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Viewing 20 topics - 1 through 20 (of 1,075 total)
    • Cummins Marine Forum Topics
    • 180hp cummins to 210 hp cummins

      This topic has 2 replies, has 2 voices, and was last updated by michael semien 17 minutes ago

      October 12, 2018 at 3:31 pm Hi Tony I have a 31 Bertram with 2 180hp cummins diesels that are old but run just great with no major issues. My top end speed is about 16 knots at max rpm on both engines. I am running 20 x 20 props behind twin disc 2:1 running gear. I heard from the local gallery change the props, change the gear, change the injector pump etc. I would like to keep these engines until they die. What can I do to increase the hp to at least 210hp and get more s…

      Started by:  michael semien in: All Other Marine Diesels


      2 Replies
      October 15, 2018 at 12:31 pm Excellent response. Would changing from these twin disc to 1.56 ZF 63a’s be almost seamless as far as size or would I need more modifications. Thanks. Capt. Mike

      Last Post by:  michael semien posted: 17 minutes ago

    • Yanmar 4lh- STP hydrolock?

      This topic has 1 reply, has 2 voices, and was last updated by David Wesner 34 minutes ago

      October 15, 2018 at 9:33 am Good afternoon gents and thanks for the box of goodies I purchased in August.(Engine alarms and fuel filtration kits) I sucked up debris into my poorly designed intake(Mainship Pilot 34′) and had an overheat back in May. I corrected the intake problem and the engine ran fine all year. Last week while trying to start stbd. engine, it would not start. I figured low battery, went away for a week and checked it yesterday and same situation. I …

      Started by:  Joseph Sesack in: General Discussion


      1 Reply
      October 15, 2018 at 12:14 pm how did you try to bar the engine over? I’ve used the alternator nut in the past. Do you have a picture of the exhaust design? D

      Last Post by:  David Wesner posted: 34 minutes ago

    • Zeus Pods: Good, Bad, Ugly??

      This topic has 5 replies, has 5 voices, and was last updated by Paul Greenhalgh 3 hours ago

      October 14, 2018 at 10:15 pm I am considering buying a Meridian 441 flybridge ‘motor yacht’, which is 47’ LOA and 31,000lbs. These come with various engine configurations but commonly, with QSB 425’s which can be either shaft-drive or Zeus pods. All my personal experience to date is with 6BTA 370’s in a conventional shaft drive arrangement. I am after some of Seaboard’s famous frank and honest advice: should I run away from pod drives….or go for them if …

      Started by:  Paul Greenhalgh in: Cummins Marine Engines


      5 Replies
      October 15, 2018 at 9:12 am Thanks to all….just the practical advice I was looking for. I’ll be limiting my search to non-pod models going forward.

      Last Post by:  Paul Greenhalgh posted: 3 hours ago

    • Propping the 6BTA5.9-M3

      This topic has 6 replies, has 3 voices, and was last updated by Curtis J McNamee 4 hours ago

      October 14, 2018 at 9:12 pm I need to figure out if my engines are propped correctly for the best operating conditions. I have a pair of 6BTA5.9-M3 370 hp engines in my 2002 Silverton 39MY Maybe there is already and article written on this. Any help would be greatly appreciated. Cheers, Curt Curt From the Great Pacific NW

      Started by:  Curtis J McNamee in: Cummins Marine Engines


      6 Replies
      October 15, 2018 at 8:03 am Hi Tony- First….thanks for having this site and helping us all out with questions !!! I will gather more information about my engines for you and post it on this thread. Cheers, Curt Curt From the Great Pacific NW

      Last Post by:  Curtis J McNamee posted: 4 hours ago

    • Aftercooler coolant tube leak

      This topic has 3 replies, has 2 voices, and was last updated by Tony Athens 5 hours ago

      October 12, 2018 at 6:35 am Anybody have any experience dealing with a leaking coolant tube on a 250 cummins FWAC CPL953? The small weep is at the connection to the head in what appears to be a freeze plug. I am going to call today for availability of the replacement part. Item 22 in the attached diagram. D Attachments:You must be logged in to access attached files.

