Welcome to the Cummins Marine Community
At Seaboard Marine, we live and breathe Cummins Marine Diesel... the community forum is a place where you can share your experiences, ask questions about your Cummins Marine engines & products, and interact with others in the boating community for FREE. Please note that you must be registered on www.sbmar.com in order to create topics in the community forum.
Welcome, Guest! Please Register if you would like to create topics in the community forum.
This forum contains 5,559 Topics, 26,302 Replies, and 15,922 Contributing Members.
-
- Cummins Marine Forum Topics
-
-
480 CE(2003) Smartcraft Engine load data
This topic has 0 replies, has 1 voices, and was last updated by 1 hour ago
April 21, 2025 at 7:29 am Vessel view 4 is presently installed on my 2003 Searay 450 Express with Cummins 480 CE engines. I get limited data thru the Smart Craft, but do notice there are menus for Air temp an engine load %. But there are no readings in those modes. I’m curious if that is because I’m lacking a sensor such as air temperature which would be required to make the engine load % calculation’s? I saw on your site you have the Cummins Mercury 39…
Started by:
in: Cummins Marine Engines
0 Replies - Can you Help? ...be the First to Respond!
-
Is the condition of the turbos concerning?
This topic has 1 reply, has 2 voices, and was last updated by
5 hours ago April 20, 2025 at 9:07 am I’m in the process of purchasing a 2005 420 Sundancer with the Cummins 6cta engines and am looking for some input on the turbos. I understand discoloration from the heat is normal but I’ve never seen it to the point there is no paint left. Should I be concerned? Have these motors been ran hard? I’m told this boat has been freshwater its entire life. Thank you
Started by:
in: Cummins Marine Engines
1 ReplyApril 21, 2025 at 3:49 am LW, We do not see pictures. Which brokerage is listing the boat? Pictures or a listing might help us make a more informed assessment. Steve Lewis 2007 Kadey Krogen 44 WidebodyLast Post by:
posted: 5 hours ago
-
Recommended engine rebuilder
This topic has 0 replies, has 1 voices, and was last updated by 1 day ago
April 20, 2025 at 8:39 am Is there a Cummins Marine Engine rebuilder in Southern California that anyone can strongly recommend? I have an older 6BT with 2 damaged cylinders that needs rebuilding. Otherwise I am open to a factory rebuilt unit if those are available. Who to contact for that? GT
Started by:
in: Cummins Marine Engines
0 Replies - Can you Help? ...be the First to Respond!
-
8D replacement with group 24
This topic has 4 replies, has 4 voices, and was last updated by
1 day ago February 24, 2025 at 2:39 pm I have QSC8.3 540hp engines. Currently the boat has one 8D battery per engine. Can I replace each of the 8D’s with three group 24’s? The combined cold cranking amps of three group 24’s wired in parallel is 1575 cca’s. reserve capacity of the combined 24’s is 405 vs 440 of one 8D, and the amp hours is 405 vs 440. My main goal is to not deal with one beast of a battery at 160lbs average vs 55lbs per group 24. To lift …
Started by:
in: Cummins Marine Engines
4 RepliesApril 20, 2025 at 7:21 am My 8D batteries were replaced with Braille B7548 AGMs on QSC 500s. These engines fire up without a problem. Both batteries fit in one 8D battery box.Last Post by:
posted: 1 day ago
-
QSM11 won’t crank when cold
This topic has 2 replies, has 2 voices, and was last updated by
1 day ago
April 13, 2025 at 8:28 am Hi there. Have QSM11 engines with 630 hours in a 2006 Meridian 580. Recently started having trouble starting the starboard engine when it is rock solid cold. I turn the key and the engine goes through the usual power on tests. No error lights and the Vesselview shows all is well. But when I push the Start button, nothing happens. Heres the strange thing… if I wait about 5 minutes, the engine fires right up. Once the engine is running, I can shut…
Started by:
in: Cummins Marine Engines
2 RepliesApril 19, 2025 at 10:14 am Tony – thanks for the reply. It encouraged me to think more analog and less digital. I checked out the wiring under the key panel and it all checked out. Then I read your tip on the magnetic starter relay. I was able to see 24v on the small wires when the start button was pushed. However, it did not translate into 24v at the solenoid switch terminal. I pounded on the relay a few times with my portable vhf radio and, voila, the engine fired…Last Post by:
-
Grid Heaters 6CTA,cpl2172
This topic has 8 replies, has 4 voices, and was last updated by
2 days ago March 19, 2025 at 10:45 am I was wondering if the grid heaters ever fall apart and ingest into the combustion area, I live in Seattle and never use them, there is a switch to turn off and on. Is it advised to remove completely or not to worry? toolman,38 tiara,450 diamonds
Started by:
in: Cummins Marine Engines
8 RepliesApril 18, 2025 at 7:41 pm 100% if you want————–I am sure you can figure it out FYI–The heater grid itseft is made fom Ni-CHROME — no corossion, ever. Seaboard Founder & PresidentLast Post by:
posted: 2 days ago
-
Modified turbo output and charge pipe
This topic has 3 replies, has 2 voices, and was last updated by
2 days ago April 17, 2025 at 4:18 pm I am trying to shorten the length of my 2015 year QSB 5.9 to fit under the doghouse. The OEM turbo charge pipe extends out a few inches and I would like to change the angle of the turbo output to shorten the overall length which would require changing the charge pipe from turbo to intercooler. Is there a shorter charge pipe available that would fit a modified turbo angle?
