Cummins Marine Diesel Repower Specialists Forums All Other Marine Diesels

This forum contains 71 topics and 395 replies, and was last updated by  trnsmaster 1 day ago.

Viewing 20 topics - 1 through 20 (of 71 total)
    • Cummins Marine Forum Topics
    • Volvo D4 which test do you trust

      This topic has 5 replies, has 2 voices, and was last updated by trnsmaster 1 day ago

      October 17, 2019 at 8:12 pm Fighting lack of power loss of rpms . Computer scan shows weak compression/ power output on cyl #1 & 4, and full output on 2&3. Mechanical compression test shows cyl 1&2 equal and cyl 3&4 equal . However 1&2 are 50 lbs less than 3&4. Which test do you trust ? If computer scan is reading wrong would that mean the computer/ecm is bad ? Thanks

      Started by:  trnsmaster


      5 Replies
      October 19, 2019 at 2:31 pm 1 )850 hrs when happened hasn’t got fixed 870 hrs now due to testing 2) previously 2800 is 20kt. 3000 is 22kt 3200 is 25kt wo@3600is30 3) can’t get over 2400 rpm now because of issue so can’t compare then to now speeds however then 1800was 12kt and 1800 now is still 12kt

      Last Post by:  trnsmaster posted: 1 day ago

    • Detroit Diesel 12L series 60 825 hp

      This topic has 2 replies, has 2 voices, and was last updated by Roger bing 1 week ago

      October 8, 2019 at 6:30 pm I just did injectors on a 825hp series 60 for a friend of mine. Barred engine over and set injector heights accordingly (81mm) after installing unit injectors. Note motor was guaranteed to be in correct position at this time as valves were exactly where i set them during tune up in april. In addition, each injector had to come down. I attributed this to new springs. Boat had run over 100hrs since tune up flawlessly. Upon testing boat toda…

      Started by:  Roger bing


      2 Replies
      October 10, 2019 at 4:19 am I got the same impression as I had the boost issue with my 300 cummins in my boat where the acceleration lagged throttle position. I got the code reader back and am going to run an injector test again to assure we didnt get a bad injector from detroit diesel. After that ill look into how the motor balances boost and fuel during acceleration. I was moving around the back of the motor by the turbo to bleed the engine.. perhaps I knocked somthi…

      Last Post by:  Roger bing posted: 1 week ago

    • Exhaust Design headaches

      This topic has 2 replies, has 2 voices, and was last updated by Tony Athens 2 months ago

      August 10, 2019 at 4:43 pm Hi I have a 28 Foot trailered aluminium mono with a volvo 230Hp KAD43 and sterndrive. Motor is currently being rebuilt due to the common exhaust too low issue. Because there is a flush deck cockpit I have some challenges in redesigning the exhaust. To make it even harder I have been trying to design it so the exhaust still exits out the outdrive (less fume and quiet) My manual states the exhaust pressure spec as 10–30 kPa (1.4-4.3 psi) (1…

      Started by:  Cameron Mckergow


      2 Replies
      August 10, 2019 at 8:35 pm Just ask yourself one question if you go with a shower design.. When one of internal welds or inner pipes rots thru ( it will as they all do), where will the saltwater end up…. The “orange run”, if done right, is the only real solution. Up and over the top , water injected on the downward run. 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…

      Last Post by:  Tony Athens posted: 2 months ago

    • MAN DO836LE401 450 hp rated @ 2600 rpm

      This topic has 2 replies, has 2 voices, and was last updated by Bill Desmarais 3 months ago

      July 3, 2019 at 11:02 am Hello, BillD from the Cummins side of the forum. Well, owned a pair of Volvo 41P 200 hp for a couple of years. OK, my question/s? I’ve been perusing some mid 2004-2008 boats and came across some diesels I’ve never seen, studied, nothing. The MAN 450 hp @ 2600 rpm. I think the engine came out in 2002 ? No longer produced. Anyone have any experience with this particular model MAN ? Thanks, 25 Terry Jason down east, 370 6BTA CPL 2008…

      Started by:  Bill Desmarais


      2 Replies
      July 4, 2019 at 6:26 pm write up way back. https://www.boatsales.com.au/editorial/details/man-power-8265/ was this particular MAN that bad a product ? 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Last Post by:  Bill Desmarais posted: 3 months ago

    • Caterpillar 3056TA 205hp

      This topic has 1 reply, has 1 voices, and was last updated by Bill Desmarais 4 months ago

