I'd agree on the FW side. On the salt water side, if the hose is automotive
and has a metal coil inside, I'd bet it would rust away in weeks, because it
was designed to be run with fresh water and antifreeze with corrosion
inhibitors.

--


Keith
__
Don't go around saying the world owes you a living. The world owes you
nothing. It was here first. -Mark Twain
"Bowgus" wrote in message
...
I'll bite ... my mercruiser thermostat is 140 F ... lower than an
automotive
thermostat ... the manifolds/risers/exhaust are water cooled ... much
cooler
than an auto exhaust ... water pressures are no greater than in an auto
engine ... I would use automotive cooling lines on the fresh water side.
Salt water side ... no comment.

"Edward Greeley" wrote in message
...
Gentlemen (and ladies if you have any comments):

Does anyone know of any "real world" reasons why automotive-type,
corrugated flexible hoses should not be used to replace unavailable or
ridiculously expensive OEM molded hoses in marine engine cooling
applications, i.e.:

A. On the fresh water (antifreeze) side of a heat exchanger cooled
engine?
B. On the sea water (salt water) side of the same cooling system?

Please, folks, I'm asking for VALID reasons why the automotive hoses
should NOT be used, not non-specific comments like: "Well, the XYZ
company must have had SOME reason for not using those hoses."

Your comments, advice, or experience with this will be appreciated!

Thank you,
Ed Greeley