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Viewing 20 topics - 1 through 20 (of 1,275 total)
    • Cummins Marine Forum Topics
    • Another QSC Exchanger/Cooler thread

      This topic has 6 replies, has 3 voices, and was last updated by Rob Schepis 58 minutes ago

      February 16, 2019 at 2:28 pm The motor is a 2007 QSC 8.3 500hp. About 1100hrs used in saltwater. No fresh water flush after use. So I finally got around to taking my cooler and exchanger apart. Pics below. I have a few questions. For the heat exchanger, the tubes seem pretty slimy on the anti freeze side. Is this normal? Will the acid bath take care of the crud in the second pic? I rodded the tubes and most of it was clean. the third pic shows what came out. In th…

      Started by:  Kyle G in: Cummins Marine Engines


      6 Replies
      February 20, 2019 at 8:04 am No need to replace. Once the cap is reinstalled the rubber will be captively held in place. You can use your glue of choice to hold it in place to aid in assembly if needed. Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 58 minutes ago

    • Cummins Onan temp switch

      This topic has 2 replies, has 2 voices, and was last updated by Luke Nelson 1 hour ago

      February 20, 2019 at 5:28 am Hi Guys, Does anyone know the temperature the attached temp switch activates at? It it sitting on the exhaust mixer.Basically the engine has done 2 impellers in a month and not shut down. The shut down circuit is working and tested, I am not sure on the temp switch. I could have been that it was seen with no water just in time both times. The engine has not visibly overheated. Short of just replacing what else can be done? It does not seem to …

      Started by:  Luke Nelson in: Instrumentation & Electronics


      2 Replies
      February 20, 2019 at 7:29 am Thanks Rob, The 2nd impeller apparently may not have been new and only lasted 3 weeks or a few trips. I pulled the left overs out of 2 out of the heat exchanger as the it was almost totally blocked with rubber. The intake is clear and the genset is pumping water well out the exhaust. Internally the pump looks ok and has not had a lot of use <1000 hours.

      Last Post by:  Luke Nelson posted: 1 hour ago

    • Smart Craft 2007

      This topic has 5 replies, has 2 voices, and was last updated by DELLA GATTA MASSIMO 21 hours ago

      February 13, 2019 at 3:50 pm I have two Cummins engines 5.9 of 2007 with a SmrtCraft each. I should reprogram the SmartCraft of the right engine as it also displays data from the left engine. How can I proceed since this type of programming can not be accessed from the normal menu? Thank you I have two Cummins engines 5.9 of 2007 with a SmrtCraft each. I should reprogram the SmartCraft of the starboard engine as it also displays data from the port engine. How can I proceed …

      Started by:  DELLA GATTA MASSIMO in: Instrumentation & Electronics


      5 Replies
      February 19, 2019 at 11:09 am Hi Thony, any news for me? Tanks I have two Cummins engines 5.9 of 2007 with a SmrtCraft each. I should reprogram the SmartCraft of the starboard engine as it also displays data from the port engine. How can I proceed since this type of programming can not be accessed from the normal menu? Thank you

      Last Post by:  DELLA GATTA MASSIMO posted: 21 hours ago

    • Converting 6B5.9M from 12 to 24 volts

      This topic has 11 replies, has 4 voices, and was last updated by Robert Cart 1 day ago

      December 18, 2018 at 3:40 am My 6B5.9M was manufactured in 1994 but installed new in 2004 in my sailboat. I’m now converting my electrical system to 24volts and was originally planning to just swap out the alternator and leave the rest of the relatively simple engine electrical systems at 12V. However, as it turns out only a few electronics items need 12V and a simple DCDC converter can handle them nicely. In many ways it would be simpler to convert all to 24V, but h…

      Started by:  Robert Cart in: Instrumentation & Electronics


      11 Replies
      February 19, 2019 at 2:05 am I am still battling with a dual voltage system and have not decided where I land. My latest thought is this. What about using a 24V alternator and starter motor with but keep the 12V panel and starter solenoid? I already must provide low current 12v loads for NMEA2000 and etc. It is then easy to power the panel with that system. This means I can have a 24V start and house batteries and this greatly simplifies charging and redundancy, etc. The 12…

      Last Post by:  Robert Cart posted: 1 day ago

    • Cleaning crankcase breather

      This topic has 0 replies, has 1 voices, and was last updated by Joe Monaco 1 day ago

      February 18, 2019 at 9:57 pm My motor manual says I need to clean the crankcase breather element with a non flammable liquid. What would that be, simple green? Any other suggestions? Manual says oil seal can leak if it isn’t cleaned. Is this due to over pressure if the breather can’t breath?