      June 18, 2019 at 7:34 pm Tony? Anyone ? Familiar with the CAT 3056TA 205 hp…. Saw one in a 2002 boat. Any idea how this particular model behaved, performed, gave trouble, bullet proof, or not ? Cant’ seem to find much info on it and I’m not registered with boatdiesel. Thanks, Bill D 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Started by:  Bill Desmarais


      1 Reply
      June 18, 2019 at 7:51 pm this CAT appears to be a Perkins marine diesel re-branded by CAT 25 Terry Jason down east, 370 6BTA CPL 2008 ZF63A gear, 1.75" shaft, 20X19 DQX

      Last Post by:  Bill Desmarais posted: 4 months ago

    • Volvo TAMD74EDC starting issues.

      This topic has 4 replies, has 3 voices, and was last updated by Jon Foerster 4 months ago

      May 26, 2019 at 8:34 pm Started my weekend like any other at the boat. Get down Friday and wash the boat off. While cleaning up the boat for the Memorial Day weekend we had the stereo playing. This was a good 5 hours of cleaning. Then we decided we wanted to take the boat to another marina for dinner.. And this how it began.. Sorry in advance for all the detail but I want to make sure if i put this out there everyone can understand where it started and where i’m …

      Started by:  Jon Foerster


      4 Replies
      May 29, 2019 at 5:10 am Problem finally figured out. “ Guest Battery selector switch” After another day of tracing wires. Testing every fuse and relay it all came back to the first day. Starting when noticing a bad battery issue. When I started the battery switch was on “BOTH” it had been there since I got the boat last year. And when I started. When I started to isolate the battery issue I switched from 1 & 2 to figure out #2 battery was bad. I jus…

      Last Post by:  Jon Foerster posted: 4 months ago

    • Yanmar

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 5 months ago

      April 21, 2019 at 6:46 am Hi tony In yanmar 6ly2astp 370 can you eliminate the fuel cool in this motor like cummings you show on line also ?its in 37 Pc formula thank you

      Started by:  John gill


      1 Reply
      May 7, 2019 at 4:22 am All you have to do is read this and understand your particular situation.. Like like the QSM question I just answered.–Ever application is unique… Plus, an FYI– All of the earlier versions of your engine, and all of the earlier 6BTA 5.9s never had fuel coolers either.. Think about it. https://www.sbmar.com/articles/understanding-marine-fuel-coolers/ Tony Tony Athens Seaboard Founder Go here for the latest stuff we put togeth…

      Last Post by:  Tony Athens posted: 5 months ago

    • Seaboard Marine parts received

      This topic has 2 replies, has 3 voices, and was last updated by Anton Wiliams 5 months ago

      May 16, 2018 at 5:01 pm Thanks to Seaboard Marine my spare parts order received in South Africa formy Cummins 450hp Diamond series. Attachments:You must be logged in to access attached files.

      Started by:  Awie Fourie


      2 Replies
      April 24, 2019 at 8:02 am Hey, you might also look at spare marine parts – https://imo-europe.com/ from Polger company, based in Europe.

      Last Post by:  Anton Wiliams posted: 5 months ago

    • exhaust temp

      This topic has 2 replies, has 2 voices, and was last updated by Rob Schepis 6 months ago

      April 9, 2019 at 6:02 pm I just installed your exhaust temp guage on the yanmar 4jh3-hte. I’m reading near 80 degrees celsius on the coolant temp and 350 degrees Fahrenheit when warmed up. engine runs fine but some very light white smoke at idle and throughout rpm. also tiny bit of sheen in the water. Is 350 too low? If so how do i increase exhaust temp? note: could it be location of probe? see picture. DM Attachments:You must be logged in to access attached f…

      Started by:  Dominic Maionchi


      2 Replies
      April 10, 2019 at 6:17 pm You’re a brave man (with quality cleats and dock lines) ! Would be good if egt stayed in that neighborhood. Keep us posted. Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 6 months ago

    • Engine choice?

