[Question] Do Engine exhaust pipes get filled with water?
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Do Engine exhaust pipes get filled with water?

  1. #1
    Junior Member Jonathanvc's Avatar
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    Default Do Engine exhaust pipes get filled with water?

    Does it matter where u have your exhaust?
    My first engine will not be a very big one, and I think it looks nicer when the 2 exhaust pipes "build in" the hull next to the jet drive like on the first pic...


    Main questions;

    If the exhaust pipes are lower like in the first pic, do they get filled with water?

    Can u make holes yourself for the exhaust pipes, if the back end of your hull doesn't have holes?
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  3. #2
    Senior Member 74Bonneville's Avatar
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    Water is designed to run through the exhaust logs. There is a in, an out and an exit. Check the JBP website for diagram. I think I've seen it there before.

    Yes you can drill holes in your transom for these.

    They will restrict performance, but if your going mild then they would work fine.


  4. #3
    Senior Member 67weiman's Avatar
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    The exhaust tips that exit below the water line have internal flappers to prevent water from rushing in. Some water will get in but shouldn't make it past the snails on the exhaust manifolds. Yes, you can make your own holes for them. Every boat came out of a mold without any holes at all.

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  6. #4
    tintingsandiego krusn56's Avatar
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    Logs and water jacketed headers are double walled with risers and you can ad a flapper to tip for reversion.
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