If this is something you cobbled together yourself, that's quite possible. If it's a production boat that didn't overheat from day one, something has happened over the years or all of a sudden that causes it to overheat. Find what it is, correct it, and the froblem is fixed
Yes Sir, will get right on it...
Not so easy. The engine
has ran hot if pushed, from the day I bought the boat 14 years ago and same with the previous owner. At normal cruising power (2100 rpm) there is no problem, even at 'high" cruise
it stays steady up to about 2600 rpm
, anything over that and the temp will slowly build up to the red. Quite a few 4-108s have had the same problem and some have not:
My '85 4-108 never overheated, it was pushing a 44 ft boat too.
Again the question here is them Laser Guns
, and where to point them to get an accurate reading? One would think the surface on the outside of the engine, exposed to cooler air, would be cooler than the actual coolant
inside the engine and there would be a measurable difference?