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 6 months ago

      March 19, 2019 at 9:41 am Looking at two basically identical boats (OA 52 sedan…’05 & ’07)…one (’05) is powered with twin Yanmar CXM 500hp and the other (’07) with Yanmar 480hp 6ly…hours on both are roughly 1,200. Found a lot of info on Yanmar 6ly 480 but not much on the CXM… Any insight on either would be appreciated….obviously full engine survey by Yanmar guy if it gets to the deal stage. Thanks Bryan

      Started by:  Bryan Dougherty


      1 Reply
      April 2, 2019 at 6:40 pm I was an authorized Yanmar dealer for close to 15 yrs in S. Calif.. I really liked some of the engines Yanmar offered, and in some cases were a better choice than a Cummins product in some applications………..With that said, the engines you are looking at were definitely not on that list………..Why you ask? Simple ………..ZERO after sales support and they came and they went away very quickly ( in le…

      Last Post by:  Tony Athens posted: 6 months ago

    • Yanmar 6LP-DTE Fuel Cooler Delete 1 2

      This topic has 21 replies, has 3 voices, and was last updated by Frank D 6 months ago

      March 23, 2019 at 10:05 am Absolutely stoked to have signed up here. I apologize for the Yanmar question, but I know at one point Tony offered a fuel cooler elimination for the 6lp. My General Marine has an above deck fuel tank on the stern so I was thinking about eliminating my fuel cooler. Does anyone know who sells a kit or would SBMAR be willing to make one up for me?

      Started by:  Frank D


      21 Replies
      April 2, 2019 at 6:18 pm Thank You I appreciate it.

      Last Post by:  Frank D posted: 6 months ago

    • Qsb 5.9 aftercooler test pressure

      This topic has 7 replies, has 3 voices, and was last updated by Tony Athens 6 months ago

      March 24, 2019 at 6:32 am I have removed my intercoolers for the first time and found one to be totally unserviceable and I’m hoping the second will pass the leak test. What is is pressure used on the core and do I need to test the fully assembled unit too? I believe the replacement unit has been modified to the Seaboard standards already and doesn’t need to be greased William Milanese

      Started by:  William Milanese


      7 Replies
      March 26, 2019 at 6:06 am 20 PSI is fine………Pits inside the cooler housing do not matter–Only the flat sealing surface ( on each end) after block sanding…….. Our coolers come pre-greased and are good for 2 years or so before you need to service it again if in seawater.. If you fresh water flush diligently when at the dock, you can easily double the service time interval. Tony Tony Athens Seaboard Founder Go here for the latest stuff …

      Last Post by:  Tony Athens posted: 6 months ago

    • temp boost guage 1 2

      This topic has 25 replies, has 3 voices, and was last updated by Tony Athens 7 months ago

      March 17, 2019 at 3:46 pm I would like to install your SMX Marine Boost / Pyro (EGT) Turbocator Gauge Kit on my yanmar 4jh3-hte. questions before i order: 1. please confirm that I can install on this engine. 2. where do i install the pyrometer? do i drill and tap the stock exhaust mixing elbow? if so is there a preferred location? 3. where do i install the boost sensor? intake manifold? is there a place i can install it without removing the intake manifold? 4. if …

      Started by:  Dominic Maionchi


      25 Replies
      March 24, 2019 at 3:41 pm Keep the diameter as large as possible– Drop the pitch. 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: 7 months ago

    • Onan MDKWB 9 kw oil leak

      This topic has 9 replies, has 3 voices, and was last updated by Jim Rosenthal 7 months ago

      March 6, 2019 at 6:22 am This post on the forum is to discuss a sudden oil leak on an Onan generator. In my ’97 Tiara I have an Onan MDKWB with 1,330 hours. It has run 151 hours since 2012. Recently replaced two raw water hoses and the Johnson raw water pump (all of which were leaking), and performed oil service with filter using on board oil change system. The enclosure sides and top have been removed. The oil analysis results returned some sodium and slightly ex…

      Started by:  Denny Gaultney


      9 Replies
      March 18, 2019 at 9:27 am You might think about plumbing a coolant loop through a new hot water heater. This will get you really HOT water any time you are running that main engine, and it stays hot for a day or two after you shut it off. Virtually all marine water heaters (Raritan, Seaward, IsoTemp) are available with the coolant loop provision, and I can tell you from experience with our Hatteras 36 that it works very well indeed. Also, if you run the engine (and, by e…

      Last Post by:  Jim Rosenthal posted: 7 months ago

    • Yanmar 6LY main heat exchanger color

      This topic has 9 replies, has 5 voices, and was last updated by Tony Athens 8 months ago

      February 4, 2019 at 9:04 am Please look at the attached photo. I am helping a friend who is considering buying a 2006 Mainship Pilot 34 with a Yanmar 6LY 370 hp engine. A “Yanmar Certified Technician” who was present at the seatrial said that the main heat exchanger, which is very visible in this pic, is discolored and is a sign of severe overheating. Well the color is certainly not the Yanmar silver grey, but it is entirely uniform and doesn’t look like…

