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Thread: 15/22 prop

  1. #1

    Join Date
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    15/22 prop

    Hey guys here are my mods

    2004 RXP
    Rude Charger (slip at 95inch pounds)
    Stock ECU!!!
    Rude RRFPR
    Custom XS Intercooler
    HKS BOV
    4" Intake
    Custom gutted/ Shorty Waterbox
    Custom Thru hull
    Front motor mount
    Metal washers
    solas 15/20r +4mm
    82mm Riva pump ring.

    is this to much prop. i am currently running ~7800-7900 rpm
    thanks
    RUNNING STOCK ECU!!!


  2. #2
    DaveC's Avatar
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    I tried a similar setup with the stock ECU. In my notes I was using the 15/20+2mm and was turning 8100-8120 RPM with 12.3 PSI boost from the Rude. That was also using the 81mm venturi ring.

  3. #3
    speedskixp's Avatar
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    Quote Originally Posted by DaveC View Post
    I tried a similar setup with the stock ECU. In my notes I was using the 15/20+2mm and was turning 8100-8120 RPM with 12.3 PSI boost from the Rude. That was also using the 81mm venturi ring.
    15/20+2mm isn't that the same as a 15/22?

  4. #4
    DaveC's Avatar
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    Not sure, I do not have a stock pitched 15/20 to check with the gauge. Maybe somebody here has checked them.




    Quote Originally Posted by speedskixp View Post
    15/20+2mm isn't that the same as a 15/22?

  5. #5

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    In my experience, the 15/20's are dead on 15/20.

    Also in my experience, a 15/20+2mm ~ 15/22 even though the "+2" is in mm and the 20 is in degrees.

    Boosted, you might try the stock nozzle.

    Mike

  6. #6

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    i could probably get full rpm with the 83mm and a new wear ring

  7. #7
    DaveC's Avatar
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    Maybe, what is your speed now ?





    Quote Originally Posted by BoostedH23a1 View Post
    i could probably get full rpm with the 83mm and a new wear ring

  8. #8
    West Texas RXP skoepp's Avatar
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    Quote Originally Posted by BoostedH23a1 View Post
    Hey guys here are my mods

    2004 RXP
    Rude Charger (slip at 95inch pounds)
    Stock ECU!!!
    Rude RRFPR
    Custom XS Intercooler
    HKS BOV
    4" Intake
    Custom gutted/ Shorty Waterbox
    Custom Thru hull
    Front motor mount
    Metal washers
    solas 15/20r +4mm
    82mm Riva pump ring.

    is this to much prop. i am currently running ~7800-7900 rpm
    thanks
    RUNNING STOCK ECU!!!
    I am running exact same setup. I tested my GH 15/20 with +2 mm or so and my 15/22. Exact same rpms and speed.
    With either prop, at 2,600 ft and 100 degrees air i can only turn the props to 7,850. I think you are right on. Heat and altitude will kill us compared to cooler weather.

  9. #9

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    73 at best on Empty
    i was running 72 on a stock one last year. unless my gps is retarted this year. i did however let a stock rxp, with a prop (not sure what prop) run and he hit 65.x
    ill see what the density altitute is and post it in a minute
    ok
    density altitue 2538ft (performs like its at that alititue)

    air temp 94
    altimeter 30.00
    dew point 78
    (humity would be around 70 %)
    Last edited by BoostedH23a1; 06-09-2008 at 04:06 PM.

  10. #10

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    Quote Originally Posted by skoepp View Post
    I am running exact same setup. I tested my GH 15/20 with +2 mm or so and my 15/22. Exact same rpms and speed.
    With either prop, at 2,600 ft and 100 degrees air i can only turn the props to 7,850. I think you are right on. Heat and altitude will kill us compared to cooler weather.

    holy ballz 79.1 wtf is that in the winter? wtf is wrong with my shit

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