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  1. #1

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    XPL- tapping the pump shoe for extra water lines

    I've never done this. I need to add 2 water lines off the pump.

    What is the best way to do this?


  2. #2
    Ziggy's Avatar
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    What pump? Brass or Skat pump is more robust for tapping. Generally anywhere equally spaced around the circumference at the pressurized section will doo. Make sure you allow for steering and trim rods. Away from the exhaust is good.

    1/4-18 tap, 7/16 drill

  3. #3
    2Blue's BFF! dsolie's Avatar
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    Ziggy, he's talking about the transom plate... His pump is already tapped for dual.

    Matt, use the flush fitting. Find an adapter that reduces it from hose size fitting to whatever size your pump tap is..

  4. #4
    Master of the Dooniverse
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    Or you could use a bulk head fitting to go through....cuz you'll need hose connections on each side (inside and outside the hull)

  5. #5

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    After looking at it, it looks like the flush fitting is a good one to use.

    I think for the second line, the speedo wire input is a perfect spot using a bulk head. See any problems with that?

    Also, when hooking up the 3 water supply lines, Does it matter which one feeds the head?

    I have 2 1/2" lines that both go to the head, one Ys off into the 2 top head fittings, and the other is the stock 1/2" input line that goes to the main head input.

    Concern being properly flushing the motor. Going though the top of the head vs. into the main input in the head.

    EDIT***

    you guys have seen a lot of this stuff. I pulled off the Bilge pump hose from it's pump plate fitting and, the fitting has not been drilled out, which means no water could be pumped out except from the bailers. Reason for this?

  6. #6
    Ziggy's Avatar
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    I should probably have read this title of the post more carefully

    Here's one method, but this application uses LOTS of water. You won't need the extra outlet.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
    2Blue's BFF! dsolie's Avatar
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    Jeezzz Zig.. That's A LOT of water..

  8. #8

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    Quote Originally Posted by Ziggy View Post
    I should probably have read this title of the post more carefully

    Here's one method, but this application uses LOTS of water. You won't need the extra outlet.
    That looks nice, very nice.

    So you have 4 lines..... now for questions.

    1) why did you tap the pump where there was already water holes?

    2) using the bailer bosses on the pump method, can you get up to a 1/2" line on the inside of the pump support by drilling those holes out?

    3) what the heck is that large red line with the copper T in it? water out? Is that your only water out for all that water in??

  9. #9
    Ziggy's Avatar
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    Quote Originally Posted by dsolie View Post
    Jeezzz Zig.. That's A LOT of water..
    It's a LOT of engine Plus oil cooler. Plus it runs EGTs around 1800F, so it needs a steady supply through the exhaust.

    I have a line for the oil cooler, a line for the engine, and the two that are coming out the bailer ports are feeding the exhaust system.

    Still in development. I figured it's better to scale back than to starve the demand.

    Yes, it's a GSX-L.

  10. #10

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    The two bailer bosses will not work as I need 1/2". I just went out and looked.

    I'm just going to use the speedo hole and the flush piece, although that would be soooo nice to have everything just bolt right up and no hoses all over the place back there.

    Zig... did you tap the pump where you did becuase of pressure, or convenience?

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