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    • Cummins Marine Forum Topics
    • Happy Aftercoolers

      This topic has 1 reply, has 2 voices, and was last updated byRob Schepis 1 year ago

      January 26, 2023 at 5:46 pm I just serviced my 6BTA 330 aftercoolers at 5 years from previous servicing. Ā No pitting, corrosion, calcium, and just very light soot on the air side. Cores pressed out easily. I attribute this to a friendly environment of 3 months per year in salt water, 9 months in fresh lake water, and following the SBMAR protocol since new. Happy Camper.

      Started by: BAL in: General Discussion

      1 Reply
      January 27, 2023 at 9:13 am Yes, aftercooler servicing is rather simple and straightforward and pays big dividends.Ā  Clearly the 9 months of freshwater life is a big help too.Ā  If you have some photos do post them.Ā 

      Last Post by: Rob Schepis posted: 1 year ago

    • Plastic shredding

      This topic has 4 replies, has 3 voices, and was last updated byRob Schepis 1 year ago

      October 3, 2022 at 12:55 pm 6BTDA, 330s, cpl 1975. Found soft plastic pieces in bilge under fan belt, and some nestled under pulley.<br />Canā€™t trace the source, pulleys all spin freely. Need help figuring where they came from and what to do. Also, can I run the engine at lower rpm (1,000) to warm it up for an oil change while I sort this out? Thanks much, Ā Bruce

      Started by: BAL in: Cummins Marine Engines

      4 Replies
      October 5, 2022 at 1:39 pm Yup, good to change them out proactively..

      Last Post by: Rob Schepis posted: 1 year ago

    • Alternator Wire

      This topic has 2 replies, has 2 voices, and was last updated byBAL 3 years ago

      November 19, 2020 at 9:57 am Delco 19SI, 5 years old, Cummins 330ā€™s. Canā€™t get the 3 wire plug out. Is there a tab on it that Iā€™m missing? Any tricks to removal without damage? Thx, Bruce

      Started by: BAL in: Cummins Marine Engines

      2 Replies
      November 21, 2020 at 11:26 am Thank you!

      Last Post by: BAL posted: 3 years ago

    • Checking oil pressure with a mechanical gauge

      This topic has 5 replies, has 3 voices, and was last updated byTony Athens 5 years ago

      December 19, 2018 at 2:31 pm I’d like to confirm oil pressure with a mechanical gauge on my 6BTA 330’s, and maybe leave the gauge(s) in place as a back up. The preferred hook up on top of the oil filter head is only doable with a 90 degree elbow since the heat exchanger is in the way. Of course, a tight fitting has the elbow pointed toward the block. Any way to get the elbow pointed the right way without over torquing or is there an easier place to tap into oil…

      Started by: BAL in: Cummins Marine Engines

      5 Replies
      December 20, 2018 at 6:14 pm Attached is pic of an alternative, but great place to get accurate Oil Pressure–1/8″ NPT.. Tony

      Last Post by: Tony Athens posted: 5 years ago

    • Happy Aftercoolers

      This topic has 2 replies, has 3 voices, and was last updated byAndrew Smith 6 years ago

      January 14, 2018 at 10:12 am Twin 6BTAs, 330s. Just over four years ago I replaced my P.O. neglected aftercoolers with sbmar lubed aftercoolers with the copper cores. I am now servicing the aftercoolers and happy to report that the cores slid out with finger pressure, there was no corrosion or pitting, very minor scaling, and minor oil residue. That said, the boat lives and breathes in salt water for over 3 months a year and mostly rests in fresh water for the remainder.…

      Started by: BAL in: Cummins Marine Engines

      2 Replies
      January 20, 2018 at 12:15 am When these Cummins aftercoolers fail from neglect what usually happens. A friends volvo diesel aftercooler failed while offshore and he ended up rebuilding the engine. Sad thing is he had just rebuilt it 6 months before that. Thanks,

      Last Post by: Andrew Smith posted: 6 years ago

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