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  1. #1
    SonicRA's Avatar
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    Cool Why is noone turning over 8000 rpm?

    Hey this could be a reallllly dumb question......... But everyone seems to be running around 7000 to 7300 is there a reason why people are tuning to run in that band? Cheers


  2. #2
    KamikazeGPR's Avatar
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    The 03 and up E.F.i 1300's have a 7400 factory rev limiter. In 4 years no aftermarket has come out with anything to alter it.

    My stock engine 06 generally runs in the 7320-7350 range. If i were to install the dynafly prop. It would most likely lower my rpm's down close to or below 7000(which many people feel is not healthy) and i trust them.

    There are a few parts and tricks available to get back rpm's after the prop change. But, most people are only going to get back into the 7100-7200 range. And if they are lucky enough to stay in the 7300 range with an aftermarket prop. I'm sure they will increase the pitch to gain more speed which will decrease the rpm's. It's a treadwalk between gaining speed and maintaining a safe rpm. Weather can be a big factor too. There were a few days this past summer i lost 80 rpm's from one day to the next.

    Some people with highly modified 1300's,1400's,1500's have backwards converted the efi skis back to carbs using the 1200r's electronics. Not only do the 1200r's have a higher rev limit. There are also aftermarket cdi's available.

  3. #3
    African-American
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    anyone know how the revlimiter is controlled ? and how it gets limited ? and where the cdi gets the data from ?

  4. #4
    HopatcongGPR's Avatar
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    the stock pipe makes peak power in the 7250 area with a 1200, 7200 area with a 1300, 7100-7150 on a 1400 and 7000-7050 are on a 1500.

    at least thats what i have found over the past 7 years.

  5. #5
    OLD # 7 IEGPR's Avatar
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    If you look around there is a video of Ben H doing 89 and his rpms hit 8000. If someone knows were this video is can you please post the link? Also why do we not see a lot of the MSD systems used

  6. #6
    OLD # 7 IEGPR's Avatar
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    By the way I think it was a tripple
    pipe.
    Last edited by IEGPR; 11-24-2007 at 11:54 AM.

  7. #7
    Moderator OsideBill's Avatar
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    Like Hop said the rpm's are tuned to the power band of the pipe. Tripple pipes have a different power band.

  8. #8
    OLD # 7 IEGPR's Avatar
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    So what is the power band of tripples

  9. #9
    krispaintballz's Avatar
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    Quote Originally Posted by IEGPR View Post
    So what is the power band of tripples

    The power band peaks at abot 7400 to 7600 rpms on the gp. I dont know about the gpr. Prob around the same??? 7400 to 7600 is a wide range just kinda depends on the setup and pref. Some people will see slightly different results.

  10. #10
    chuck's Avatar
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    were did you get 7400 rev limit at on efi skis

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