Almost ready. Now what size prop ?????

[cootersplace]

Heres the set up, and I need to know what size prop for the best everything. I have a 20' Alumicraft Tunnel Jon boat 8' beam , I am putting a 1993 Mariner 115hp. we put a manual jack plate on to accomadate the tunnel. It had a prop on it that was for a pontoon boat, so what should I go with ??? Thanx everybody . Cooter

 

[rickdb1boat]

Re: Almost ready. Now what size prop ?????

I would start with a 13-1/4 X 17" pitch. That should get you close. Really need a tach. to determine if you are in the correct RPM range. Of course, this is only based on the prop selector. Actual weight of the rig and the load you carry and purpose you use the boat for will make a difference. The tach. will tell the story!