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    • Cummins Marine Forum Topics
    • Engines Coming Up To Temp at Very Different Rates

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

      November 17, 2019 at 1:07 pm Engines are 1998 era Cummins 6BTA 5.9 330 HP about 1680 hrs in a Carver 405. I have noticed that my port engine comes up to temp much faster than the starboard engine. They maintain steady running temp once they get there but the starboard engine takes at least twice as much time to get there. The starboard engine had the heat exchanger replaced just before in bought it in July. Coolant levels on both engines are steady. I took a look at the imp…

      Started by: Frank in: Cummins Marine Engines

      4 Replies
      November 17, 2019 at 5:32 pm Might be easier for you to start at the water heater and follow the two rubber hoses back to the engine rather than starting at the engine if you are new to these engines.

      Last Post by: Rob Schepis posted: 4 years ago

    • O Ring Diameter Conundrum 6BTA 5.9 330hp 1998 Era

      This topic has 2 replies, has 3 voices, and was last updated byFireisland1 4 years ago

      August 16, 2019 at 1:50 pm I recently serviced the new to me aftercoolers as per the SeaBoard way. They looked in pretty good shape and I had no issues pulling the core and cleaning. I reassembled them using the 3/16 diameter orings though the ones that I took off were the small 1/8″. There didn’t seem to be a lot of squish resistance and the cap and housing met without much force applied. I chose the 3/16 because I read on this forum or perhaps boatdiesel.co…

      Started by: Frank in: Cummins Marine Engines

      2 Replies
      August 16, 2019 at 6:24 pm When you use the correct o ring, there is minimal interference. You may not even notice it when tightening down the bolts. If you put in too large of an o ring, the gap will be very noticeable and will require significant force to mate the cap to the case. If so this will deform and pinch the o ring.

      Last Post by: Fireisland1 posted: 4 years ago

    • Best to Pressure Test Just the Core or Asembled Unit forAftercooler 6BTA 5.9 M3

      This topic has 2 replies, has 2 voices, and was last updated byFrank 4 years ago

      July 11, 2019 at 11:16 am I’m the new owner of a pair of 6BTA 5.9 M3 330hp. One of my first projects will be to service the aftercoolers. I’ve looked on this forum, boat diesel and some youtube videos of this being done. Some appear to service and reassemble the core into the housing and then pressure test and some appear to have the core tested separately. My question is what is the best practice, core test, test fully assembled, both? Thanks, Frank

      Started by: Frank in: Cummins Marine Engines

      2 Replies
      July 12, 2019 at 2:19 pm Got it, thanks Rob

      Last Post by: Frank posted: 4 years ago

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Viewing 3 topics - 1 through 3 (of 3 total)