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Thread: 13/19 or 14/20

  1. #1

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    13/19 or 14/20

    I have none or will I have any engine mods. Just intake great, ppk, and ride plate. which impeller do I get for top speed along with a new nozzle. Thanks guys.


  2. #2
    WATER WOODY's Avatar
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    what year?.....13/19 ,i would get the head milled for 150psi
    Last edited by WATER WOODY; 07-04-2007 at 10:12 PM.

  3. #3
    Duke's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    what year?.....13/19 ,i would get the head milled for 150psi
    What wool raider said plus I don't think a stock motor is going to pull the 14-20. The set back version will make it even worse.

  4. #4

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    Assuming a GP1200R... a 13/19 will work fine with the stock engine, 14/20 will be too steep.

  5. #5
    WATER WOODY's Avatar
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    Quote Originally Posted by Duke View Post
    What wool raider said plus I don't think a stock motor is going to pull the 14-20. The set back version will make it even worse.

  6. #6

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    You guys rock for replying to such a dumb ass who forgot to put the type of boat that he has. A 2007 GP1300R is what I have. Thanks again!

  7. #7
    Speedaddict's Avatar
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    I tried pulling a 14/20 on my 05' without a milled head (150PSi) and the holeshot was a complete disaster. Rpms on Top were low too...

    I was able to run it when i had installed:

    Intake Air Filter
    Head Milled to 150psi
    Reed Stuffers
    D-Plate
    Efi Controller

  8. #8
    Speedaddict's Avatar
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    After I got the V-Force III Reeds, Keyway, I got a 14/23 I was able to pull it along 7100RPM+ ...

  9. #9
    Chrisrokc's Avatar
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    You will be fine with a 14/20 if you have VF3's at least and all the other basic mods besides a head and keyway.


    I am running

    Fercho VF3's
    Open Throttle Bodies
    Riva D-plate (slightly opened)
    Fercho Style Jetworks
    Riva EFI Controller
    WaveEater Clips and Couplers
    Side gapped plugs

    That is all motor wise and it runs like a champ. Great hole shot and 71-72 mph with out everything being tuned perfect; plate, efi, tabs. I am sure I will need to repitch my 14/20 after I go with a head and bump the timing either with the keyway or ecu upgrade... if advent ever does deliver what they promise.

  10. #10
    WATER WOODY's Avatar
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    Oh,its an 07' ...... You have the big hub pump and im not sure if there is a Dynafly 13/19 prop.Might have a 14/20 pitched down.I will check on the 13/19 Dynafly.A Concord will fit but its not the right hub size.

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