      Started by:  Joe Monaco in: General Discussion


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

    • Testing generator syphin

      This topic has 0 replies, has 1 voices, and was last updated by Joe Monaco 1 day ago

      February 18, 2019 at 9:51 pm Saw a sticker saying I need to test the syphin every 6 months. How do I do this and do people really check their syphins every 6 month? How do they stop working?

      Started by:  Joe Monaco in: General Discussion


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

    • Coalescing filter question

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

      February 17, 2019 at 10:34 am Did some searching on here and only found 1 thread that had limited info. I have a QSC 8.3 500hp. I took out the Coalescing filter for the first time. It has about 1100hrs on it. Are they serviceable? They are pretty expensive to replace. There is no indication on the gauge that it is pulling a vacuum. Should I wait until I notice that a vacuum is being drawn to replace? I have been cleaning the main filter once a year with the K&N f…

      Started by:  Kyle G in: Cummins Marine Engines


      2 Replies
      February 17, 2019 at 4:05 pm Do you / SBMAR offer any options to this setup? I don’t believe I saw any on the site but I could have missed it.

      Last Post by:  Kyle G posted: 2 days ago

    • What do you see in this picture

      This topic has 4 replies, has 3 voices, and was last updated by Wayne Spalding 2 days ago

      January 28, 2019 at 8:02 pm Watching a story about Giant Blue Fin tuna fishing in Prince Edward Island with the Bruce Brothers Fishing Charter on TV today. Anyone see anything in the photo of the TV?. Seaboard made it to Price Edward Island!… Attachments:You must be logged in to access attached files.

      Started by:  Philip in: General Discussion


      4 Replies
      February 17, 2019 at 1:50 pm Was a great trip! I went on a Bluewater Magazine hosted trip, caught a couple, one @ 750lb and another at 1000lbs. A few beers, lots of lobster- worth doing. Make sure you get a Bruce Bros boat.. Based Gold Coast, Australia general sport fishing Attachments:You must be logged in to access attached files.

      Last Post by:  Wayne Spalding posted: 2 days ago

    • Marine AC

      This topic has 10 replies, has 4 voices, and was last updated by Dan 3 days ago

      February 14, 2019 at 8:21 am My AC pump and strainer are mounted in a near impossible location to access/reach in the boat, I am contemplating moving the strainer to an area that is essentially at the same height as the AC unit itself,the pump will remain at the same level below the waterline. Weed can and does often fill the strainer in a matter of hours,and getting to it requires a midget on board and ends up being a messy affair, I have a great location I can move it to…

      Started by:  Dan in: General Discussion


      10 Replies
      February 17, 2019 at 7:22 am Rodger, Thanks for the input,I have a freshwater flush tee on the intake side of the pump now I have used it to prime the pump on occasion,the preferred time for the strainer to block and the AC to shutdown seems to be around 2AM and the bride goes on the warpath… To clean the strainer I have to raise the entire helm section and crawl across one of the motors reach down and do it entirely by feel.The other option is to open the small access ha…

      Last Post by:  Dan posted: 3 days ago

    • Turbo’s,risers and HX’s

      This topic has 3 replies, has 3 voices, and was last updated by Dan 3 days ago

      February 15, 2019 at 6:43 pm In the lead up to hauling my boat Ive been chipping away at my riser to turbo bolts for six months,they have been on there since new in 06, with a bit of heat,lube some slight tapping , elbow grease and patience one by one they have come free except for one (on the bottom with very limited access) The boat came out of the water on Monday and I took both turbos and risers off, put a little heat on the last stuck bolt and it came free with some ch…

      Started by:  Dan in: Cummins Marine Engines


      3 Replies
      February 17, 2019 at 6:19 am Tony Athens wrote: I really hate to say this, but your turbo in the picture has eaten saltwater is the past for years.. It’s your call if you want to remove that possibility in the future,, Tony I knew that was coming…problem is what to do about it – the HX to riser raw water hose is touching the top of the hatch now on both engines (you can see the port engine HX to riser hose is flattened from this) and its all downhill to th…

