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Thread: Cooling System Question

  1. #1
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    Cooling System Question

    I removed the lower unit for repair. Drive is a Alpha SS and want to run engine on the hose in yard. Can I hook water hose to water inlet in upper to circulate water to running engine? Is that possible? What other options are available?

  2. #2
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    Cooling

    I have done that many times, should not be a problem.
    Kenny n.
    Retired Mercrusier, OMC. Volvo & Berkeley shop owner.
    1980 18' Classic, 383 MPI/ Alpha
    Riverine Support, Mekong 69

  3. #3
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    The water has to go through the water pump or the impeller will burn up.

  4. #4
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    I removed the lower unit for repair. Drive is a Alpha SS and want to run engine on the hose in yard. Can I hook water hose to water inlet in upper to circulate water to running engine? Is that possible? What other options are available?



    Quote Originally Posted by wwahl View Post
    The water has to go through the water pump or the impeller will burn up.
    True , when the lower unit is still 'on' !
    Just because something's old doesn't mean you throw it away !

  5. #5
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    On my Minx w/an Alpha, I removed the drive driven pump,
    added a crank driven pump and a transom mounted pickup.
    It solved all sorts of problems.
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

  6. #6
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    yes

    Quote Originally Posted by tmdog View Post
    I removed the lower unit for repair. Drive is a Alpha SS and want to run engine on the hose in yard. Can I hook water hose to water inlet in upper to circulate water to running engine? Is that possible? What other options are available?
    This works fine. The water pressure from house not quite what the sea pump in the drive is but I never had a problem...
    Thank you, Patrick
    1994 18' Classic 350Mag Alpha

    Previously owned Donzis -
    1996 22' Classic, 502Mag Bravo
    1987 20' Minx, 350Mag Alpha
    1975 18' Classic, 350Chevy Volvo 280

  7. #7
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    Thanks to all of the helpful replies. GC, Removed eng. numerous time but always overlook crank driven pump. For a Alpha, only pump to use.

    10 hrs on a SBC 406 and a valve or spring let go. Doing 35 rpm and heard a metallic ping. Lost some power and exh. seemed odd. ran it aground,and lifted hatch , nothing. Started promptly and headed for the ramp. Top end tear down next week. Hope its top end.

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