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    • Cummins Marine Forum Topics
    • Please evaluate my exhaust system

      This topic has 17 replies, has 7 voices, and was last updated byCharles A. Beever III 4 years ago

      August 12, 2019 at 1:23 pm Recent repower- older 250hp 6bta in a 236 Mako inboard. Engine was a spare irrigation unit in storage. Little to no use from what I was told. I just acquired the boat and love it. I realize I need to upgrade cooling system tank and plumbing away from the old ā€œcorner mounted tankā€ system. Main question here is do I need a riser? Iā€™m not comfortable killing engine while out fishing due to possible backflow to turbo. Turbo has some broken blades …

      Started by: Charles A. Beever III in: Cummins Marine Engines

      17 Replies
      September 17, 2019 at 1:28 pm Thank you Bill. I will help you any way I can. Am currently still gathering critical measurements to find out what kinds of unanticipated hurdles yet await us. These guys are fun to work with.

      Last Post by: Charles A. Beever III posted: 4 years ago

    • RPM fluctuation

      This topic has 13 replies, has 5 voices, and was last updated byBrian 4 years ago

      July 25, 2019 at 9:41 am Hi, Anybody have any idea why one 5.9 6BTA which runs great will get to cruise at 2500 rpms then have the rpms drop to 2000 and then return 2500, and repeat. New fuel filters. The other engine runs fine. 150 hours on recons.

      Started by: gaffer45 in: Cummins Marine Engines

      13 Replies
      August 2, 2019 at 7:52 am Racors and last-chance filters changed. Topped off fuel, sea trialed last night, problem solved! Wish all could be so easy. David, gaskets are fine at fuel fill. Thanks.

      Last Post by: Brian posted: 4 years ago

    • SMX 1730 Installation

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

      June 5, 2019 at 8:26 pm I have Sherwoods Raw Water Pumps on both my 6CTA8.3 Cummins. I’m planning on proactively upgrading to the SMX 1730 pumps. Never having done this particular job before, I see that it is gear drive. My question is, do I have to drain the oil first in order to change them out?

      Started by: Bucket List II in: Cummins Marine Engines

      2 Replies
      June 6, 2019 at 5:01 am Agree with David. The oil drains out of the “gear case” when the engine is off. The oil is engine oil, drains into the oil pan. Hope this helps. I have also done the upgrade, easy.

      Last Post by: bluebyu posted: 4 years ago

    • Cummins 6bta alternator

      This topic has 7 replies, has 6 voices, and was last updated byHarry Alverio 5 years ago

      December 26, 2018 at 11:30 am Hi to all and Happy New year!! I found that my alternator for my cummins motor is overcharging past 14volts. This causes the alternator field 15 amps fuse to blow, and then the alternator stop charging. Is the alt voltage regulator damaged?any suggestion? Thanks

      Started by: Harry Alverio in: Cummins Marine Engines

      7 Replies
      December 29, 2018 at 11:53 am Thanks to all for help. Indeed the voltage regulator is giving problems. Bought new voltage regulator planning on installing next week. Will keep u posted

      Last Post by: Harry Alverio posted: 5 years ago

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Viewing 4 topics - 1 through 4 (of 4 total)