Originally Posted by Richard B
Don't worry about water siphoning in thru' a 1" tube, just worry about the wave coming over the top! You can control the stern wave with the throttle, anyway.
Sure - I realise you can control the sternwave with the throttle under most conditions.... and it's not really the quantity of water I'm concerned with - it's the back pressure on the pump - the issue is that if the exit is (say 2 inches) below the level of the transom - you now have the pressure of the stern wave coming back up the pipe and acting against the pump (which may be pumping at the time...) BEFORE the water is coming over the top...
I wondered if this
(a) would lead to situations when you effectively have no pumping action or
(b) might either damage the pump or blow a fuse from excess load....