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cat vs. dd vs. man engines for 45' - 55' sportfisherman

Discussion in 'Engines' started by rusty j, Jun 16, 2025 at 1:41 PM.

  1. rusty j

    rusty j New Member

    Joined:
    Dec 10, 2020
    Messages:
    1
    Location:
    san diego, ca
    I'm in the market for a 45' to 55' sport fisher and wondering about the pluses and minuses for these motors.
  2. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,805
    Location:
    Satsuma, FL
    Engine model numbers would help.
    All have good engines, all have bad engines?
    Some even have great engines but to answer your question, need engine model numbers to discus them better.

    Then you need a good/great shop to support you.
  3. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,629
    Location:
    Fort Lauderdale
    How long is a piece of string? Without knowing year/model/hours and the boat itself, it's an impossible question to answer. Overall I'd choose common rail Man's, cat's and DD would be a very distant third.