head upgrade, help needed

Discussion in 'General Discussion' started by Shay, Dec 8, 2019.

  1. Shay

    Shay Member

    42
    Oct 2, 2018
    Marina Shores at Dune Harbor, Lake Michigan
    1986 Sea Ray Weekender 300
    twin 350 CID 260hp Inboards
    I am looking to upgrade my sanitation system on my 30ft Sea Ray. I currently have a portable toilet in the head. There is about a 5 gallon holding tank on the bottom of the portable unit. The tank has a suction line that goes to a macerator. The macerator has a y valve that goes overboard or to a pumpout fitting on the deck. My intention is to add a toilet that uses the current plumbing and macerator only eliminate the overboard fitting and put a tank in the place of that on the y valve. The macerator is in a cabinet under the sink next to the toilet location. I would need a left side outlet toilet as the macerator is to the left of the toilet and a bottom drain toilet would not work. I don't know a lot about the marine systems but from researching I think this would work. I just need a shopping list. What would you recommend to accomplish this upgrade? I think all I need is the right toilet and a holding tank and some pipe and misc. parts and pieces. I just do not know how to integrate the current macerator into the flushing of the new toilet.

    Thanks for any help or direction!
     
  2. sbw1

    sbw1 Well-Known Member

    Oct 10, 2006
    West Michigan
    This is listed in my signature
    This is listed in my signature
    IMG_4230.JPG FullSizeRender.jpg We used to own a brand new 300 Weekender so I'm familiar with what you have. Don't be too committed to a design tied to the macerator location. You will end up with plumbing hoses that take up space in locations that may not be ideal. This is a pic of our boat which has a similar floor plan to yours. Yours has the galley/head on the right and ours is on the left side of the salon, but the important idea is the use of the space. You don't really want the macerator in the salon area. On our boat it is in the ER at the stern. Do you really need it since you can't legally use it? If so, think about moving it to the ER and use that cabinet space in the head for something else. What you need is a straight, short run from your head to the holding tank and the mechanical stuff that makes the head work. Consider buying a compact VacuFlush system and install it in the ER if you can find one that fits the space you have there. The enclosed pic shows a VF head tank, pump and related mechanical support to make it work. The sanitation hose is Marked In RED and leads from the black water tank to the toilet with a left side discharge and which is located just 12" away on the other side of the ER wall. It's a very short run with no turns to promote clogs. Out of view is another hose that runs along the side of the hull from the holding tank to a macerator at the very back left corner of the transom wall. It discharges via a through hull on the bottom of the hull. This is one of the cleanest installations I have seen in many years of boating. If it works space wise on your boat, you will like its functionality.
     
    Shay likes this.
  3. Shay

    Shay Member

    42
    Oct 2, 2018
    Marina Shores at Dune Harbor, Lake Michigan
    1986 Sea Ray Weekender 300
    twin 350 CID 260hp Inboards
    Great looking engine room! the reason i was thinking about keeping the macerator was i saw that some units use that as the flushing mechanism for the head. I have enough room in the engine room for a holding tank and thats where I was planning on putting it, and I could put the macerator back there too.
     

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