Perkins T6.354M heater hose attachment???
My hot water is at best Luke warm. The return hose is luke warm and the hose out gets pretty hot but slowly. The hose out is just in front of the thermostat and the return goes back in just after the thermostat in the cross pipe to the heat exchanger. Disconnected there is a good flow both out the hose and the engine connection. I believe the out/ in are too close. Where are yours connected? Thermostat is good, Engine temp comes right up to 170 and will run up to 185 at wot. Old sailor, new here and to trawlers 1984 Mainship 34 flybridge.