Used boat - replaced many things - what else to check?

Discussion in 'General Maintenance/Repair Questions' started by Boater71, Jun 23, 2019.

  1. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    I purchased last year a 2008 SR310 used boat from a reputable marina. the hull/shell were in immaculate condition as the boat was stored high in a boat garage. The engines are Merc 6.2l DTS Seacore 320hp i/o with Bravo 3's with AXIOS - 200 hours. The boat had many issues and the marina worked on replacing all the parts needed - the boat surveyed very well through a reputable captain. I'm trying to see what else I can ask for before final delivery. Here is the list of updates by marina:
    • Starboard engine:
      • rebuilt with valve job, new manifolds and risers
      • Replace Fuel Module
      • Replace Distributor
      • Replace Starter
      • Replace Risers, Elbows and Manifolds
      • Replace Head Gasket
      • Replace Spark Plugs
    • Replace Water Pressure Senders on each engine
    • Replace carrier bearing on starboard drive
    • New VHF radio and VHF antenna, Garmin GPS head unit and antenna
    • Replace Glomex
    • Replace prop nuts
    • Change Anodes
    • Replaced all hoses on each engine
    • Initially Replaced both lower drives and then replaced upper drives (basically new Bravo 3?!?!?)
    • New clutch cable
    • Few cosmetic replacement (new Isenglass in Canvas, light bulbs in cabin, few)
    • I have asked to check end of life for Risers and Manifolds on the port engine
    what else should i be looking for before final delivery or ask for preventive maintenance I can ask for? Boat was stored and launched by the marina. I did not pay for any of these services.

    appreciate your input!!!
     
  2. NorCal Boater

    NorCal Boater Well-Known Member SILVER Sponsor

    Jan 24, 2008
    Covington, LA
    Cobalt CM23
    GM SB 383" Stroker" Alpha Gen I
    At first glance, it looks like much has been done. But then as I re-read your post I'm asking myself how a boat that is only 11 years old needed so much repaired or replaced. You've asked what else you should be looking at and to be honest, with what you are sharing, it could be anything. It seems a boat that was apparently grossly neglected could have anything go wrong with it. I'm not sure how you'd know what to check.

    I think if it were me, and the reputable marina is in such a giving mood, I'd ask for some kind of all-boat warranty coverage for 3-6 months. Once you start using this boat and put some hours and use on it, other, previously unforeseen issues could pop up. I think I'd want to know I had some assurance I wouldn't be left hanging in the wind. A request like this may be unprecedented but at this point, what have you got to lose?

    I hope you got a smokin' deal. Best of luck to you.
    Shawn
     
    stephens013 likes this.
  3. Todd320

    Todd320 Well-Known Member SILVER Sponsor

    857
    Jul 21, 2016
    St. Petersburg, FL
    2007 Sea Ray 320DA
    Twin V-drive 5.7L 350 Horizon
    Did the surveyor provide a report? Mine gave me a full 30 page report on every system and the condition and any issues (except the engines). More importantly, I would hire a mechanic to survey the engines. He can provide real advice because he is looking at and testing those engines. I’d be extremely cautious about engines that are over 11 years old and only 200 hours. No engine does well just sitting around. How did the engines perform at sea trial? Did they get up to the recommended rpms at WOT?
     
  4. Todd320

    Todd320 Well-Known Member SILVER Sponsor

    857
    Jul 21, 2016
    St. Petersburg, FL
    2007 Sea Ray 320DA
    Twin V-drive 5.7L 350 Horizon
    I went through about 6 months of replacing various parts on the outside of my engines. Relays, fuses, water pressure sensors, IACs, etc, and now recently, water pumps and every pulley. The water pumps on my engines tend to wear out after 10 years (350 MPI Horizon) but I have v-drive inboards, so not sure if the water pumps are the same on a stern drive.
     
  5. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    Thank you for your feedback. I did a professional survey, boat performed to specs, hit recommended rpm for WOT, and received the detailed 30+ page report - received very good condition. Did the compression test which was good as well. I did get the boat for a good deal - I think. To cover my risk, if I have to replace one engine, I would be at low end of market value or at survey value. With new Bravo 3's, that is even a bonus. IN the spring, Marina discovered a leaky lower drive after launch, pulled the boat out and replaced with new ones, then replaced the uppers and new clutch cables.

