Hi friends. I would like a little help on getting my
cooling in order. The
engine has been over
heating and I have changed the impeller within the last few months (I really cannot tell how much wear is on the brass pressure hill or whatever the hell you call it). The strainer was very high and seemed to be airating, so I lowered it and put teflon on the threads. I have blown out or cleaned all the hoses. There is free flow when I open the 3/4"
raw water seacock all the way to the
pump. Last week we overheated. I wonder if the
raw water hose/strainer is routed right. I have the hose coming off the cock under the
engine, then it travels
oil pan level to the strainer which sits above the
transmission....then to the
water pump">raw
water pump. My questions are: what is the preferred routing height (above or below
water pump impeller and level?) and since this engine is about 10 years old (2000hrs) with mostly fresh water but some heavy
salt use each year for a couple of
offshore races, could the thing be worn out? On a good day there is quite a bit of spray coming out of the
exhaust but lately it seems to need to "recharge" even at higher RPMs. OK, to wrap up, is it poor routing or should I invest in a new
pump?
Coz