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  1. #1
    Member
    Join Date
    Sep 2017
    Location
    Fond du Lac, Wisconsin
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    346

    18 footer with a 150HPDI?

    Anyone running this on an 18 footer? I just put this on my boat and am wondering what hole you have it mounted in? The reason I ask is it gets squirlly at 55ish and I'm not sold on it being chine walk but more so prop torque. It's mounted on the 3rd hole down.
    Triton 180DC---150hp Yamaha Vmax HPDI---Bobs 6" Hydro Plate---24 Tempest Plus---Ultrex---Lowrance Carbons

  2. Member
    Join Date
    Apr 2020
    Location
    Ontario
    Posts
    599
    #2
    What is the prop to pad measurement where it sits now?

  3. Member
    Join Date
    Jul 2016
    Location
    Dubuque ia
    Posts
    2,296
    #3
    Ptp would help to know quite a bit. Also your rpms at wot.

  4. Member
    Join Date
    Sep 2017
    Location
    Fond du Lac, Wisconsin
    Posts
    346
    #4
    I'll get the PTP measurement over the weekend. Boat is now in storage for the winter. As for WOT RPM, 5,900 at 60mph with a 23 Tempest.
    Triton 180DC---150hp Yamaha Vmax HPDI---Bobs 6" Hydro Plate---24 Tempest Plus---Ultrex---Lowrance Carbons

  5. Member
    Join Date
    Sep 2017
    Location
    Fond du Lac, Wisconsin
    Posts
    346
    #5
    Quote Originally Posted by jdwo2212 View Post
    Ptp would help to know quite a bit. Also your rpms at wot.
    PTP is 6" without a plate. I have a 23p tempest hitting 60mph at 5,900rpm.
    Triton 180DC---150hp Yamaha Vmax HPDI---Bobs 6" Hydro Plate---24 Tempest Plus---Ultrex---Lowrance Carbons

  6. Member
    Join Date
    Jan 2005
    Location
    Red Oak Va.
    Posts
    10,597
    #6
    If it's mounted in the third hole from the top with out a jack plate raise it up one hole which should put you at 4.25" under pad with no plate and run it. It's chine walk from the motor being too low prop to pad making it feel loose.