Prop thro transom

Discussion in 'Inboards' started by Canveysteve, Aug 18, 2016.

  1. Canveysteve
    Joined: Jul 2016
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    Canveysteve Junior Member

    Hiya
    Would it be possable to put a prop thro the transom as whanting to in bord with a xld engine was thinking of engine so gearbox faces to the bow the chain drive down to the prop ?
     
  2. gonzo
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    gonzo Senior Member

    It is possible, but you will need to use a propeller designed to worked ventilated (surface piercing) to be efficient. What is an xld engine?
     
  3. Canveysteve
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    Canveysteve Junior Member

    I was toying with the idea of cutting keel / transom and adding a "box so the prop is under tbe boat will do a scetch later think it should work , its a norman 23 mk2 so normaly fitted with z drive or a outbord ( the xld is a 1.8 dies ford found in escort vans , fiestas ect
     
  4. gonzo
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    gonzo Senior Member

    The complication and high cost of marinizing an automotive engine is something you should consider. Unless it was a common engine used on boats, you will have to fabricate and machine many parts. Also, you will have to adapt marine type spark-protected electrics. Further, the fuel system will have to be modified to comply with regulations or a marine system installed.
     
  5. Canveysteve
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    Canveysteve Junior Member

    Lancing do the marinising for them but am concidering going keel cooling to keep costs down ( will try n make my own ) will use standard header tank and poss dry exhaust
     
  6. gonzo
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    gonzo Senior Member

    Planing hulls are not ideal for keel cooling. However, you could put one that is streamlined along the keel. I think that will not be cheaper than the standard heat exchanger though.
     
  7. Canveysteve
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    Canveysteve Junior Member

    Shurly it be cheaper than all the raw water pumps ect ? Plus side tbe engine shoud last longer , cant se to find anywhere selling keel coolers ??
    I remember my mates boat jad just a cooling pipe was1.3/4 dia that was it ! Never had a prob other than a lil leak

    Du think the box idea would be better thsn thro the transom
     
  8. gonzo
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    gonzo Senior Member

    On a slow boat, dragging a pipe is not a major problem. Planing boats will have two main problems: firstly, it may affect steering and trim plus create a lot of drag. Secondly, when the boat lifts, some of the pipe will be out of the water and the engine may overheat.
     
  9. Canveysteve
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    Canveysteve Junior Member

    Mine acording to the specs is a full displacment so should be ok cooling i coud put at the rear i gess?
     
  10. gonzo
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    gonzo Senior Member


  11. Canveysteve
    Joined: Jul 2016
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    Canveysteve Junior Member

    Cool a canal speed boat !!
     
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