Marinize a Subaru?

Discussion in 'DIY Marinizing' started by curtis73, Sep 1, 2006.

  1. curtis73
    Joined: Mar 2002
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    curtis73 Junior Member

    Ok, thanks.
     
  2. skoc
    Joined: May 2005
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    Location: Croatia

    skoc New Member

    marinizing a subaru

    Please contact me by e-mail at skoc@net.hr. I somehow got .doc verison of the mentioned article.

    Skoc
     
  3. messabout
    Joined: Jan 2006
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    messabout Senior Member

    Not only did wooden Boat do extensive coverage of the Subaru application, they also sponsored a design competition for a Small cruiser to accept the Sube. In addition they furnished the names of manufacturers who build the marinizing parts for that engine.
    I believe that Subaru themselves make a marine version of the opposed piston design.
     
  4. Inboard
    Joined: May 2012
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    Inboard Junior Member

    Inboard

    Just found your forum I am fitting a eg33 six cylinder subaru into a barrelback
    19 I am building and plan to run dry manifolds up to the risers and lag the dry
    section. I have customized the headers to be further away from the hull as well
    as ceramic coated to help lagging
    I have attached some pics of the jigs i made for the risers and of the motor. Any feedback welcome
     

    Attached Files:

  5. thudpucker
    Joined: Jul 2007
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    thudpucker Senior Member

    I bought a Subaru Wagon in 77. Brand new, it was trouble from the start.
    They didn't work out well in Aircraft either. Nice looking and light weight, but had bearing and seal failures under loads.

    I've always liked the idea of a flat engine with the Exhaust up on top, Fuel Injected, so there isn't a hi profile.
    Maybe Subaru or an old Corvair, VW, Porsche etc is the right thing?
     
  6. Inboard
    Joined: May 2012
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    Inboard Junior Member

    I am hoping that the problems you experienced have been resolved on the new
    subaru models.

    I am really trying to get a boxer motor to work so will keep you posted
     
  7. originalvision
    Joined: May 2012
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    originalvision New Member

    Hey Inboard, nice build so far! But can you please tell me what you mean by "lag"?
     
  8. Inboard
    Joined: May 2012
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    Inboard Junior Member

    Inboard

    I am not sure of the American term for this but basically i am wrapping the
    headers and pipe below the risers with an asbestos tape and then covering
    that with a heat resistant silicone tape to prevent to much heat escaping and burning the hull. This in conjunction with a few heat deflectors should do the trick.
     
  9. thudpucker
    Joined: Jul 2007
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    thudpucker Senior Member

    How about an Asbestes Coated Heat shield under neath the motor....and a Fan to blow air down at the hull neath the engine and Heat shield.

    When I took my old Chris Craft apart I discovered the constant heat from the engines had cooked the wood to pith.
    There was 4" or so clearance from the Pan to the wood.
    I'd bet that wouldn't happen if you kept it cool down there.
     
  10. Wavewacker
    Joined: Aug 2010
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    Wavewacker Senior Member

    I have an 04 Subby engine out of a Forrester and it needs the heads milled as it overheated but didn't hurt anything, just leaked. I have wondered about this conversion, any ideas what it costs to convert to marine use? You'll want a closed cooling system.....
     
  11. thudpucker
    Joined: Jul 2007
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    thudpucker Senior Member

    I had a dry exhaust in a fishing boat. My wife loved cuddling up to that pipe in the cooler weather. We dried wet clothes on it too.
    Nothing wrong with a dry exhaust if you have adequate heat shields.
     
  12. Petros
    Joined: Oct 2007
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    Petros Senior Member

    The early all alumninum Subarus were not very durable nor reliable, the newer designs seem to be a lot better, but they do have problems with the head gaskets. Seems to me you would also want to use a heat exchanger for cooling the engine since the subi engines have a reputation for head gasket failures from corrosion with the coolant. Use Subaru coolant with a closed cooling system and heat exchanger, should solve that problem. I would think you would also want at least 8 inch clearance from exhaust pipe to wood, personally I would use heat shields to separate exhaust manifold heat from all boat hull surfaces. Good luck.
     
  13. Frosty

    Frosty Previous Member


    It looks like your exhaust go 90 degrees into the horizontal outlet that appears to be the same size.

    Please tell me im wrong.

    Where is the injection.
     
  14. whitepointer23

    whitepointer23 Previous Member

    1 of the new subaru diesel boxers would be nice in a boat
     

  15. Inboard
    Joined: May 2012
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    Location: Johannesburg

    Inboard Junior Member

    No not quiet 90 we realized our mistake before the s/steel fabrication. I was going to fit the water injection at the top of the riser, any thoughts?
     
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