1989 26’ Predator

Discussion in 'General Conversation' started by Jonnydime, Sep 7, 2021.

  1. Jonnydime

    Jonnydime Active Member

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    F25C855A-2DC6-4157-9896-0012AA507A18.jpeg CC5D21AC-923E-4CE0-9D16-FA00D4ED1B7F.png 3F261AC4-3DDE-4C9C-882F-109D1168A191.jpeg I recently purchased a 1989 26’ Predator that was repowered with a 383 with vortec heads. It currently has the original 16x17LH prop that may or may not be cupped. Right now I’m topping out at 35mph at 4000rpm (how accurate I don’t know I will verify at a later date). I’m looking to pick up some top end. Any suggestions.
     
    Last edited: Sep 7, 2021
  2. deputyrpa

    deputyrpa Well-Known Member Supporting Captain

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    35mph is fast for that boat. I've danced with my keel of my 20' once at a higher speed. I did not lead.
     
  3. seatux

    seatux Well-Known Member

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    Yea, there is a max hull speed for Every boat. Go beyond that at your own risk.
     
  4. TK246WA

    TK246WA Well-Known Member

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    the 26 predators are slick, I might have to keep an eye out for them as they pop up for sale.
    I agree that 35mph is fast I’d be happy with that number.
     
  5. Jonnydime

    Jonnydime Active Member

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    I would like to be able to cruise at 35 maybe shoot up the low 40’s (very low lol). I believe I have the power.
     
  6. Mistress

    Mistress Well-Known Member Staff Member Supporting Captain

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    I'd think to get more top speed you'll need to wind up a little tighter than 4krpm. What's the engine redline?

    But yeh, these boat were never designed to be speed demons.
     
  7. Jonnydime

    Jonnydime Active Member

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    I'm going to borrow the Autometer tach from my Lincoln to verify rpm's next time I'm out. Right now the with the factory tach it tops out at 4k but when it hits 4k it's like the needle hits a wall.
     
  8. Holty

    Holty Well-Known Member

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    Jonnydime, Many before you have wished their 260 could be faster. These rigs were just not built for speed. At 3100 rpms you should be doing 17 to 18knts. This is your sweet spot. Any higher rpm and your secondaries open up and you are just wasting fuel with little extra speed to show for it. Also, a gas engine is not meant to be pushed to its limit for an extended amount of time. Doing so will surely shorten its life. My two cents

    regards Holty
     
  9. Jonnydime

    Jonnydime Active Member

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    At what my current tach say's is 3100-3200rpm I'm cruising at around 20-22knts. I would just like to bump that up a little. I found a cupped 16x18 prop for sale and may just buy it to see what it does (my current is a cupped 16x17).
     
  10. Mistress

    Mistress Well-Known Member Staff Member Supporting Captain

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    The rule-of-thumb is to be able to hit redline with standard load out. If you can't make it to redline, you're not developing peak horsepower at the same time as inducing additional strain (torque).

    Top speed is obtained with horsepower. Getting there is obtained with torque.

    So yeah, I'd verify rpm. I have a cheap phototach.
     

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