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br7es vs. br8es?

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  • br7es vs. br8es?

    Just noticed the manual calls for BR7ES plugs, both Seadoo XP have BR8ES in them...any significant difference between the two? Whats the correct gap?


  • #2
    Re: br7es vs. br8es?

    Friend has an older yamaha that calls for BR8HS, but he runs BR7HS, he says it burns more of the oil off, less fouling I presume, so it runs better longer. I'm not sure of the difference on the ES though.

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    • #3
      Re: br7es vs. br8es?

      For what ski? Year?
      "The problems that exist in the world today cannot be solved by the level of thinking that created them." -- Albert Einstein

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      • #4
        Re: br7es vs. br8es?

        If you responded to my post, it's a 95 Waverunner III.

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        • #5
          Re: br7es vs. br8es?

          You need to run the BR8HS and the correct gap is .024. I assume your ski is a 650, but the plugs and gap are the same for a 700.

          http://www.ngksparkplugs.com/part_finder/index.asp
          Last edited by Vikesfan; July 30th, 2009, 04:40 PM. Reason: Wrong link
          "The problems that exist in the world today cannot be solved by the level of thinking that created them." -- Albert Einstein

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          • #6
            Re: br7es vs. br8es?

            It's just one heat range different, lower numbers = hotter plug (at least for NGK's like these, I think other mfg's may be different)
            Not a big difference, a hotter plug may keep it from fouling out a little better, if you were having a problem with that.

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            • #7
              Re: br7es vs. br8es?

              Hey Vikes, uhm the BR7 actually runs smoother. Also, I just added the reference to those plugs to help out Jimmytee, I'm not the one that needs the question answered it's Jimmy with the sea-doo. But the gap sounds good for everyone .

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              • #8
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                Re: br7es vs. br8es?

                My bad. If its a Seadoo XP then the right plugs would be a BR8ES for the 951, 720, and 650 engines with a gap of .022 and BR7ES for the 580 engines with a gap of .022. The 2003-2005 951 DI engines need a ZFR4F-11 NGK Plug with a gap of .035.
                "The problems that exist in the world today cannot be solved by the level of thinking that created them." -- Albert Einstein

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