I've just read an article on another subject talking about over sized props.
One of the responses stated that an over size prop could cause over heating
This has got me thinking. I've never had these V8's over 3000RPM, and as I've stated that once I pour on the power the temp starts going up.
At a boat show
I was talking to a Rep from a prop co.
He said my 255HP Mercruisers should be pulling 4200RPM with a 1.9:1 gearbox
with a 18" x 18" 3B super cup and it should pull 32 knots.
Now I have no idea what the gearbox
ratio is other to say that it is original so it is as it came out of the factory and I've try to see what size the props are but I can't see any markings.
I'm lead to believe these are originals too.
I've had plenty of boats in the past , but this is the first cruiser with inboards , so therefore I don't have anything to compare it with.
Thanks for you thoughts.