ya I know its a tough one. water pressure is stable at 3000 RPM at about 12 psi but the temp builds to close to 210. Water pressure drops at higher RPMs but then the temp falls back to <180 and at some RPMs as low as 150.
Well I got it on the water today. Water temp as 47 F. Ran the boat(after letting it warm up) at idle for a quarter mile and the temp topped out at about 150 ish then ran it up to 2000 RPM for 10 minutes or so and the temp topped out about 180 ish then ran it at 3000 rpm and them temp climbed...
one thing I have not mentioned. I have a water pressure gauge and it shows a constant 12 psi at 3000 rpm but at 4000 rpm the pressure varies wildly from as little as 5 psi to about 10 psi but it runs at about 145 degrees at 4000 rpm.
I replaced the poppet valve and all its various parts. I have not had time yet to test it but the old poppet valve looked practically pristine. I dont think that is the problem but we will see when I get out to test it. Hopefully there will be a day before ice up. LOL
