1988 Tournament With 150HP Yamaha, Prop size?

[whaler1777]

Hello everyone I am brand new here but not a new grady owner, I have had a few over the years. I just purchased an 88 Tournament with a 150 yamaha, the prop thats on it now is a 13-3/4X19 and I am only turning 4600RPM at WOT, Any one know the proper size that this boat calls for??? Much appreciated, John

 

[whaler1777]

Nobody?

 

[Jerseyboy1946]

Try this site

Go to Mercury Marine - propeller section. They have a drop down menu on what prop for your boat. Give you a good idea of the sizes and pitch based on boat, motor and loads.