any idea what prop to put on this 1984 30hp Mariner?

[Skidooosl]

i need a prop for my 1984 30hp 20 inch shaft mariner. it will be going on the back of a 14 foot rowboat.... what the local yamaha dealer recomended a 9 7/8 diamiter and 11 1/4 pitch... does this sound good? it sounds small to me.. but i dont really know... any idea's?

 

[rickdb1boat]

Re: any idea what prop to put on this 1984 30hp Mariner?

Prop selector recommends a 9-3/8 X 12" prop for 13'-16' BOATS - LIGHT LOADS . So he's real close. I assume it's a Johnboat?

 

[Skidooosl]

Re: any idea what prop to put on this 1984 30hp Mariner?

what is prop selector? and it will be on a V hull boat.

 

[dcm3372]

Re: any idea what prop to put on this 1984 30hp Mariner?

Hi,<br /><br />I have a 14 foot v-hull boat with a 30HP 1980 Mariner standard shaft engine.<br /><br />Originally, I had a 9 1/2 x 14 prop on the boat. After that prop got damaged I bought a 9 1/2 x 10 1/2 prop and the difference was amazing! The boat was much faster and responsive with the newer shorter-pitch prop and uses less fuel.<br /><br />So basically, I've found the 10 1/2 inch pitch to be far better for this boat.<br /><br />Usually I have about 3 to 5 people on board.<br /><br />Hope this helps!<br /><br />Dan