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    • Cummins Marine Forum Topics
    • EP9 Fuel Return

      This topic has 7 replies, has 3 voices, and was last updated byBob Fitch 3 years ago

      June 27, 2020 at 9:51 am Hi Tony, I have just rebuilt a 6bta M2 300hp with an earlier Denso EP9 pump. The engine had a straight piece of pipe into the Denso pump block for the return line instead of a Banjo. The engine runs well on test but fuel drains down on shutdown and requires re priming, is there normally some sort of relief valve in the banjo to stop run back and maintain pressure. I am also seeing a fair amount of air passing through the system, but not enough t…

      Started by: Bob Fitch in: Cummins Marine Engines

      7 Replies
      June 30, 2020 at 1:01 am Cato Many thanks, I have struggled to locate the banjo type in the Uk but eventually managed to find one last evening. The thread is an M14 1.5 so I am told. It is partly Cummins (the banjo) and partly ND (the valve) so I have found a generic one! Appreciate the help

      Last Post by: Bob Fitch posted: 3 years ago

    • need to increase boost on planing

      This topic has 8 replies, has 5 voices, and was last updated byLouis Miceli 4 years ago

      June 8, 2019 at 6:49 am Hello all, i have a 1996 maxum with mechanical 8.3 cta 420 diamonds, 450 hours. Boat planes off slowly and has trouble getting over the hump. bottom is clean, after-coolers done Tony’s way last season, turbos rebuilt 30 hours ago, new fuel filters, 1 inch of pitch removed from props, new water pumps, air seps and belts, temps at cruise 160. I am getting black smoke as well only upon planing and some fuel in the water dockside. i have r…

      Started by: Louis Miceli in: Cummins Marine Engines

      8 Replies
      June 10, 2019 at 6:56 pm The Envirovent system is a whopping good product.– i have read the article about the b series what are the benefits on the c series?

      Last Post by: Louis Miceli posted: 4 years ago

    • B-series turbocharger differences

      This topic has 8 replies, has 3 voices, and was last updated byTony Athens 5 years ago

      September 27, 2018 at 6:48 am Greetings! I’m new to this forum, but have already had lots of help from the information available on this site. Thanks for providing sbmar.com, Tony! My 29ft boat is powered with a cpl 1570 220hp/2500rpm engine coupled to a Stern Powr 1000 outdrive. I’m having issues getting on plane and am currently working through the setup, eliminating any potential problems. The engine has been modified a little and is currently using a SWAC ins…

      Started by: Cato Jensen in: Cummins Marine Engines

      8 Replies
      October 14, 2018 at 2:59 pm Obviously, Test C was the best for overall performance and engine loading.. If the engine is in good shape and “well gauged” and alarm protected, the cooling system is up to spec, then running with the Test C prop at 2300 to maybe 2400 RPM should be fine as long as the test weight of the boat does not change. Tony

      Last Post by: Tony Athens posted: 5 years ago

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