"Franz Eckert" wrote in
. dk:

If it get's hot, it must be possible to simply let the fuel go for a
spin in the boat through some copper tube, and let it cool of there
before reentering the fuel line.



You could simply feed the return oil through a heat exchanger. Any old
Mercedes diesel junk car has a great oil heat exchanger beside the radiator
that would work great. (I have a '73 220D and '83 300TD. Both have them.)
If that works for you, just mount them where the bilge blowers are sucking
air through them and you're in business. The oil coolers on the Mercedes
diesels have oil pressure on them far exceeding any fuel pressure in the
primary loop...(c;

--
Larry