Running out of water
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Running out of water

  1. #1

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    Default Running out of water

    Im not new to boating, but new to jet boating, can someone tell me if there is a good way to run my boat (at my house) and wet the jet pump. I can set up the engine no problem, but was wondering what an effective way would be to introduce water to the pump. Some mentioned to me I can stuff a hose into the outlet of the pump while running, but that didnt seem do right to me,
    thanks

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    Senior Member T-Train's Avatar
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    Quote Originally Posted by Sunkisst6160 View Post
    Im not new to boating, but new to jet boating, can someone tell me if there is a good way to run my boat (at my house) and wet the jet pump. I can set up the engine no problem, but was wondering what an effective way would be to introduce water to the pump. Some mentioned to me I can stuff a hose into the outlet of the pump while running, but that didnt seem do right to me,
    thanks
    The best way is to disconnect the drive shaft. Then you just have to hookup the water to the engine.

  4. #3
    mo balls than $cents$ IMPATIENT 1's Avatar
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    DON'T RUN THE PUMP OUTTA THE WATER!!! disconnect the pump if you have to , but don't run the pump outta the water!

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

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    I thought of disconnecting the drive unit, but there are two universals, one at the engine and one at the pump,
    If I disconnect, which is not difficult, the universal at the engine will flop around and cause serious damage, and it cannot be removed without major dissassembly, so thats not practical. So there is no way to run this engine unless Im in the water??

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by Sunkisst6160 View Post
    I thought of disconnecting the drive unit, but there are two universals, one at the engine and one at the pump,
    If I disconnect, which is not difficult, the universal at the engine will flop around and cause serious damage, and it cannot be removed without major dissassembly, so thats not practical. So there is no way to run this engine unless Im in the water??
    take the driveline loose from the power take off (back of crankshaft)

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    Senior Member Delemorte's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    the ensueing fire would likely be extinguished by the sinking however

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    Quote Originally Posted by Sunkisst6160 View Post
    ....... So there is no way to run this engine unless Im in the water??
    The general concensus of the experts is that running the jet on the trailer will cause accelerated wear on the impeller and wear ring. This is made worse if there happens to be grit and debris that has been kicked up from the road while trailering.

    The best way is to disconnect and remove the universal joints.

    That said, some people will run thier jets on the trailer by squirting water in the jet intake or bowl or back through the enging cooling water port. If you make sure the jet is clean, flood with water and limit the run time to the minimum you can do this with little to no damage/risk.

    If the jet is old and near needing a rebuild then it is less of an issue, but a new, tight pump you risk loosing efficiency and hurting performance by increasing the impellor/wear ring clearance.

    Doug

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    BTC cardcarrying member sunkisst's Avatar
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    Quote Originally Posted by jetboatperformance View Post
    take the driveline loose from the power take off (back of crankshaft)
    If you disconnect at the back of the crank,You may have enough room to slide the shaft,and/or the u-joint assy back into the pump far to gain clearance to have enough air-gap to run your engine without damage to parts. This works for me in my application. Doesnt neccesarilly mean it will work in your application.Be careful and good luck!!! Where you get headers like DAT ?
    Last edited by sunkisst; 09-30-2009 at 05:25 PM. Reason: SMART ASS

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by sunkisst View Post
    If you disconnect at the back of the crank,You may have enough room to slide the shaft,and/or the u-joint assy back into the pump far to gain clearance to have enough air-gap to run your engine without damage to parts. This works for me in my application. Doesnt neccesarilly mean it will work in your application.Be careful and good luck!!! Where you get headers like DAT ?
    good advise, i've had a couple boats i could do that way, i just used zipties to hold the shaft away from the pto, let r rip tator chip

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

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    Quote Originally Posted by Sunkisst6160 View Post
    Im not new to boating, but new to jet boating, can someone tell me if there is a good way to run my boat (at my house) and wet the jet pump. I can set up the engine no problem, but was wondering what an effective way would be to introduce water to the pump. Some mentioned to me I can stuff a hose into the outlet of the pump while running, but that didnt seem do right to me,
    thanks
    That will work if you got the motor cover for water... All you need is water around the Wear Ring as a Lube, thats what it uses in the water.
    Just keep some water going on it..

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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Quote Originally Posted by Sunkisst6160 View Post
    So there is no way to run this engine unless Im in the water??
    Sure there is.

    Run a 4" hose from the nearby fire hydrant to your intake, open the hydrant wide up, and fire it up. That should keep things wet enough, as long as you don't zing the throttle too much.

    I always fire mine up backed into a lake.
    "As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."
    H.L. Mencken

    OBAMA: Some people deserve this.
    The rest of us are being dragged along kicking and screaming.

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    Senior Member Fonz69's Avatar
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    Or just ask santa for a Jetaway and never worry about it again

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    Senior Member wpy3's Avatar
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    What about the packing, doesn't that need water to help lube it also?
    Quote Originally Posted by [email protected] View Post
    That will work if you got the motor cover for water... All you need is water around the Wear Ring as a Lube, thats what it uses in the water.
    Just keep some water going on it..

  16. #14
    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Quote Originally Posted by wpy3 View Post
    What about the packing, doesn't that need water to help lube it also?
    Not for just a minuite or 2, now if you intend to run it all day on the trailer.........
    "As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron."
    H.L. Mencken

    OBAMA: Some people deserve this.
    The rest of us are being dragged along kicking and screaming.

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