the "fancier / better" plug. Beats me why, but it left, and hasn't returned. No discernible difference performance or mileage either. I've stayed with the stock style plug, thank you very much. Your experience may vary from mine.
    Huntsville, Alabama - Have TW, Will Ride! All White 09 TW, D2Moto Pegs, Bridgestone 302 front tire, 2" higher bars, 3/4" fork preload spacer, 5wt Honda fork oil, 135mm fork oil level, exhaust tip mod, 2.5 turns out fuel mixture, 0.060 in needle shims, 130 main jet, 14/47 sprockets, 20w-50 Valvoline MC full synthetic oil, ImmixRacing rear rack, Bilt Bag on Rack, 1" front fender spacers, Battery Tender connections on new battery (installed 12/11), Coleman ATV seat cushion, 2 Agri Supply tool tubes, 30oz MSR Fuel Bottle, auxiliary 6 LED tail light, Sylvania Silverstar Ultra H4 headlight bulb, 2357 turn signals, and Superbright's 1157 LED Motorcycle Tail Light Bulb with 19 red & 6 white LEDs. Shortened rear turn signals. Bypassed kickstand switch.



    Plus a "new to me" 1995 Yamaha Virago XV 750G for Pavement Purposes!!

  6. #5
    Senior Member Mhurchu's Avatar
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    Iridium are easier starting and they last longer

  7. #6
    Senior Member PalmStateCrawler's Avatar
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    I'll give it a shot. I'm sure we have one up at work I could pick up. I'll look tomorrow.
    '13 690 Enduro R too many frickin farkles...
    '07 KLX250 farkled (wife's bike)
    '86 BW80 farkled to size
    '10 TW200 you will be missed

  8. #7
    Member TWdude26's Avatar
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    Imho, stay with stock plug and change regularly.

    Having fresh new plugs every time sure bets having an old plug that can last longer...



    Furthermore no real benefit from these iridium plugs for our little low compression engine.
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