Announcement

Collapse
No announcement yet.

3870 water tanks

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

    3870 water tanks

    Just started to build my molds for the 2 piece water tank for my 3870.
    I am using plastic laminated shelving, I will make it in two separate tanks connected with fittings and hoses.
    Iso resin with a vinyl ester liner and gel coat the exterior.
    It has been too cold here in FL to gel coat the 2 sets of tunnels I have sold.
    36 below at international. Falls, MN and the cold has been drifting down the east coast.
    I thought Alaska was cold.
    Pat says: DO-IT-RIGHT THE FIRST TIME!

    Bayliner 3870 "ALASKA33)
    Twin 350 GM power
    Located in Seward, AK
    Retired marine surveyor

    #2
    I would like to add I am not interested in selling water tanks,
    Pat says: DO-IT-RIGHT THE FIRST TIME!

    Bayliner 3870 "ALASKA33)
    Twin 350 GM power
    Located in Seward, AK
    Retired marine surveyor

    Comment


      #3
      Pat,

      If you could post pictures of the build though, I'm sure all 38 owners would appreciate it

      James
      1989 Bayliner 3888, 175 Hinos,
      Hurth 630's Onan 8kw MDKD
      Lowrance Electronics!
      MMSI
      316030379
      Boating on Georgian Bay

      Comment


        #4
        Originally posted by MacPhid View Post
        Pat,

        If you could post pictures of the build though, I'm sure all 38 owners would appreciate it

        James
        Will do, I just started building the mold, but we have near freezing weather here near Gainesville, FL.
        I am completely shut down, waiting for warmer weather to spray gel coat on a paid for pair of tunnels.
        Looks like at least a week or more.
        The tank mold is easy, I will post the info and photos as well as the dimensions of the 2 pieces, 2 so you do not need to tear up the port stateroom floor on a 3870.
        Reason I do not want to sell water tanks is the 72" length and shipping. It takes 2 tanks
        Pat says: DO-IT-RIGHT THE FIRST TIME!

        Bayliner 3870 "ALASKA33)
        Twin 350 GM power
        Located in Seward, AK
        Retired marine surveyor

        Comment


          #5
          Yeah I need new water tank in my Avanti and shipping is nearly as much as the tank. It's 72 inches also. With shipping it's near the $800 mark from some vendors.

          Coast marine will make a new original aluminum for $800 and I could go pick it up. So much to decide.
          1989 Avanti 3450 Sunbridge
          twin 454's
          MV Mar-Y-Sol
          1979 Bayliner Conquest 3150 hardtop ocean express.
          Twin chevy 350's inboard
          Ben- Jamin
          spokane Washington

          Comment


          • boatworkfl
            boatworkfl commented
            Editing a comment
            What are the dimensions of your tank, and can you install it in one piece?
            It is the length and the width that adds up for shipping.

          #6
          72 x 27 x 7 about a 50 gallon tank. I had to cut the floor away to get to it. Tomorrow going to remove it. It's been in real cold here so I haven t worked on it but tomorrow is going to be in the low 30's I might go out and remove it. I would have had it out by now if the factory hadn't tabbed it in with fiberglass.
          1989 Avanti 3450 Sunbridge
          twin 454's
          MV Mar-Y-Sol
          1979 Bayliner Conquest 3150 hardtop ocean express.
          Twin chevy 350's inboard
          Ben- Jamin
          spokane Washington

          Comment


            #7
            Attached Files
            1989 Avanti 3450 Sunbridge
            twin 454's
            MV Mar-Y-Sol
            1979 Bayliner Conquest 3150 hardtop ocean express.
            Twin chevy 350's inboard
            Ben- Jamin
            spokane Washington

            Comment


              #8
              I have a 3818 1988 Bayliner that I want to replace water and septic tank. I would very much like pics and info on how it goes.
              I have a lot of floor to tear out and tubing to replace too.

              Comment


                #9
                CT, I also have a 1988 3818, in all likelihood your holding tank is just fine. However, replacing your black water hoses may (probably) need to be replaced and would be the cause of any odors. I used as much ch schedule 40 pvc pipe as I could, as recommended by all knowledge marine sanitation folks, and high quality sanitary hose. I also eliminated the Y valve as it is illegal to pump overboard in the US.
                Replacing the domestic water tank is on my to do list.
                P/C Pete
                Edmonds Yacht Club (Commodore 1993)
                1988 3818 "GLAUBEN
                Hino EH700 175 Onan MDKD Genset
                1980 Encounter Sunbridge "Misty Blue" (Sold)
                MMSI 367770440
                1972 Chevrolet Nova Frame off Resto-mod in the garage
                Boating on the Salish Sea since 1948

                Comment


                • ctbarbarian
                  ctbarbarian commented
                  Editing a comment
                  PCpete, I'm new to this boat, have you put davits on your 3818 yet?
                  I'm trying to figure out how to carry a 10ft Caribe with a 9.9yamaha.

                #10
                when I installed bow thruster in my 45, I was faced with needing to fab a new 80 gal water tank that was the smaller secondary tank on the 45, located in the floor of master cabin. Found a company in Bellingham that fabricates polyethylene tanks and had a new tank made to dimensions. (old tank was aluminum). I would recommend this option as the material is more durable, and not prone to corrosion or cracking.

                Comment


                  #11
                  Originally posted by ctbarbarian View Post
                  I have a 3818 1988 Bayliner that I want to replace water and septic tank. I would very much like pics and info on how it goes.
                  I have a lot of floor to tear out and tubing to replace too.
                  I am using Melmine shelving for my molds, I am making 2 tanks 14" wide and 10" tall x 72" long.
                  It take 1 15 /4" wide and 2 11 3/4 wide plus the ends, I cut the ends from the 15 3/4 as I bough an 8 ft long board.
                  I use partall past wax and then spray it over with PVA.
                  2 tanks and I do not need to cut out the floor in the port stateroom or the wall an my 3870.
                  I will install a balance tube and vents as well as the fill and I purchased a tank level monitor for one tank, I just need to double the water level.
                  I am using iso resin and will coat the inside with vinyl ester, straight iso resin will work
                  Then it needs to be heated for at-least 8 hours with-out the top on, to remove fumes then laminate the pre made top on, don't remember the temp right now.
                  I will post photo's but the weather here in Florida has me in a holding pattern, it is cold.
                  Pat says: DO-IT-RIGHT THE FIRST TIME!

                  Bayliner 3870 "ALASKA33)
                  Twin 350 GM power
                  Located in Seward, AK
                  Retired marine surveyor

                  Comment


                    #12
                    CT, PM sent.
                    P/C Pete
                    Edmonds Yacht Club (Commodore 1993)
                    1988 3818 "GLAUBEN
                    Hino EH700 175 Onan MDKD Genset
                    1980 Encounter Sunbridge "Misty Blue" (Sold)
                    MMSI 367770440
                    1972 Chevrolet Nova Frame off Resto-mod in the garage
                    Boating on the Salish Sea since 1948

                    Comment


                      #13
                      I conducted more research on what to use on the inside of the water tank.
                      ISO gel coat is what the large professional companies use, so I will also use ISO gel coat in and out outside does not need to be thick, but with wax it will cure the gel coat.
                      Pat says: DO-IT-RIGHT THE FIRST TIME!

                      Bayliner 3870 "ALASKA33)
                      Twin 350 GM power
                      Located in Seward, AK
                      Retired marine surveyor

                      Comment

                      Working...
                      X