I'm running a longtail powered by a honda gx390 13 hp, I've decided after replacing the governor (previously over reved and just finished fixing the damage) that I will keep it goverened. With this setup whats the best prop to run/what is everyone else running? What is the biggest prop I can turn with that motor governed at around 3600 rpms but maxing out its power? Also I'm considering switching to a 16 hp brigs and would have the same question with that setup. Don't want to do anything to the engine to mess up the reliability as thats more important to me than speed but I do want to make sure I'm getting the most out of what I do have. Thanks

your new - so here's some grace:

First - be ready for everyone to tell you to use the search function

Second - there is a Prop/Lower unit thread in this forum

Third - I'll be nice - go look at BackWaterInc.com they have the best props in my opinion. Tell him what you want and they should sort you out.

Thanks I definately have some to learn. I have tried the search function before with success for other questions I've had but couldnt get exactly what I was looking for with this question (maybe I'm just missing something). I'll have to get in touch with them as I was looking at their props earlier and they seem to rate them on hp instead of pitch which I thought was interesting.

good luck !

Hill Marine knows there shit as well.There always happy to help.

i just had the same question about 2 weeks ago. i had a 6 inch prop on my boat told them i was running a 25hp kohler they sent me a 9 inch prop put it on and had a huge change on speed and gettin thru some nasty thick mud. 'hill marine' is the place i called