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Thread: 8350 RPM

  1. #1

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    8350 RPM

    need 100 more .Do I go to the 83mm nozzle or do i take a mm out of the impeller running 79.9mph best run 79.6average.or do I go to the 81 mm ring ad take 2mm off the impeller???running 11psi boost constant


  2. #2
    Site Admin Green Hulk's Avatar
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    Go to the 81mm ring and take 2 mm pitch out. Here comes 80+++

  3. #3

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    Thanks jerry I knew there was answer

  4. #4
    seadoor's Avatar
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    this a rxp or rxt

  5. #5
    Quote Originally Posted by seadoor View Post
    this a rxp or rxt
    RXP

  6. #6

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    Agreed! I have an 82mm. 8550 rpm. 11.3 lbs of boost. GPS regular at 80.2-80.9. The 81mm ring is in my parts bin ready to try.

  7. #7

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    Jerry !!!!Thank you

    81 mm ring 2 mm bend 69degree water 74 degree air 81.9 mph best 81.1 average. I finally have my sons GPR covered... In june I didnt want to work on these machines but through this board I learned so much that now Im even bending my own impellers Ths board and the guys on it are the best on water!!!!!!!!!!! Jerry HOW much more boost is the RUDE charger?????$$$$$$$$

  8. #8
    JFizzleJR's Avatar
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    Thumbs up

    A LOT


    P.S. Nice numbers Jim

  9. #9
    JFizzleJR's Avatar
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    I have a question. If you needed 100 rpms AND dropped from the 83mm to 81mm, how did the 2mm on the prop put you where you need to be? I thought it would be more like 3mm..

  10. #10

    82

    he had the 82 ring in

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