First of, thank you for any input in advance. I'm first time boat owner. I picked up a 94 sea ray with 5.0 alpha.
When cruising 1/2 throttle, 20 mph or so (sorry forgot what the rpm was) it runs great. Open just over 3/4 or full throttle or 25 or so mph, it overheats in 10 mins.
It had not run...