Which pitch prop to buy?

[Marion Moore]

I need to upgrade to a SS prop because of my boat use in the salt marsh. My 2002 4 stroke Nissan 30 HP’s WOT reading is around 5100 RPM fully loaded. The users manual calls for 5250 – 6250 RPM. The stock Aluminum prop is a 9.9x12. It is my understanding that I need a lesser pitch to speed the engine up a little right? <br /><br />Would a 10.125x11 SS increase the RPM's enough or should I get the 10 pitch?

 

[Silvertip]

Re: Which pitch prop to buy?

Here ya go: Run the numbers based on what you currently have. Use 12% slip as a rough number.<br /> http://www.rbbi.com/folders/prop/propcalc.htm