      Last Post by:  Dan posted: 3 days ago

    • 6bta aftercoolers never serviced

      This topic has 2 replies, has 3 voices, and was last updated by Rob Schepis 3 days ago

      February 16, 2019 at 6:18 pm Can anyone share an opinion on exactly how far gone these aftercoolers appear to be. The motors are 2002 6bta 370s with 600 hrs each on them in saltwater. They push a 32 topaz owned by an older gentleman who wasnt big on maintenance. To me it looks like they have never been serviced. Maintenance records show just aftercooler zinc replacement. Owner suggested “they dont have enough hours on them” to need aftercoolers clean. I have re…

      Started by:  Doug franzoso in: Cummins Marine Engines


      2 Replies
      February 16, 2019 at 8:17 pm This is a pre-purchase inquiry? With that extended period of neglect they may even show signs of failure at the exteriors in the form of heavy corrosion or cracking of the housing, usually at the upper and lower areas where the end surfaces of the housing mate to the caps. That would prove to the seller he is dead wrong. Tell him you will pay to have them bench serviced and if they are servicable and pass pressure test all is good, if not his d…

      Last Post by:  Rob Schepis posted: 3 days ago

    • Aftercooler Seawater side scale- how clean is clean?

      This topic has 2 replies, has 3 voices, and was last updated by Rob Schepis 3 days ago

      February 16, 2019 at 9:39 am We have had the boat for one year. Bought it with 900 hours on 380hp QSB engines. Up to 1100 hrs now so we pulled starboard engine aftercooler to do clean and check, replace zincs, seals, etc. Found some scale on seawater outlet side(bottom) of tube core. We soaked core tubes for about an hour in 1:10 mix of CLR and water. Cleaned up and rodded tubes with an aluminum rod and copper brush (for a 9mm firearm). All tubes clear but there is stil…

      Started by:  Robert McManus in: Cummins Marine Engines


      2 Replies
      February 16, 2019 at 8:04 pm After you pour the solution in you can put a heavy weight on the core to help seal the base to the foam pad, a 5lb pound plate or similar.. Rob "Luck is the residue of good design."

      Last Post by:  Rob Schepis posted: 3 days ago

    • Exhaust insulation

      This topic has 6 replies, has 4 voices, and was last updated by Rob Schepis 3 days ago

      February 13, 2019 at 4:55 pm After learning (from this site) that my wet exhaust was configured incorrectly I built my own for my 370 6bta. I had a shop way up North do the insulation. They used fiberglass with sewn covers. After three years the stitching on the covers is coming loose and the fiberglass insulation is beginning to leak out. I temporarily wrapped it with fiberglass exhaust tape but I want something that is permanent. Any suggestions? This would only be the dr…

      Started by:  Tim Klassen in: Cummins Marine Engines


      6 Replies
      February 16, 2019 at 6:44 pm Here’s my port riser pics and wrap Rob "Luck is the residue of good design." Attachments:You must be logged in to access attached files.

      Last Post by:  Rob Schepis posted: 3 days ago

    • Oil Behind Water Filter

      This topic has 14 replies, has 4 voices, and was last updated by Mike Steward 4 days ago

      February 11, 2019 at 9:36 am I changed oil and filters this weekend ( A pair of Cummins 6CTA(s) in a 2001 Sea Ray 400 Sedan Bridge. On the portside motor I noticed there is some oil coming out behind the water filter. There seems to be a plate of some sort and oil had been coming out and landing on the top of the filter. I will try to get a photo. I also noticed after the oil change that the port motor is dropping to what looks like @10psi at idle. I plan on checking the ma…

      Started by:  Mike Steward in: Cummins Marine Engines


      14 Replies
      February 15, 2019 at 1:33 pm Yes. Thank you Rob. Mike Steward Sea Ray 400 Cummins 6CTA

      Last Post by:  Mike Steward posted: 4 days ago

    • 1999 6bta 315

      This topic has 11 replies, has 4 voices, and was last updated by Tony Athens 5 days ago

      February 9, 2019 at 2:17 pm I just purchased a 1999 6bta 315 for my boat. I am trying to find the serial number but am lost since there is not data plate. I need some help identifying where the sensors are and how to install the harness. It has a brand new set of Cummins gauges. Any help is appreciated. I have a video of it running. Will get some pictures of the sensors that are on it tomorrow. Thanks Attachments:You must be logged in to access attached files.