Started by:
in: Cummins Marine Engines
3 RepliesApril 18, 2025 at 7:28 pm Obvoiusly, the opion in my attachnent is what you need. Seaboard Founder & PresidentLast Post by:
posted: 2 days ago
-
ZF280A Neutral safety Switch
This topic has 0 replies, has 1 voices, and was last updated by 4 days ago
April 17, 2025 at 1:47 am Alright so last year my neutral safety switch failed (plastic disintegrated and cracked apart) I got a new switch, but upon removing the NSW, I couldn’t catch the balls and springs that came out. i got a repair kit, with spare balls and springs, but upon reinstalling, it’s not activating the switch. I’ve had it bypassed but now trying to figure out how to properly assemble it Is it ball spring ball? Am I missing a bushing?only one ball? I h…
Started by:
in: Marine Transmissions
0 Replies - Can you Help? ...be the First to Respond!
-
New QSM 11/Vessel view 403 /fuel totalizer
This topic has 4 replies, has 3 voices, and was last updated by
5 days ago
April 14, 2025 at 1:30 pm I re-powered with another reman QSM 11 this winter. Like it or not it came with vessel view 4.03, which is a step down from vessel view 4.0, which is a huge step down from the original Cummins display unit, circa 2005.. I hate it already, have pretty much all the data I need via Nema 2000 to my MFD. The one thing I need out of this stupid screen is the total fuel used since reset. I’ve run the boat 5 times, the first three times were …
Started by:
in: Cummins Marine Engines
4 RepliesApril 15, 2025 at 10:47 am SN 6044 2175 i did find a place buried in the settings ( system/network/data sources/engine/center/fuel used trip that has it. its amazing how someone can sell you an 80K engine in 2024 and pretend this is monitoring solution…Last Post by:
-
J39 Error – Gone – Then Welcome To Diesel Calibration???
This topic has 3 replies, has 3 voices, and was last updated by
6 days ago April 13, 2025 at 5:28 pm Thanks in advance. This is interesting (to me at least). Stuck and not sure what to do. 2005 Twin QSC. SV V3.42a DieselView V1.45 Summer launch after winter layup – Turn ignition on both motors. Port – J39 error with no data showing up / Stbd is fine. Both engines run fine. Swap SIMs between motors…J39 error travels with SIM…i.e. now Stbd engine has J39 error. Port OK. Good sign I guess. To try to fix it I disco…
Started by:
in: Cummins Marine Engines
3 RepliesApril 15, 2025 at 8:33 am Disconnect EVERYTHING…. then start over completely. Just know that you’re now in the SmartCraft vortex and you will chase your tail in hopes to get lucky. Corey Schmidt | VP, Operations | Seaboard Marine, Inc.Last Post by:
posted: 6 days ago
-
QSC Fuel Cooler Fuel Line
This topic has 1 reply, has 2 voices, and was last updated by
1 week ago April 12, 2025 at 6:26 pm I’m doing the aftercooler service on a QSC and the forward fuel line flare fitting on the fuel cooler is badly corroded. Trying to get the fuel line disconnected the hose side fitting stripped even though I was using a flare nut wrench to hold it. This fuel line seems to run behind the ECM and I’m not sure what’s involved if it needs to be replaced. I don’t want to cut the fuel line if I can avoid it. Apologies for the pi…
Started by:
in: Cummins Marine Engines
1 ReplyApril 13, 2025 at 7:06 am Stand back 2 ft or more and post a picture so we can see it all Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
450C started knocking with gray exhaust smoke.
