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    • Cummins Marine Forum Topics
    • Cummins 6BTA 5.9 Gear Case Dowel Pin Issuse

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 3 years ago

      January 4, 2021 at 8:21 pm My 6BTA5.9-M2ā€™s, CPL 1928 in my 1997, 4788 Bayliner. Both engines were manufactured in 1996. Port engine sn:45352537 & has 2215 hrs, Starboard engine sn:45356373 and 2205 hrs. I have read that these engines have an issue with the gear case alignment dowel pin (Cummins 3958017 replaces original pn) moving forward and falling into the gearing causing engine failure. I have also read on this forum that these are and issue on truck engines and N…

      Started by: amx1kjw in: Cummins Marine Engines

      1 Reply
      January 15, 2021 at 7:31 am You are referring to the “Killer Dowel Pin” syndrome issue.. This was never a “factory” marine engine issue .. The issue was only related to engines installed in trucks or similar applications–Why? The much higher heat involved under the hood of a vehicle that would expand the aluminum and in a few cases, allowed the alignment dowel pin to come out.. Don’t loose any sleep on your 6BTA 5.9 M2’s.. You h…

      Last Post by: Tony Athens posted: 3 years ago

    • What is the Maximum Continues EGT Limit

      This topic has 3 replies, has 3 voices, and was last updated byBill Desmarais 4 years ago

      July 14, 2019 at 9:58 am Need some help, I am looking for the Maximum Continues EGT and the Maximum EGT for my 6BTA5.9-M2ā€™s CPL 1928 in my 1997, 4788 Bayliner. Both engines were manufactured in 1996. WOT 2850 Port engine sn:45352537 & has 1950 hrs Starboard engine sn:45356373 & has 2010 hrs Props are 24Ɨ24 Nikishuma

      Started by: amx1kjw in: Cummins Marine Engines

      3 Replies
      July 18, 2019 at 5:40 am Here’s a video of my 6BTA 370 running @ 2600 rpm. EGTs are 750ish. The EGT will hit 800F WOT. The engine is installed in a 25 ft downeast lobster boat. Total weight maybe 8500-9000 lbs. The 370 is not producing much hp to move the boat along @ 23 knots. Not sure of % load. The engine is purposely under propped @ 3250 WOT as not to abuse the ZF63A gear. For what it’s worth, Bill D

      Last Post by: Bill Desmarais posted: 4 years ago

    • Turbo Curves and EGT curves

      This topic has 4 replies, has 3 voices, and was last updated byamx1kjw 4 years ago

      July 5, 2019 at 2:06 pm I have a pair of 6BTA5.9-M2’s CPL 1928 in my 1997, 4788 Bayliner. Both engines were manufactured in 1996. Port engine has 1950 hrs and Starboard engine has 2010 hrs on it. I am looking for a data sheet for this CPL and have had no luck (check Boat Diesel and Cummins Website). I would also like to find data on Turbo and EGT curves. Thanks for the help Kurt Walter amx1kjw@twc.com

      Started by: amx1kjw in: Cummins Marine Engines

      4 Replies
      July 10, 2019 at 11:30 am Thanks Tony. Here is a spread sheet I keep for engine data. I am trying to operate for the best longevity and efficiency. These are the latest numbers as i have not done much cruising since bringing out of winter storage. Thanks port sn:45352537 stud sn:45356373 Props 24×24 Nikishuma

      Last Post by: amx1kjw posted: 4 years ago

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