      Started by:  David Marchand


      9 Replies
      February 4, 2019 at 7:31 pm I wish I had a much better picture so I could really “SEE”, but even a “fuzzy” view tells me that this engine, when it ran or did run, is being squeezed to the max, plus the signs of a loss of coolant in the combo exhaust manifold/coolant tank are more than obvious…………..Walk away unless someone gets a $25-30K concession on the $$.. The 6LYA is a very good engine, and IMO, is as good as a 370 …

      Last Post by:  Tony Athens posted: 8 months ago

    • Help me out here…

      This topic has 4 replies, has 3 voices, and was last updated by cale domek 9 months ago

      January 13, 2019 at 3:03 pm Cummins 6BTA. 380ish hours Running perfectly with no issues. Racor 1000s had some gunk in the bottom so I pull it apart, clean it, change filter and replace filter. Fill the racor, and go to prime and she doesn’t seem to prime. Fire her up and she doesn’t like it. Runs for a few then sputters out. Only thing I touched was the filter. I took the below vlinked video cause it shows the sound I’m getting when I’m priming…

      Started by:  Mike Pettee


      4 Replies
      January 21, 2019 at 8:17 pm I had a cracked 5 cent oring on the t handle that had me stumped for hours, she would prime and start but would sputter out after a while. sea ray 440eb

      Last Post by:  cale domek posted: 9 months ago

    • Onan 5MDKBH Generator

      This topic has 9 replies, has 4 voices, and was last updated by Patrick 9 months ago

      January 11, 2019 at 7:25 pm Hello All, Can anyone tell me if this 2006 5KW generator has a replaceable zinc? Can’t find any obvious sign of one. Thanks.

      Started by:  Patrick


      9 Replies
      January 13, 2019 at 1:55 pm That is a slick set up. Well done. Dan wrote: Patrick wrote: Did you plumb a permanent adapter to hook a garden hose too? Through a tee on the intake side of the raw water strainer (blue valve in picture attached) that is connected to a distribution manifold that both engines, air con, live well pumps, wash down pumps and the generator are fed through a water hookup on deck, I can flush all with the garden hose or the onboard freshwater suppl…

      Last Post by:  Patrick posted: 9 months ago

    • 6LYA-STP Turbo exhaust question

      This topic has 1 reply, has 2 voices, and was last updated by Tony Athens 10 months ago

      December 22, 2018 at 4:19 pm I took off the turbo exhaust riser and mixer to replace a stringer and I noticed some discoloration on the exterior of the turbo exhaust. Was curious if this is normal or something that needs to be looked into further. Attachments:You must be logged in to access attached files.

      Started by:  Collin4350


      1 Reply
      December 22, 2018 at 7:44 pm Send me those pics direct in High Res.. Also stand back 2-5 ft , (or what is needed).. I want to “see” your exhaust mixer/riser or what ever you have as installed in your boat.. moc.rambs@ynot 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: 10 months ago

    • 99 cat 3208ta raw water pump impeller

      This topic has 4 replies, has 3 voices, and was last updated by Rob Schepis 10 months ago

      December 18, 2018 at 9:23 pm I’m trying to find impellers for a cat 3208 raw water pump. Browsing around the internet it looks like a 17000p impeller is the right one. Anyone know if that will work? I put it on here rather than call so it might help someone else out.

      Started by:  john


      4 Replies
      December 19, 2018 at 9:20 am I’m not up on exactly when Cat used which pump but the 3208 could take a Sherwood or a Jabsco so check the pump cover carefully for pump ID… Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 10 months ago

    • Hose clamps

      This topic has 5 replies, has 4 voices, and was last updated by Rob Schepis 10 months 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


      5 Replies
      December 4, 2018 at 6:00 am Not to fancy but might be worth a try, the price of admission is certainly not too steep… https://www.lowes.com/pd/AMERICAN-VALVE-Torque-Wrench/1244081?cm_mmc=SCE_BINGPLA_ONLY-_-RoughPlumbingElectrical-_-PlumbingConnectionsAndSupport-_-1244081:AMERICAN_VALVE&CAWELAID=&kpid=1244081&CAGPSPN=pla{ifdyn:dyn}&k_clickID=bi_264334745_5481216628_13814743298_pla-1100008777698_c_&msclkid=7a224af549211116d06c16f330e2b7be Rob "Luck …

      Last Post by:  Rob Schepis posted: 10 months ago

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