What Prop on my 1979 18'3" with a DF175

[McGillicuddy]

Originally Posted by SportPort

Ok, I'm befuddled. I wanted a 15 x 17 stainless 3 blade. My prop guy talked me into a 15 x 19. It will only run 5100 rpms at WOT. Is anybody running my boat/motor combo? What pitch works? Do I really need a 15" or 16" pitch?

SportPort, no offense but I don't think you'll find anyone running a 480lb motor on a SeaCraft 18. Not sure of the year of your Suzuki but thats the approximate weight of recent DF 175s

A couple of questions:
Is your boat a SeaCraft 18?

What prop (specifically) are you running?

I would recommend going down in pitch at your prop guys expense and make sure the specific model of prop is designed for your set-up.

Clearly you need to drop in pitch, but my guess is that you also need a stern lifting prop to manage the weight of that motor. That means big blades with a low to moderate rake, little cupping and maybe even consider a 4 blade prop.

Good luck