water cooling pipe gm10?

If you look here the last photo shows the inlet of the water pump. The page actually describes the fitting of a water flow alarm circuit, and the sizes of the pipes used are mentioned. The inlet strainer and pipework are all 3/4" BSP, but the water pump itself has a (roughly) 1/2" id inlet.
 
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Hi can anyone tell me the bore size of cooling water pipe i need for the yanmar gm10 ? please....
cheers...

[/ QUOTE ] It so happens that I replaced mine yesterday! 1/2 in pipe did the job for me.
 
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Is there a particular sort of pipe you should use? Presumably it is reinforced to stop the pipe collapsing under pressure?

[/ QUOTE ] Probably there is. I just used the reinforced PVC pipe you can buy in the chandlers. It's a bit prone to kinking in tight turns but I don't think collapsing under the strain of suction from the wee impeller is much of an issue.
 
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