      Started by:  Andrew Piipponen in: Cummins Marine Engines


      11 Replies
      February 14, 2019 at 7:41 pm THIS has until wait until I look very close at a new sender: VDO 805/1/4 Max 120° ( I’m assuming Celsius?) 6-24v Made in Germany 288 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Your current wiring harness–Only YOU can answer that question–It all comes down to your capabilities as to following the Cummins wiring diagram and how good you are at cutting, splicing, etc etc wires as needed that need to work in a damp marine environment and on a boa…

      Last Post by:  Tony Athens posted: 5 days ago

    • 6bta Date Code

      This topic has 8 replies, has 3 voices, and was last updated by Tony Athens 6 days ago

      February 12, 2019 at 8:26 pm I assume this is a date code and serial number? Is it a 2008?? The boats a 2002 so the million dollar question…is it original? Attachments:You must be logged in to access attached files.

      Started by:  Brian Katz in: Cummins Marine Engines


      8 Replies
      February 13, 2019 at 6:11 pm Overall, your aftercooler looks really good, but for sure, it is related to the last water they saw before shut down and then, sitting at the dock for days, weeks & months on end… Use lots of grease during the assembly, and FRESH WATER FLUSH religiously if you are not parking the boat in water that you could use to water your lawn with.. Tony . Tony Athens Seaboard Founder Go here for the latest stuff we put together and share for…

      Last Post by:  Tony Athens posted: 6 days ago

    • Cummins 6CTA 450,8.3,8m 1 2 3

      This topic has 41 replies, has 8 voices, and was last updated by George Samaha 6 days ago

      October 24, 2017 at 4:15 am Morning, need some assistance. 2002, 1000 hours, 5 bladed prop, diameter and pitch unknown. Inter cooler serviced and gear cooler serviced in 2012, at 750 hours, report said seriously corroded, flushing and replacement of antifreeze done 2 years ago. WOT rpm unknown or at least that is what I am being told. Hot end of turbo and pipe and small part of inter cooler discolored light brown from heat, impeller ,oil , filters ,serviced regularly since…

      Started by:  Bill kosky in: Cummins Marine Engines


      41 Replies
      February 13, 2019 at 10:15 am Thank you Rob.

      Last Post by:  George Samaha posted: 6 days ago

    • Adding a helm

      This topic has 4 replies, has 3 voices, and was last updated by donald roth 1 week ago

      February 7, 2019 at 6:54 pm My boat has an old Hynautic steering system, from which the pressure can and relief valves have been removed with positive results—smoother operation with less effort to turn the wheel. I’m now installing a second helm station at the transom, and wondering if I need to run a third line from the new helm back up to the reservoir? This type of helm pump does not have an internal reservoir, and a reservoir tank at the lower helm could not be ve…

      Started by:  donald roth in: General Discussion


      4 Replies
      February 12, 2019 at 10:29 pm Thanks, I’ve been thinking it all through, and have also come to the conclusion that adding a second reservoir would not work, I’ve got to run a third line forward to the reservoir at the high point of the system.

      Last Post by:  donald roth posted: 1 week ago

    • Cummins 6CTA Synchronizer Instructions

      This topic has 1 reply, has 2 voices, and was last updated by Corey Schmidt 1 week ago

      February 12, 2019 at 12:24 pm Hi, I’m looking for the operating instructions for the circa 1997 Cummins 6CTA synchronizer. My shop manual does not discuss and I did not get an owner’s manual when I purchased the boat. Cummins did not have a manual. The installation manual calls it “C Cruise” . I have twin 6CTA-480CE engines with electronic engine controls. Thanks for any help Erik Sea Cottage

      Started by:  Erik Strasel in: Cummins Marine Engines


      1 Reply
      February 12, 2019 at 2:55 pm This is the closest thing I have, probably not exactly what you’re looking for but it’s better than nothing. Corey Schmidt | VP, Operations | Seaboard Marine, Inc. Attachments:You must be logged in to access attached files.

      Last Post by:  Corey Schmidt posted: 1 week ago

Viewing 20 topics - 1 through 20 (of 1,275 total)