      Started by:  David Wesner in: Cummins Marine Engines


      3 Replies
      October 15, 2018 at 7:48 am Same to me?? Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/ Attachments:You must be logged in to access attached files.

      Last Post by:  Tony Athens posted: 5 hours ago

    • Minimum / recommend exhaust size for a Cummins 6BTA 250 HP engine

      This topic has 0 replies, has 1 voices, and was last updated by Michael Womack 16 hours ago

      October 14, 2018 at 8:14 pm I manage the wooden tall ship Enterprize in Melbourne Australia. The engine is a Cummins 6 BTA 250 HP, engine number 60264364. The current exhaust system has pin hole leeks developing to larger holes in the inner dry pipe, the surrounding wet jacket appears to be OK. I have a new exhaust system being finalised, however while to old system had the inner dry pipe made of 3 mm the new exhaust is made from 7 mm pipe. This has resulted in a signific…

      Started by:  Michael Womack in: Cummins Marine Engines


      0 Replies - Can you Help? ...be the First to Respond!

    • Marine Age…Age Is Just a Number

      This topic has 20 replies, has 9 voices, and was last updated by Rob Schepis 19 hours ago

      October 19, 2016 at 5:51 pm Don’t let marine age get the best of your engine room.  Here’s an example of a pair of 330B’s installed in 2002 and a genset from 2005.  That’s 15 seasons for the engines and 12 for the genny.  Dry engine rooms vents,  dry overhead environment or proper drainage of above decks, Wolverine pan heaters and periodic checks and spraying and wiping down with anti-corrosion products.  That’s some of the key ingredient…

      Started by:  Rob Schepis in: Cummins Marine Engines


      20 Replies
      October 14, 2018 at 5:11 pm Mike Pettee wrote: Rob, Your one picture has what looks to be an envirovent on the front of the crankcase. But I dont see the full kit. Does just having that vent on the front of the block help? Mike, Full EnviroVents installs on both engines, off the front crankcase as you noted. Rob "Luck is the residue of good design." Attachments:You must be logged in to access attached files.

      Last Post by:  Rob Schepis posted: 19 hours ago

    • Cummins 6bt does not shut off with key

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 21 hours ago

      October 14, 2018 at 10:20 am I wanted to get input for the following issue with my starboard engine. I recently had the alternator rebuilt.(this might be the issue) I have an on/off key ignition with a push start button at the helm. With the engine not running and when I turn the key on the power goes to the screw in type fuel solenoid and retracts the internal plunger.I get a good reading of 12v. With the engine not running and when I turn the key off the fuel solenoid shu…

      Started by:  John Edwards in: Cummins Marine Engines


      1 Reply
      October 14, 2018 at 3:05 pm #1–What exact 6BT/6BTA do you have?.. #2–If you have an EXTERNAL FUEL solenoid (sounds like it) that you see retract, then it should not retract by just turning on the ignition without starting the engine…. Your wiring is not right. #3–is this a new issue? Tony Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.com/tonys-tips/

      Last Post by:  Tony Athens posted: 21 hours ago

    • B-series turbocharger differences

      This topic has 8 replies, has 3 voices, and was last updated by Tony Athens 21 hours 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 Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for all to see: https://www.sbmar.co…

      Last Post by:  Tony Athens posted: 21 hours ago

    • Winterizing a Cummins 6BT/6BTA

      This topic has 2 replies, has 2 voices, and was last updated by Bill Desmarais 1 day ago

      October 13, 2018 at 7:03 am Hello all, I hauled my little lobster boat last week. Getting cold up here in NH. Marina contracts up here in the northeast end on Oct 15th for the most part. The raw water cooling circuit in the 370 needs to be winterized. How to do it? How much RV anti freeze required for the Cummins 6BT/BTA to winterize? I think I captured the information and procedure for winterizing a marine diesel in the following three videos. For what it’s wort…

