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  1. #1

    Join Date
    May 2006
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    Smith Lake
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    Need Input Stage 3 +++

    Guys here is here i am at....I have a complete Riva stage 3 boat that i just had to put a new motor in, i upgraded to a larger charger et 68-140......Now i bought a RRFPR and 15/22 to upgrade my 15/19 three blade...I am running 50 lb injectors etc from riva....Any ideas where the base pressure needs to be set etc on this set up while i buy a afr guage? Do i need diff injectors. Here in alabama its hot 85plus and humid all summer long... Also with Jims plate (not open loop) have any of you seen more than 1 mph on glass...Mt goal is to run 8450 and 83 mph.....What do i need to bend the 15/22 to get me in the ballpark? Thanks agin


  2. #2

    Join Date
    May 2006
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    Smith Lake
    Posts
    286
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    Forgot...

    Will i need a walbro fuel pump or will the stock suffice etc???i have heard that since my internals are stock i should be okay? Is that correct?

  3. #3
    Gus13letter's Avatar
    Join Date
    Apr 2008
    Location
    Tampa Bay, FL
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    I would reccomend the Walbro.
    My base pressure with stage 3 and Rude1 is 51 psi. I am not sure where you would need yours, but I would probably guess around 55- 56 but I would set it at 60 for now. That will probably be rich but till you get your AFR I would not do WOT runs.

  4. #4
    Water4fire's Avatar
    Join Date
    May 2005
    Location
    New Braunfels TX.
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    You will end up in the 57-60 range in the summer.

    But I would get a A/F gauge as you just put a new motor in your boat, so why not keep it safe and tune her in.

    .

  5. #5

    Join Date
    Feb 2006
    Location
    Birmingham AL
    Posts
    2,924
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    Problem his he couldnt tune a bugger. Robin you are going to need to learn alot about these skis and turning wrenches. He is going to need a bullet proof set up please help him out.

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