Prop thro transom

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 ?

 

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?

 

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

 

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.

 

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

 

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.

 

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

 

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.

 

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

 

If this is the boat you are referring to, it planes: http://www.normanboats.co.uk/brief_history_of_norman_cruisers.htm

 

Cool a canal speed boat !!