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Thread: Pre AOTH Debacle

  1. #1
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    Pre AOTH Debacle

    I noticed the drive train slipping the last 2 times I had the TR out.
    On Monday I removed the drive and had it checked. I was told it
    was OK. That left the prop hub and the Bravo coupler.
    The prop hub was welded, so that wasn't an issue, which left the
    coupler. The boat still has less than 10 hours on the drive train.
    So Friday I took everything loose and drained the closed cooling
    system. Saturday, we (Rick Bagwell, a Criterion owner was helping)
    pulled the engine and changed the coupler. We also took the
    opportunity to change the oil and filter, and new coolant.
    Also, I liked the first crank driven pump I used. I inadvertently
    blew the seal out of it by pressurizing the raw water system by
    closing the transom pickup and turning on the hose (I do have a
    relief valve). Anyway, I installed a new seal in the first pump and
    re-installed the pump.
    The most frustrating thing is there's no evidence of failure in the
    coupler, see picture. There was no odor, no juddering, and all you
    see in the picture is grease across the front face.
    Any comments, or insights?
    Attached Images Attached Images
    • File Type: jpg 1.jpg (97.7 KB, 159 views)
    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

  2. #2
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    Maybe I'll re-shoot the coupler picture. My hands aren't
    as steady as they were. So today we got the engine back
    in, fluids in and ready for the drive to go on. The
    frustrating thing is the calendar and we're leaving Wednesday
    for Kentucky.
    Here's a couple more pictures from yesterday.
    Attached Images Attached Images
    • File Type: jpg 2.jpg (195.9 KB, 51 views)
    • File Type: jpg 3.jpg (141.0 KB, 47 views)
    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

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    What a PITA...crossing fingers that you've got it knocked now.
    "I don't have time to get into it, but he went through a lot." -Pulp Fiction

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    Got my fingers crossed for you.
    Looks like I will be boat less for the event..Ed

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    Ed, there's always a seat for you.
    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

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    Quote Originally Posted by Ghost View Post
    What a PITA...crossing fingers that you've got it knocked now.
    Mike, it is a PITA. It'll be ready to run tomorrow.
    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

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    Hope ya got it figured out George

  8. #8
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    George, like you, we are all waiting for tomorrow's answer.

    Good luck

    Ken

  9. #9
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    why the welded prop hub?

    you need some give-or-take somewhere along the line..
    Charter Member - WAFNC, SBBR, KWOSG
    1955 Perfect Mate
    1986 Hornet III, 502-415 TRS

    www.donzi.org


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    A failed coupler makes a mess

    If the coupler was slipping, there'd be smoke and crap everywhere. I'd be double checking the drive clutches.
    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

  11. #11
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    I can't remember--is the drive a Bravo1? B1X? B1XR?
    "I don't have time to get into it, but he went through a lot." -Pulp Fiction

  12. #12
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    George,

    When my coupler went south, it looked like yours with no sign of burnt rubber nor smell. So, it is conceivable that it went. As far as a cause, the only thing I can think of is the alignment was off somewhat.

    Bob
    Member - WAFNC
    1997 22 Classic (sold)
    1997 Formula 271 Fastech
    502 Mag MPI

  13. #13
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    Quote Originally Posted by BUIZILLA View Post
    why the welded prop hub?

    you need some give-or-take somewhere along the line..
    I suppose that's a good question. I bought the prop from a member here
    and that's the way it was built (Hydro Q4).
    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

  14. #14
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    Quote Originally Posted by Ghost View Post
    I can't remember--is the drive a Bravo1? B1X? B1XR?
    Mike, it's a Bravo I. In fact it's a bit of an antique, the 1st year of production (summer of '87).
    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

  15. #15
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    Quote Originally Posted by Tidbart View Post
    George,

    When my coupler went south, it looked like yours with no sign of burnt rubber nor smell. So, it is conceivable that it went. As far as a cause, the only thing I can think of is the alignment was off somewhat.

    Bob
    Bob, that seems to be it. I checked it today and found it to be a very small change.
    Mostly it was a small difference in height from one side to the other.
    I was able to get a much better pattern and it was much easier to insert
    the tool.
    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

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