Urgent - Running a Sea Ray 460 Sundancer with One Engine

Discussion in 'Announcements & FAQs' started by CTSurfrider, Aug 2, 2019.

  1. CTSurfrider

    CTSurfrider New Member

    Mar 7, 2017
    Stonington, Connecticut
    2003 460 DA
    Cummins 480CE's
    We have to run with a friend from Nantucket back to Newport who is having fuel injector issues. He has Cummins 480
    CEs with ZF transmissions. The plan is to run with one engine at about 10 kts, close the thru hull, and place the transmission in reverse to keep the shaft from freewheeling. We’re looking for any suggestions on if this sounds like a good plan and the Admirals are looking for reading or drink suggestions for the long ride home.
  2. PMC

    PMC Well-Known Member

    Apr 10, 2009
    Long Island, NY
    2001 40 Sedan Bridge
    Cummins 6CTA
    Putting the transmission in gear will not lock the shaft, it is like an automatic tramission of a car, and needs front pump pressure to engage.

    Do you know if the shafts have cross over water lines (being able to supply water pressure from either engine)? If not, you will need to tie off the prop so it does not spin and burn up the shaft seal.
  3. CTSurfrider

    CTSurfrider New Member

    Mar 7, 2017
    Stonington, Connecticut
    2003 460 DA
    Cummins 480CE's
    Thank you for the reply. This was the one issue we were contemplating and were planning to check when we get back to the boat.
  4. FootballFan

    FootballFan Well-Known Member

    Jun 20, 2012
    Marquis 59
    MTU Series 60
    There can be problems with cross over lines back feeding water after a while. I have been told that you are good for 5-10 miles. Other than that pipe wrench or line and secure the shaft.
  5. NotHerDecision

    NotHerDecision Well-Known Member PLATINUM Sponsor

    Jun 28, 2016
    Houston, Texas
    2001 Sea Ray 460 Sundancer
    2014 Seadoo 155 LTD
    2105 Seadoo 130 SE
    2013 Mercury Dinghy
    Cummins 6CTA 8.3L
    The 460 does not come with crossover lines from the factory. It’s easy to run one and I suggest you do. You can also tap a line off of the air conditioner pump to the shaft seal because I don’t believe you can stop the shaft from spinning. The ac pump has plenty of pressure so that would be my preferred method.

    Is the boat in danger? I’m why not get injectors to the boat? I’m available to discuss this on the phone if you want more information/help.


    I can probably have injectors to you on Monday if that’s the only issue but what caused them to fail? If it was fuel then you are taking on another risk.

    Let’s talk.
  6. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    Just tie the shaft off to stop the free-wheeling. and with a non rotating prop, about 10 its is all you will do anyway.
  7. PlayDate

    PlayDate Well-Known Member

    Dec 25, 2006
    Washington DC
    1994 370 Express Cruiser
    454 Mercruisers
    Or....pull the prop, reduce the drag and leave the shaft alone. Long trip.
    Last edited: Aug 2, 2019
    techmitch likes this.

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