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Viewing 7 topics - 1 through 7 (of 7 total)
    • Cummins Marine Forum Topics
    • Exhaust housing – Opinions needed.

      This topic has 5 replies, has 3 voices, and was last updated byVictor 2 years ago

      February 22, 2022 at 9:46 am Corrected my exhaust issues a couple of seasons ago and I knew the turbos were questionable but I didn’t want to open that can of worms at the time. Fast-forward, I opened the can of worms.Ā  What do you guys think? Any benefit to replacing the turbo or should I bolt it back together and send it? Here’s the boost readings for my 330 6BTA 3psi @ 1500RPM 9psi @ 2000RPM 11psi @ 2200 RPM 14psi @ 2400 RPM 26psi @ 2900RPM Let me know what y…

      Started by: Victor in: Cummins Marine Engines

      5 Replies
      February 23, 2022 at 8:02 am Thanks. I’ll get some pictures of the wheel. Exhaust is off the boat. I did make a dry riser that took advantage of as much height as I could and made sure the mixer drained with gravity. Mind you this boat had cummins mixers on it for 20 years which had very little pitch to them.Ā 

      Last Post by: Victor posted: 2 years ago

    • 330 6BTA side cover gasket

      This topic has 20 replies, has 5 voices, and was last updated byJ Dragon 2 years ago

      November 19, 2017 at 8:38 am I’ve got an oil leak from the the side cover on my 330 6BTA. Looks like the gasket is cracked and brittle. Can anyone tell me if I’ll be able slide the side cover out without removing the injector pump? I was planning on removing the aftercooler and fuel block for clearance. Not sure how long the bolt behind the pump is but if it’s 3/4 -1 inch, it should sneak out. Let me know what you guys think. Thanks Vic

      Started by: Victor in: Cummins Marine Engines

      20 Replies
      February 8, 2022 at 7:44 pm I was curious which injection pump Victor was able to sneak behind to replace his tappet gasket. Thanks VictorĀ 

      Last Post by: J Dragon posted: 2 years ago

    • 1999 6BTA blow by 1 2

      This topic has 24 replies, has 8 voices, and was last updated byThomas whittemore 2 years ago

      November 5, 2021 at 6:40 am Have a 1999 Tiara 3100 with twin Cummins 6BTAs. Starboard engine is original 1998 version, port a 2015 version. Do not know history behind newer engine. It does not smoke like older engine at idle. Only 700 hours on older engine. Turns up to 3150 WOT neutral. 2650 WOT under load. Getting new props to allow turn up to 2900. Do not know why wrong pitch props on boat. Cannot re-pitch to what is needed. Installed envirovent on starboard engine yet t…

      Started by: Thomas whittemore in: Cummins Marine Engines

      24 Replies
      January 16, 2022 at 6:44 am One more question: can I locate smaller bypass vent filter closer to #6 and turbo inlet filter vs being close to #1 inlet? Closer to turbo inlet allows some of the escaping smoke to be drawn into turbo inlet.

      Last Post by: Thomas whittemore posted: 2 years ago

    • 6BTA – Inner gear cover gasket replacement

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

      November 23, 2020 at 1:26 pm I’ve been chasing an oil leak on my 6BTA – 330 for quite some time and finally tracked it down to the inner gear cover on the front of the engine. I can see where the gasket tore and worked it’s way out under the water pump. Before I get into it. Has anyone here had any luck replacing that gasket. I know the pump gear needs to be removed as well as the cam gear both of which are pressed on. The cam gear looks like it will be he…

      Started by: Victor in: Cummins Marine Engines

      4 Replies
      November 26, 2020 at 6:46 pm Here is the pages from my Cummins manual. They say 350 degrees. Just dont go over 400, use a laser thermometer to be sure.

      Last Post by: Francis Valerio posted: 3 years ago

    • Another 6B Oil Leak Question.

      This topic has 1 reply, has 2 voices, and was last updated byFrancis Valerio 3 years ago

      October 19, 2020 at 10:49 am Been chasing an oil leak on my starboard engine. I thought it was the front seal or cover so I replaced them both. The oil seems to be dripping from the front outboard side of the engine. I can’t get my eyes on it so it’s difficult to get pics. All I know is that it drips from that corner. The oil filter adapter is dry. The only remaining gaskets to replace (that I can think of) is the gear cover gasket that mates to the engine or …

      Started by: Victor in: Cummins Marine Engines

      1 Reply
      October 19, 2020 at 3:47 pm Check the oil cooler, check the Turbo oil return orifice. Front cover gasket. Get a mechanics mirror with a gooseneck and flashlight. Oil pan???

      Last Post by: Francis Valerio posted: 3 years ago

    • Blow by test for 370b

      This topic has 6 replies, has 3 voices, and was last updated byVictor 7 years ago

      December 9, 2016 at 4:41 pm Had a couple question on the blow by test for a 370b. I read Tony’s article on the test but have heard from other people that I should use a larger orifice when testing a 370B. I think it was .301 vs .221 orifice. Does it really matter? And if i use a larger orifice will that change the number im looking for, such as In water at the manometer. Also i believe the tests needs to be done while the engine is under load? So it needs to be runni…

      Started by: David Diener in: Cummins Marine Engines

      6 Replies
      December 15, 2016 at 8:15 am Like Tony said. Manage it through SeaBoard’s EnviroVent and go fishing.

      Last Post by: Victor posted: 7 years ago

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Viewing 7 topics - 1 through 7 (of 7 total)