I had an older Catalina
with that motor
, there wasn't as muck water coming out of the exhaust on that one as some others I've had but this doesn't sound right.
only lets water out when the thermostat opens but on mine there was a bypass to let the excess water flow into the cooling elbow
of the exhaust which is needed to keep the exhaust components cool enough. If the po routed this to a dripless seal cooling
hose it wouldn't be the best way to approach this.
Creating one problem while solving another.Best to take pictures of the parts
in question and trace the cooling system hoses.
I did know the setup pretty well on that one since I replaced the packing gland
and rebuilt the motor and exhaust system while at it. One nice thing about that motor, once the manifolds and transmission
are separated from it two reasonably healthy guys can lift
the motor out by hand.