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Thread: Spark plugs

  1. #1
    Vic
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    Spark plugs

    Hey guys I have a 2001 GP1200R and I just got a pro-tec head with 37cc domes. What is the best spark plug to run with this.


  2. #2
    sleeplessnMS's Avatar
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    NGK Br8es{will need to tighten the cap b/f install} .032 0r NGK Br8es11.{solid cap}

  3. #3
    Moderator DrewNJ's Avatar
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    37cc domes make I think 170psi...right??? Personally, I'd run Br9es-11. Anything 150 and below should be fine on Br8es-11

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    Happily Self-Employed WFO's Avatar
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    BR9ES gap at .044

    you cant get a -11 in a BR9

  5. #5
    Moderator DrewNJ's Avatar
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    Nice catch Rich, I thought for sure the 9's I ordered were -11's but I just checked and sure enough, they are just regular ole' 9's..

  6. #6
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by DrewNJ View Post
    Nice catch Rich, I thought for sure the 9's I ordered were -11's but I just checked and sure enough, they are just regular ole' 9's..


    I have tried to get the 9s in a -11, but no go

    For those that dont know, the -11 just means wide gap

  7. #7
    CHICKA WAH WAH bren's Avatar
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    Quote Originally Posted by WFO View Post


    I have tried to get the 9s in a -11, but no go

    For those that dont know, the -11 just means wide gap
    the 11 is 1.1mm

  8. #8
    miagp21's Avatar
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    The 9's are 1 step colder than the 8's right??

  9. #9
    philip_gpr's Avatar
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    yes

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