Official 2003.5-2008 340 Sundancer Thread

Discussion in 'Sport Cruisers' started by Zorba, May 17, 2013.

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  1. ndulgers

    ndulgers New Member

    9
    Sep 15, 2015
    Florida
    2008 340 Sundancer
    8.1L Horizons w/VDrives
    Thanks!! looks great
     
  2. Don Barrett

    Don Barrett New Member

    4
    Feb 17, 2019
    LI. New York
    2003.5/340DA
    8.1 Horizon
    Hello all. Just got our first and only boat two years ago,it came from Potomac river so was in fresh water. It’s now in peconic bay. Anyway we bring it home for winter storage . Going into cabin last week I noticed the reverse polarity lights were light and don’t remember it last season. All lights and outlets work fine and had a goldenrod that worked fine all winter. I then realized I used a different extension cord. Changed it and light out. So the question is did I do any damage that I can’t see at this point?
     
  3. Korkie

    Korkie Active Member GOLD Sponsor

    606
    Feb 2, 2016
    Leonardtown, MD Potomac River / Chesapeake Bay
    340 Sundancer 2006, Garmin 7612, xHD Radome
    Merc 496 Mags
    Bravo III Drives
    Hard to tell. If everything is working properly - i.e. shore power and battery charger, just may be a watch and see. I had that happen to me at a marina once, but recognized it right away. One 30 amp tower gave me reverse polarity and the one 20 feet away was fine. ? ? ? No ill effects, but was only connected briefly. I now make sure my main panel breakers are off before I plug in, therefore it forces me to check it before it gets to my system.
     
  4. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    Twin 8.1 V-drives

    More than likely no problem. One big note here - if your 2003.5 boat was in fresh water you did confirm that your manifolds are NOT aluminum. Boats from those years in fresh many times had the AL manifolds that seemed to last very well. That is not true for use in salt water where they deteriorate quickly. Simply check with a good magnet.

    -Kevin
     
  5. Don Barrett

    Don Barrett New Member

    4
    Feb 17, 2019
    LI. New York
    2003.5/340DA
    8.1 Horizon
    Thanks. I’ll find out soon when I try and start motors and make sure no leaks before it goes in. Also found one of the bolts that hold the transom zinc was broken. And it was the bolt hooked to grounding system. Wondering when I repair if I should run a jumper to second bolt so if something like this happens again at least I’ll still be connected to zinc
     
  6. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    Twin 8.1 V-drives
    That sounds like a good idea.

    -Kevin
     
  7. liv2ryde100

    liv2ryde100 Active Member

    507
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    Anyone running the seablazex underwater lights from lumitec? Seems to be some good sales on them. I was wondering how many u have on transom, 3 or 4?
     
  8. mnm99

    mnm99 Well-Known Member

    Oct 2, 2015
    Long Island
    2004 340 SeaRay Sundancer
    Twin 8.1 Merc
    What kind of deals are they? I make my own, but wonder what they cost. Thanks
     
  9. liv2ryde100

    liv2ryde100 Active Member

    507
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    i saw them on hodges marine for 212$ a piece
     
  10. ndulgers

    ndulgers New Member

    9
    Sep 15, 2015
    Florida
    2008 340 Sundancer
    8.1L Horizons w/VDrives
    I have a wiring question about my 2008. I just had to replace my shower sump box and the other bilge pump and switch in that same area below the cabin floor because of a rusty mess left by the PO when the AC pan rusted. They were such a mess that I ripped it all out without noting the existing wiring. I took a multimeter and identified 2 negative and 2 positive wires. I have since wired the pump and switch in the shower box and the other pump and switch and both work from their respective float switches but I have 2 extra brown wires coming from the boat and I can't seem to find out what they are for. I thought maybe a manual switch but tested the switch on the helm and that switch only makes the pump in the engine room turn on. what am I missing? Any help would be greatly appreciated.
     
  11. M Prod

    M Prod Well-Known Member

    959
    Oct 6, 2017
    North Vancouver, BC
    2005 Sundancer 340
    Aquapro Dinghy w/ Honda 8hp
    Kohler 5KW Genny
    Raymarine Electronics
    8.1 Horizons /V Drives

    I just did this last season for different reasons, but don’t recall the exact wiring setup. If you can wait a day or two, I’ll get to the boat and post pics ..unless someone else is able to jump in sooner of course.
     
  12. ndulgers

    ndulgers New Member

    9
    Sep 15, 2015
    Florida
    2008 340 Sundancer
    8.1L Horizons w/VDrives
    That would be great. Thanks!
     
  13. Attackbeagle

    Attackbeagle New Member

    4
    Aug 19, 2017
    Louisville, TN
    340 Sundancer 2007
    Mercruiser 8.1
    Question: I want to keep an extra set of duckbill valves on my 2007 340. I cannot determine if the 340 uses 1.5 inch or 2 inch valves. Anyone know the answer?
     
  14. Korkie

    Korkie Active Member GOLD Sponsor

    606
    Feb 2, 2016
    Leonardtown, MD Potomac River / Chesapeake Bay
    340 Sundancer 2006, Garmin 7612, xHD Radome
    Merc 496 Mags
    Bravo III Drives
    I did mine 2 seasons ago because I had lost suction. NOT a fun job and certainly not one I would want to do while away on a trip, etc. If you are contemplating having a problem, change them out now so you know you are good to go. You will also want to clean out the rest of the system while you have it apart. I cannot remember what size mine were (2006 340), but I pulled the unit apart and while I cleaned everything up, the wife ran to West Marine and got the replacements. I am sure someone will pipe in here with the size, but I cannot remember. Also, take pictures as you take it apart, very important the duck bills go back in exactly how they came out. There is 4 of them.
     
  15. Windjammer

    Windjammer Active Member SILVER Sponsor

    442
    Nov 10, 2007
    Marietta, GA
    340 Sundancer 2006
    8.1 Mercruiser V-Drives
    2" on our 2006 340DA
     
  16. Attackbeagle

    Attackbeagle New Member

    4
    Aug 19, 2017
    Louisville, TN
    340 Sundancer 2007
    Mercruiser 8.1
    I would offer to go to West Marine if my wife wanted to change them!! I know that won't happen!!! I have great suction now, so I will wait until it fails. Most of our trips are not very long! thanks for the info. When I am at the boat, I may be able to find the manual for the head system. I saw the other reply that someone said they are 2 inch. Glad to know there are 4 so I can keep them handy.
     
  17. aarongrz

    aarongrz New Member

    19
    Jun 5, 2009
    MI
    05 340DA
    Previous
    03 280DA
    8.1s with V Drives
    5kw Kohler
    I have 2 Seablaze X Spectrums. I'll take some pics and post this week. I'm very happy with them.
     
  18. JPGator

    JPGator Active Member

    215
    Apr 25, 2019
    2007 Sundancer 340
    Mercruiser 8.1S
    Has anyone replaced their Main Battery Solenoid Switches? Easy to do? My OCD has taken over and since the bulbs have burnt out I ordered their replacements.
     
  19. liv2ryde100

    liv2ryde100 Active Member

    507
    May 17, 2012
    long island
    05' 340 dancer
    Twin 8.1's
    Yes please send pics that would be very helpful!!! Thank you!!
     
  20. Bwardz50

    Bwardz50 New Member

    23
    Jul 3, 2018
    Lutz, FL
    2006 340 Sundancer
    2005 Mastercraft X2
    8.1 Mercruiser Horizons with V-Drives
    MCX 350 Indmar with V-Drive
    Super-easy, I just did mine. Wires are color-coded so it's hard to mess up. Do one at a time so you can match the other one.
     

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