The fresh water side probably doesn't make much difference other than the
reduced flow from the corrigations. On the raw water side it makes a lot of
difference because automobiles don't normaly sink when a rotten hose breaks.
There is a big difference between series 250 water hose and regular
automotive hose. Like almost twice the wall thickness and much more
reinforcing.


"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

"Edward Greeley" wrote..
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

Nope. None at all... well maybe a small one.


Glenn Ashmore wrote:
The fresh water side probably doesn't make much difference other than the
reduced flow from the corrigations. On the raw water side it makes a lot of
difference because automobiles don't normaly sink when a rotten hose breaks.

Trivial detail!

There is a big difference between series 250 water hose and regular
automotive hose. Like almost twice the wall thickness and much more
reinforcing.

I bet boat hoses see a wider variation in temps & pressures, too. It's
quite possible to pay high prices for fancy labelled "marine" equipment
that's really not much better than K-mart brands, but OTOH if you learn
a little bit about what the specs mean, and various service ratings, you
can shop for industrial parts with the highest rating and still save a
little money. IMHO you're also better off, but then I believe that
knowledge is a good thing for it's own sake

Regards
Doug King