Cummins Marine Diesel Repower Specialists › Forums › All Other Marine Diesels › Detroit 4-53 Max HP (Dyer 29)

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  • September 13, 2021 at 10:23 am #120678

    Patrick Presti
    Participant
    Vessel Name: Out Saleing
    Engines: Cummins 6BTA 270
    Location: Islip, NY
    Country: United States

    Hi Guys,

    I just recently purchased a Detroit Diesel 4-53 Natural for a Dyer 29. Does anyone know how much horsepower I can get out of it if I turbo it?

    Thanks,

    Pat

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  • September 14, 2021 at 1:08 pm #120733

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    I have “seen” 4-53’s with turbos but I doubt Detroit did it.. Probably aftermarket like J&T or ??

    September 14, 2021 at 6:37 am #120714

    Patrick Presti
    Participant
    Vessel Name: Out Saleing
    Engines: Cummins 6BTA 270
    Location: Islip, NY
    Country: United States

    Yeah I understand all of that Tony. I appreciate your reply. I plan on rebuilding the entire engine anyway so I’ll have the whole engine apart. Did Detroit make a 4-53T Marine setup? Is a turbo available for the jacket water cooled exhaust manifold?

    Thanks,

    Pat

    September 13, 2021 at 5:44 pm #120696

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    A turbo in itself WILL NOT increase the HP–You’ll need new injectors and timing changes, possibly an aftercooler, etc.. The right “hot-rodding” could probably get you 200+ HP at 2800+ RPM.. How long the engine would stay in one piece is another question.

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