Prop / RPM Question

[jetjoe99]

Bought a new boat, came with a slow prop and low top end RPM prop. Getting 60-63 at 5100 RPM, that is plenty fast for me. I can upgrade and do a 23 pitch and get 67-68mph at 6000 RPM. BUT I kinda like not running the boat HOT when I do open her up. Is there an issue with my current prop and RPM levels? Will the top end RPM range hurt my motor at all? I feel as if it will NOT, but want to ask as I am hearing from both sides.... Thanks.

[Ntrain23]

In my experience I'm Fairly sure you want to be propped to the correct WOT RPM range for your motor, theoretically that actually puts less stress on the motor, doesn't bog it down and allows it run in the right range when you do open it up. Got almost 900hrs on my motor and I get it up close to 6k rpm basically every trip out

[mactlman]

In my experience I'm Fairly sure you want to be propped to the correct WOT RPM range for your motor, theoretically that actually puts less stress on the motor, doesn't bog it down and allows it run in the right range when you do open it up. Got almost 900hrs on my motor and I get it up close to 6k rpm basically every trip out

Better to prop it correctly and keep your foot out of it in my opinion.

[yandeltx]

Well if you are correct with assuming the 23 pitch will get you to 68mph then you will still be around your current mph at your current rpm’s. The 23 might be the best of both worlds. However you may lose a little on the take off. Sounds like either one will suit your needs. The main thing is to get out on the water and enjoy your new rig!!

After re-reading your post I have a question. Can you only spin your current prop to 5100rpms? What prop are you currently running?

[ThomasD]

Keep it the way it is and we’ll be waiting for your next post asking why your motor is making oil

[jetjoe99]

Yes, I can only spin it to 5100 RPM

[1ranger487vs]

What kind of prop do you have