      Started by:  Bill Desmarais in: Cummins Marine Engines


      2 Replies
      October 13, 2018 at 5:12 pm yup…3 gals would be plenty. The 370 in my boat has a 5″ Centek horizontal muffler…drains hauling up the ramp. 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Last Post by:  Bill Desmarais posted: 1 day ago

    • Is fresh water flushing worthwhile? 1 2 3

      This topic has 50 replies, has 20 voices, and was last updated by Mike Mason 2 days ago

      January 19, 2017 at 8:08 am Years ago, following Tony’s recommendation, I hooked up fresh water flush fittings to my engine’s strainer and started flushing religiously. Within less than a year I noticed that the engine zincs were holding up much better; in fact after three years they are still going strong. I also believed that I was reducing corrosion on my raw water metal components, particularly the after cooler. Tony has implied that you can double the inte…

      Started by:  David Marchand in: General Discussion


      50 Replies
      October 13, 2018 at 8:27 am Our system is very simple. We used the port on the water pump after the impeller. From there we run a hose to each port and starboard lazarette At the hose end we have a simple pvc shut off and a garden hose hook up. After each use, with engines off, we hook up dock water and let it flow. Have to make sure your exhaust is set up for this as you don’t want the water to sit or backflow from the exhaust elbow. Also, no lift mufflers. …

      Last Post by:  Mike Mason posted: 2 days ago

    • 4BTA Temp Sender options

      This topic has 2 replies, has 2 voices, and was last updated by Dan 2 days ago

      October 10, 2018 at 7:20 pm I currently have an aftermarket 195 degree temp alarm sender, a VDO temp alarm 205 degree sender? and gauge sender fitted to the cylinder heads of my engines. I’ve found an aftermarket NMEA 2000 probe that can be plugged into my Simrad MFD’S and have further alarms (visual and audio) and another temp gauge on the MFD displays. Is there an alternative option to fit another temp sender probe in a 4BTA? Tony mentioned another option for…

      Started by:  Dan in: Cummins Marine Engines


      2 Replies
      October 13, 2018 at 3:09 am Thanks again Tony

      Last Post by:  Dan posted: 2 days ago

    • New owner of a 38 Bertram Convertible with 6CTA 480ce's – immediate priorities? 1 2 3 4

      This topic has 66 replies, has 6 voices, and was last updated by Nicholas Cummings 2 days ago

      October 13, 2017 at 10:07 am Just closed on a B38 powered by 2002 6CTA’s with about 1500 hours. This is my first diesel boat so I’ve spent the last month or two pouring over this site and some others to get educated. In 2016 the engines had heads rebuilt, turbos rebuilt, aftercoolers and heat exchangers serviced, and new injectors installed. One engine also had a piston, liner, rings, and bearings replaced and the other got a new belt tensioner and serpentine…

      Started by:  Nicholas Cummings in: Cummins Marine Engines


      66 Replies
      October 12, 2018 at 1:51 pm After seeing my fuel burn numbers go up through the summer to where I was well above the desired curve, I just pitched down (for a second time) another inch and had all the cup removed from my props. With the fresh prop job and a clean bottom (they power washed the bottom while the props were being changed) I’m now burning: 2200 RPM (Port/Stbd): 12.3/14.2 gph 2400 RPM (Port/Stbd: 15.2/17.1 gph (to save you from having to reference the cha…

      Last Post by:  Nicholas Cummings posted: 2 days ago

    • Code 559 low fuel pressure – accelerating 1 2

      This topic has 23 replies, has 5 voices, and was last updated by Luke Nelson 3 days ago

      September 18, 2018 at 5:01 pm Hello, Ive been trying to solve the 559 low fuel pressure alarm for some time now with no results. Right now it only activates when power is put to plane and when WOT. Boat has a pair of 5.9 QSB 355 hp 650 hrs 2007 Here a list of things done with no sucess in order: 1)Replaced racor. (Issue improved but still present) 2)Replaced engine fuel filter and vacum gauge on racor) 3)Replaced pressure sensor on fuel rail. 4)Replaced fuel transfer pump …

