Hi Chuck,
I have seen this βteeβ arrangement on many boats, but I was advised that it is
an easy way to flood the engine with water. If your water pump does not stop
the water flow (and it does not have to), you can easily overflow the muffler
and the mixing elbow and fill the cylinder(s) with water through the exhaust
valves.
It does not have to happen (especially, if you are quick with closing the water
tap after you stop the engine), but it can happen.
If you want to be really paranoid about it, another issue is that the tee is
either plastic (PVC) or brass; neither is recommended for under water fittings
(PVC β not strong enough; brass β corrosion).
just a though
Marek (in Ottawa)
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