    I'm just trying to be proactive and estimate end of life for parts which can fail.

    I dock in Freshwater and boat in salt water. I did ask about the summer warranty and received assurance that I will be taken care off - they have so far!
     
  6. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    A friend of mine had problems with his 2011 Merc 8.2 Seacores and had extensive work done on his due to water intrusion on one engine (replaced). Apparently much of it was covered under warranty as there was an known issue that Merc was covering. So, its not necessarily the fact that the boat was neglected. See if you get get the details behind why it was all done.

    As far as what else... I would make sure all the systems and sensor connected to the axius are working.

    -Kevin
     
  7. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    thanks Kevin, good point. I will ask about what happened and why? The boat was not much neglected as much as not used as often. I have the service records from the day the boat hit the water (09) until today. It was serviced and maintained by the marina with all the services, warranty claims and repairs.

    The Axius systems worked when I used it the few times I was on the boat - not sure how to test or stress test it!!
     
  8. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    Sounds like you've covered your bases. Last item for your checklist should be - GO BOATING! She'll tell you what she needs moving forward....weekly, if not more frequently. ha.
     
    Boater71 likes this.
  9. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    as frequently as I can!!!!
     
  10. NorCal Boater

    NorCal Boater Well-Known Member SILVER Sponsor

    Jan 24, 2008
    Covington, LA
    Cobalt CM23
    GM SB 383" Stroker" Alpha Gen I
    Just to be clear....you keep stating "clutch cables" and boats don't have clutches at least in a Bravo III. Are you referring to "shift cables"?
     
  11. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    Shift cable!! initially mechanic said it's the clutch cone (that is why clutch cable stuck in my head). They ended up replacing both upper and lower drives.

    Thank YOU for reading and answering.
     
  12. Just For Fun

    Just For Fun Member

    74
    Feb 16, 2019
    Southern California
    Searching for a 2006 - '07 320 Sundance w/twin T-496 Magnum MPI Bravo III
    and 5.0 KW generator
    Oars for now!!
    "I did ask about the summer warranty and received assurance that I will be taken care off - they have so far! " GET IT IN WRITING!!!!!!!!
     
    Boater71 likes this.
  13. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    We started using the boat for almost 10 hours plus spent couple of nights. Here are reading I get on VV:
    Port
    Rpm: 4240
    Temp: 162
    Pressure: 59.4 PSI
    Battery: 13.9v
    Pressure: 20.7

    Starboard:
    Rpm: 4250
    Temp: 163
    Pressure: 50.7 PSI
    Battery: 13.5v
    Pressure: 17.2

    The values are pretty consistent at various rpm speeds. The question I have is the pressure deltas, what does the difference represent?
     
  14. Craig

    Craig Well-Known Member GOLD Sponsor

    534
    Feb 8, 2007
    Maryland
    2006 320 Sundancer
    twin 350 Horizon V drives
    Rpms look to low for those motors. 4800 to 5200 I think is spec. Everything else looks fine to me. Boat trimmed properly? Check and make sure prop pitch is what is recommended.
     
  15. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    Thanks Craig, I was not doing WOT. I was cruising around at the time. I was mostly cruising around 3800 so I thought to take picture when I was able. As for trimming the drives, I Wahbe not done that year.
     
  16. Craig

    Craig Well-Known Member GOLD Sponsor

    534
    Feb 8, 2007
    Maryland
    2006 320 Sundancer
    twin 350 Horizon V drives
    Let her eat and see if it makes it to recommended wot range. Then you'll know your set.
     
  17. Boater71

    Boater71 Member

    157
    Mar 5, 2018
    Boston, MA
    2008 Sea Ray 310 Sundancer
    MX6.2 MPI Bravo III DTS with Axius and SeaCore
    Kohler Genset
    Thanks. Will try it. How long should I run it @WOT? 5 minutes?
     
  18. Craig

    Craig Well-Known Member GOLD Sponsor

    534
    Feb 8, 2007
    Maryland
    2006 320 Sundancer
    twin 350 Horizon V drives
    I usually just wind it up for a minute or two a couple times a season.
     
    Boater71 likes this.

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