1996 Cat 3176TA engines ?? Any thoughts??

Discussion in 'Diesel Engines/Drives/Transmissions/Props' started by Capt Sandbar, Nov 8, 2018.

  1. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    We are looking at a 500 Sundancer with 3176TA engines - I have heard some pros and cons- thoughts.....
     
  2. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    By the way-it’s a 96
     
  3. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    This might be tough. Relatively few boats were fitted with 76's.
     
  4. hakunamatata

    hakunamatata Member SILVER Sponsor

    194
    Aug 18, 2015
    Southport Marina - Kenosha WI - Lake Michigan
    410 Sundancer
    Caterpillar 3126
    I would PM Frank Webster, or wait for him to chime in as he is extremely knowledgeable all things CAT.
     
  5. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    Mechanically, the 3176 is a good engine, but the 500DA is an old boat design and is very heavy. I suspect that she is going to be sluggish and slow so I would get a sea trial before you spend any money on surveys.
     
  6. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    Hey Frank -thanks for the input- you seem to be the resident expert.
    Any idea what speeds this age 500 will obtain - and are you telling me the fuel mileage will be be worse than other similar
    size boats ?

    This one seems very well maintained and has about 800 hrs on the engines. Are these to small for this heavy of a boat?

    And a million questions will follow - haha

    Thanks Steve
     
  7. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    I'd be surprised if she's sluggish. 500DA's fitted with less, specifically the 2-stroke DD 550 HP 6V92-TA's perform fine.

    I've logged many hours on a 500DA with the DDEC versions of the TA. They're not rated for much more HP than a 3176 (about halfway between the 3176 and the more common 3196). I never had complaints, aside from passengers if I engaged gears without being in low idle!

    We pushed her more than we probably should have, but cruising in mid/high 20's was easy.

    Like most Sea Rays, The 500DA hull is built more for interior space and efficiency than it is for wave smashing.
     
  8. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    I’m probably more interested in reliability and fuel efficiency than speed - makes me feel better that Frank said they are good motors
     
  9. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    Power for the 500DA included 6V92-TA's, 6V92-DDEC's, 8V92-TA's, 3176's and 3196's.

    Of that list, I'd choose 3196's first, then 3176's. If I had a "rebuild for free" coupon, I'd choose DDEC's.
     
  10. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars


    Suggest you address the rest of your questions to RollerCoaster. He seems to know more about this than I do.
     
    HUMPH likes this.
  11. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    I can only offer perspective/comparisons. I'm very familiar with 500DA's in general powered by various engines, but that doesn't include the 3176. I don't think I've even been aboard a vessel equipped with them.
     
  12. bahamabreisus

    bahamabreisus Well-Known Member

    Oct 25, 2007
    Hampstead NC
    500 dancer, previous 420,390,300 dancers
    detriot 8v92
    We have the 8V92s, 735 HP non DDECs. Cruise speed is mid 20s at 1700-1800. I have heard stay away from DDECs, to much computer to make to much HP. We have well over 2500 hours and no major issues. WE have a friend with a 480 Sedan with 3196s, great engines, just make sure aftercoolers are gen 3 and have been checked.
     
  13. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    Thanks for the input- Frank, for sure we will take a ride - am I correct to assume that the 3176 are a lower HP version of the 3196’s ?
     
  14. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    So Frank, you have the same year motors - am I to assume that your 3116’s are the same series as the 3176’s ?

    And Roller Coaster , I certainly appreciate your input and opinions- as I purchase my first diesel boat, any advice is great!!
     
  15. techmitch

    techmitch Well-Known Member SILVER Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
  16. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    Well, price, availablity and my wife liked the SunDancer - happy wife- happy life

    And we seem to have found a very nice 500 at a good price
     
  17. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    Sort of... It’s less displacement too though. 10.3 liters compared to 12 liters for the 3196.
     
  18. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    Cat integrated displacement into what seems like random model numbers back then for the 31XX Series:

    The 3116 has 1.1 liters of displacement per hole and 6 cylinders, to make a 6.6L engine.

    The 3126 has 1.2 liters of displacement per hole and 6 cylinders, to make a 7.2L engine.

    The 3176 has 1.7 liters of displacement per hole and 6 cylinders, to make a 10.3L engine.

    The 3196 has 1.9 liters of displacement per hole and 6 cylinders, to make a 12L engine (yeah, the math doesn't quite work out there: the 3196 is pretty-much exactly 12L, but "3206" was a designation for another series)
     
  19. Capt Sandbar

    Capt Sandbar Member

    30
    Sep 10, 2018
    Prescott, Wisc
    1993 Formula 31PC - looking for a 48 MY
    7.4 Merc -Bravo II
    So what does the “ TA “ , mean ?
    As in 3176TA
     
  20. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    Turbo-charged, after-cooled.
     

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