      Started by:  Fernando Perez in: Cummins Marine Engines


      23 Replies
      October 11, 2018 at 4:42 pm I have almost the same thing but on a pair of 24V qsc’s, I did almost the as what you have done . I found a way around it (not the right way, but it works 600 hours down) but It will good to hear is you find the right solution. It should not matter I had more issues with the engine I had the remote fuel filter kit on as it had more piping to run through?

      Last Post by:  Luke Nelson posted: 3 days ago

    • Vessel View 4 fuel used

      This topic has 2 replies, has 2 voices, and was last updated by Wayne Spalding 3 days ago

      October 11, 2018 at 12:53 am I recently installed 2 X QSB 5.9 380 engines into my boat equipped with Vessel View 4 indicators I have no tank quantity indication (I use a dipstick), but note there is good fuel flow indication. Can I set the system up to indicate fuel remaining if I give it the tank capacity of the boat? Or at the least, a ‘fuel used’ summary after each trip? Thanks in advance Wayne Spalding Tank quantity ~ 1500ltrs Based Gold Coast, Australia general spo…

      Started by:  Wayne Spalding in: Instrumentation & Electronics


      2 Replies
      October 11, 2018 at 4:27 pm Thanks Corey, it’s the manual input that I was after, there is no level sensor in the tank Based Gold Coast, Australia general sport fishing

      Last Post by:  Wayne Spalding posted: 3 days ago

    • Loss of fuel p7100

      This topic has 5 replies, has 3 voices, and was last updated by Apro.mw 4 days ago

      October 10, 2018 at 12:44 pm I have a total loss of fuel at the injectors on my p7100. No fuel when i crack the lines at the injectors. I can see the pump is turning through the inspection port on the timing cover. Any ideas on where to start with this? Boat was running fine then started to black smoke heavily out the exaust then the engine just died and wont restart. 600 hours on motors.

      Started by:  Apro.mw in: Cummins Marine Engines


      5 Replies
      October 11, 2018 at 10:06 am It ran fine all summer long until the issue

      Last Post by:  Apro.mw posted: 4 days ago

    • Hose clamps

      This topic has 0 replies, has 1 voices, and was last updated by Mike Schmidt 4 days ago

      October 11, 2018 at 8:36 am I’m about to buy all new hoses for my 6btas but I have a question about the spring loaded hose clamps. Many of the old hoses on my boat leak unless I cinch the clamps all the way tight… which seems to me defeats the point of the spring loaded feature. With new hoses and clamps, how tight to you make them?

      Started by:  Mike Schmidt in: All Other Marine Diesels


      0 Replies - Can you Help? ...be the First to Respond!

    • Gear Oil Coolers

      This topic has 4 replies, has 3 voices, and was last updated by Mike Schmidt 4 days ago

      October 9, 2018 at 11:01 am I have “stock” gear oil coolers on my 2006 330btas (saltwater boat). After reading Tony’s article recommending replacing these as a preventative measure, I’m considering it… but since they’re very expensive and there’s no indication that they’re failing, I just want to make sure this is a smart investment. What’s the consensus here on preventative replacement?

      Started by:  Mike Schmidt in: Cummins Marine Engines


      4 Replies
      October 11, 2018 at 8:32 am Tony Athens wrote: Personally, I do not share that opinion, at least operating in salt water and / or with the “in general” lower quality of the oil coolers that come on “todays” light weigh high HP/liter diesels. Seems gear oil coolers that came on the old heavy iron engines never had the issuse we see today.. They were like a part that was “out of sight, out of mind” I also believe the if one does not diligently flush with fresh …

      Last Post by:  Mike Schmidt posted: 4 days ago

Viewing 20 topics - 1 through 20 (of 1,075 total)