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Thread: Fitting low water pick up to outboard engine

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  1. #1
    phillnjack
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    Default Fitting low water pick up to outboard engine

    High folks
    something ive never done and never seen in the flesh is a low water pick up for outboards.

    Im seriously thinking about raising my engine up around 4 to 5 inches to ride on the bullet or close to the
    bullet and dont know exactly how or where to make the low water pick up. ?

    Any advice or ideas including pics would be very good for me, i have a few ideas but probably totaly wrong.

    I was thinking about a transom mounted pipe with a slash cut to force water up when on the move,
    but will this work at slow speed ?

    The impellor is a lot lower in the water than a transom mount would be at slow speed and not sure if it would prime itself etc.
    is it best to fit one on the lower part of the gearbox at the front of the bullet ?
    my engine is a 56ci omc with normal gearbox not a racing gearbox, and realy dont want to change it.

    Also are nose cones the way to go, and do they realy just stick on with epoxy and stay put ?


    any advice will be good




    phill..

  2. #2
    FFX-61
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    welded on, an SST 60 foot is the stock go fast set up for that Moda, heard someware that a Fast Fred Nitro foot is hot, that would fit.... thinkin there's a shot on hear ....

    Part one of "Secrets of the OMC Mod 50" : http://www.boatracingfacts.com/forums/showthread.php?t=2052

  3. #3
    phillnjack
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    I dont want to change the gearbox.
    I want to keep the same gearbox and just put a low water pick up on it.
    I like the nosecone type of thing sold by bobs machine shop, but thought it very strange that
    it comes with epoxy to STICK it on.
    dont think i would trust a stuck on cone, but welded on yes, maybe they mean tack welded an the
    epoxy is just for finnishing and smoothing off ?.

    but i need to know a bit more about what i have to do to the original holes and where to drill etc.
    spme pics of anyone work they have dont to make this would be very good..


    phill

  4. #4
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    I had a friend that decided to remove his nosecone it was bonded only by the epoxy kit inculed with kit.
    He chiseled, cut. beat an cussed a long time. Some notching an fitting is needed to fit various cases.
    Once a proper fit an aligmnent are achived you can tack weld then bond.

  5. #5
    Team Member LittleCharger's Avatar
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    Where is the bullet relative to the bottom (pad) of the boat now? Seeing that you want to raise it 4 to 5 inches now it's pretty buried. I would invest in a water pressure gauge and raise the motor to see if the boat reacts to your liking. You should be able to raise the motor such that the center of the bullet is 2 to 2.5 inches below the pad and still have plenty of water pressure even without the low water pick up. Do you have access to surface piercing props to run when you raise the motor? Not all props liked to be surfaced.

    Cheers,

  6. #6
    phillnjack
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    at the moment the centre of bullet is about 5 to 6 inches below the lowest point of transom.
    My engine is a longshaft, normal 20 inch transom on the boat, (actualy 20.5 inch.)
    I cannot raise anymore untill a jack plate is fabricated to what is gonna happen to handling etc.
    I will be using the boat for different things,so an adjustable plate will be need so i can run deep when at sea in
    rougher water at a reasonable pace.
    water pressure guage is a good idea and was thinking about ptting a fitting on the exhaust plate where there
    is a plugged off area with allen screw in it.
    (not sure if this is a good place, but got to be better than putting a tee in the pee hole as would be getting a
    true pressure reading of whats comming from the water pump)

    quote
    "You should be able to raise the motor such that the center of the bullet is 2 to 2.5 inches below the pad
    and still have plenty of water pressure even without the low water pick up."

    centre of bullet is 7 inches from cav plate so to get bullet 2 inch below boat bottom would need the engine rasie by 5 inches.
    I honestly dont think ill get any water at that height, the water pick ups are a few inches above the bullet !!!!!



    phill

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