GL: potential water leakage

[Bill Donovan]

Sue:

Sounds like every other sea water cooling system I have ever seen, as 
long as the water exit is into your exhaust low enough to not be 
siphoned back into the engine.  The vented loop helps, as I understand.

As long as you have a vented loop in any system that goes below your 
waterline and then out, you should be OK.  You said "venturi 
tube."  I guess that means vented loop.

A Venturi tube has a restriction (reduction in radius of the tube) in 
it.  Complicated device, used for technical stuff.  What you want is 
a vented loop.

I am sure one of our technical geniuses will simplify my answer.  If 
you have a reputable boat manufacturer, you probably need not 
worry.  That's the simple answer.  Smacks of a hungry mechanic, too.

Bill


At 05:47 PM 4/19/2009, Coral Hadler wrote:
>Hello Guys,
>
>A mechanic told us the other day that we were incorrectly hosed, and we could
>easily sink.  A scary thought indeed.  But mechanics have been wrong in the
>past and our boat has been plumbed like this since coming from the factory, so
>before we commit to change, we want your opinions.
>
>Raw water comes into the boat as follows:
>     Raw water strainer to engine water pump through engine to after
>cooler to transmission and oil cooler to venturi tube to wet exhaust to
>out.
>
>Is this the correct arrangement or not???
>
>Thanks,
>Sue
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