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Correct props

Old 04-12-2020, 09:52 AM
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I have a 1998 2870 pursuit center console running 2006 mercury 250 verados right now the props are 15.5x15 but they cavatat on take off , been told to go to enercia 15.5x17 props any thoughts or recommendations or anyone have a 2870 pursuit with 250s what you running.Need to get the right props on this vessel
Thank you for the help
Old 04-12-2020, 10:47 AM
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What’s the max rpm you can spin them to right now?
Old 04-12-2020, 11:00 AM
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I belive 6200-6500
Old 04-12-2020, 11:01 AM
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I can just reach the max rpms but it cavatates way to much on take off and at low speed
Old 04-12-2020, 11:03 AM
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Isn't that a bit high on the RPM side ?
Old 04-12-2020, 11:08 AM
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Swap to Rev 4 props @ same pitch and diameter. Should help
Old 04-12-2020, 11:10 AM
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I run the eco enertia and they are good at limiting cavitation. Are the engines new to you? Did you get the mounting height right? Do the current props have PVS vent holes unplugged? Are they in good shape or dinged up? A 15 pitch seems small for that boat.
Old 04-12-2020, 08:44 PM
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Good info form others but my first move would be to grab some 17p 4 blades which would be equivalent to 19p 3 blades but get you better cruising speed.
buy aluminum to confirm and have extras but if I was betting man that’s what I’d put on your boat.
Old 04-13-2020, 04:08 PM
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Are you in Alum or Stainless now? You can go up in pitch for sure. Many variables, Alum and Stainless perform a bit different. A 4 blade will give you more handling at that higher speed you are looking for. Sounds like you need more of a prop either way. Should also help with cavitiation. May want to purchase from a company that offers free exchanges. No surprises, and you end up with what works best for you. I'd compare a few. PowerTech makes some good props for the price. Call me if you want to talk details. Good luck
Old 04-13-2020, 08:48 PM
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The boat is newer to me yes. No PVS in the props I have now. Stainless props . I was looking at the eco enertia props
Old 04-13-2020, 08:51 PM
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I have stainless right now, Im just trying to get rid of the cavitation at take off when boat gets up on plain it handles great and runs good its just take off and slow speed is when it grabs to much air under the props
Old 04-13-2020, 08:53 PM
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Thanks folks for the info Im going to look into the stainless enertia props probably 17 pitch try to get a loner set see what happens
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