Detroit 671

Discussion in 'Diesel Engines' started by johnloucka, Feb 7, 2010.

  1. johnloucka
    Joined: Feb 2010
    Posts: 2
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    Location: New Jersey

    johnloucka New Member

    I am looking at a 1990 38 topaz with twin D671 any input
  2. El Sea
    Joined: Aug 2006
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    Location: St Petersburg, Florida

    El Sea Junior Member

    Great engines!
  3. BTPost
    Joined: Dec 2009
    Posts: 47
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    Location: Excursion Inlet, Alaska

    BTPost Junior Member

    For the Hard of Hearing.... They don't call them "Scream'en Jimmys" for nothing....

    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    6-71 and other engines can eat so much fuel to be worn out.

    As a 1200rpm Gen set 30,000 hours is not uncommon .

    1800rpm . the daily fuel burn will higher and service life lower.

    In a boat that does not attempt to plane , service life is usually extreme.

    The fish killers tweak the units to run 450hp with a couple of turbos , 1000 Hours is considered good longevity.And at 60GPH it will eat almost as much fuel as the gensets in its life

    How the boat is run will determine the life.

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