This topic has 1 reply, has 2 voices, and was last updated by
1 week ago April 9, 2025 at 1:20 pm Went to run the boat and port motor is knocking with a light gray exhaust smoke. 2002 6CTA. Tried to upload a video then a pic but my iPhone file was too big. Where do I start? Any advice would be appreciated. john 2002 410 Express Cruiser 6CTA-m3 8.3 450 Diamonds
Started by:
in: Cummins Marine Engines
1 ReplyApril 12, 2025 at 4:23 pm Knocking is never good .. Grey smoke makes it worse. Post good post pics of all and the history of the engine Send you video to me direct–shorten it on u-tube if you have to tony@sbmar.com Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
Where to check for seaweed blockage on 6BTA
This topic has 2 replies, has 3 voices, and was last updated by
1 week ago April 9, 2025 at 7:41 am Was running a 6bt 210 and even though I have a sea strainer I would check the transmission cooler every month and clear out stuff that got by the strainer. The trans cooler was the first stop past raw water pump. I now have a 6BTA 315 it has a fuel cooler past the raw water pump but has a pretty wide opening in it. The next stop is the after cooler eventually it goes through a transmission cooler. Is there any spot in the raw water path I should…
Started by:
in: Cummins Marine Engines
2 RepliesApril 12, 2025 at 6:28 am Bottom of the aftercooler Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
Run QSB without Instrumentation
This topic has 3 replies, has 2 voices, and was last updated by
1 week ago April 9, 2025 at 2:58 pm I have a 2005 Tiara 3600 Open with Cummins QSB 5.9 engines. I am in the middle of a total instrumentation upgrade but need to take the boat approximately 3 miles to a yard and back for some quick fiberglass repairs. I know there is a risk but will the engines operate with all of the instrumentation removed including both Diesel Views, voltage gauges and fuel gauge? I started them up in the slip yesterday and all seemed well. Thanks for any th…
Started by:
in: Cummins Marine Engines
3 RepliesApril 12, 2025 at 6:18 am Same regs in S. Calif……….send me your email offline–I’ll send you some neat pics ref: “yelloweye” tony@sbmar.com Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
Cummins 6BTA 5.9 370HP
This topic has 6 replies, has 4 voices, and was last updated by
1 week ago April 8, 2025 at 4:27 pm Good day everyone, I have a friend who just purchased a 2004 Meridian 411 with Cummins 6BTA 370 Hp. Engines Has about 1000 hours on it and he is concerned about the engine upon cold start up smoking on both Port and starboard side. After a sea trial and warming it up The starboard side seemed to still smoke a little , where the Port still had a bit more coming out of it. At cruising rpm it wasn’t very noticeable and at WOT it was cleared…
Started by:
in: Cummins Marine Engines
6 RepliesApril 10, 2025 at 12:15 pm What is white smoke? Here is some good reading about smoke color and possible causes. Steve Lewis 2007 Kadey Krogen 44 WidebodyLast Post by:
posted: 1 week ago
-
1999 6CTA Aftercooler, stripped cap threads
This topic has 2 replies, has 2 voices, and was last updated by
1 week ago
April 6, 2025 at 6:17 am Hi All, I pulled my aftercoolers to do the bench maintenance per Tony’s protocol. When reassembling one of the aftercoolers, the bolt on the bottom cap inner side stripped. Bolt is fine, threads are the issue. What are your thoughts on how to repair? Thanks Larry
Started by:
in: Cummins Marine Engines
2 RepliesApril 9, 2025 at 10:41 am David, Thanks for the advice. I got the kit and did the work today. It worked great just like you said. All is fixed and tested well. I appreciate the comments. Thanks LarryLast Post by:
-
muffler replacement
This topic has 1 reply, has 2 voices, and was last updated by
1 week ago April 7, 2025 at 4:01 pm It’s time to replace the muffler on my 1986 6MBT 210 hp boat. Attached is pic. Looks straight forward to me. Any tips or things I should be aware of? Jean
Started by:
in: Cummins Marine Engines
1 ReplyApril 8, 2025 at 6:03 pm I would guess you can something of those general dimensions on GOGGLE? If you want me to help, I’d need a simple sketch all the dimensions. Usually this engine would use a 4″ to 5″ ID in and out sized hose Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
fleetguard cc2825 any other brands work?
This topic has 1 reply, has 2 voices, and was last updated by
1 week ago April 6, 2025 at 6:15 pm Hey everyone, Fleetguard’s blue coolant. CC2825. Are there any other brands of blue coolant that would be compatible? Example: Napa Blue Heavy Duty SCA precharged cooling system antifreeze? Where I live no one sells fleetguard anything. I have to always order it. I’m wondering if there was an incident where I needed coolant now. Would this be acceptable or what would be acceptable long term use without using the fleetguard brand name…
Started by:
in: Cummins Marine Engines
1 ReplyApril 8, 2025 at 3:22 pm Any brand name ethylene gylcol based antifreeze is perfect mixed 50-50 in freezing areas with distilled water or an equal. In warm areas, 60% water is even better. Seaboard Founder & PresidentLast Post by:
posted: 1 week ago
-
6BT5.9-M marine
This topic has 0 replies, has 1 voices, and was last updated by 1 week ago
April 8, 2025 at 9:01 am Was the notorious block #53 used in marine engines?
Started by:
in: Cummins Marine Engines
0 Replies - Can you Help? ...be the First to Respond!
-
Blue smoke. Turbos? Something more, or nothing?
This topic has 0 replies, has 1 voices, and was last updated by 1 week ago
April 7, 2025 at 9:41 am New Risers, look great thanks Justin and team. After coolers serviced, new gear coolers, HX serviced, new water pumps, new envirovent Sbmar install. Coolers all pressure tested. All fluids and filters changed. Heater Grid not working on one engine. Wolverine mats soon to come. I doubt this is issue. Lots of blue smoke on start ambient outdoor temps in 50’s After warmed up and WOT and hour cruise there is still light blue smoke. At th…
Started by:
in: General Discussion
0 Replies - Can you Help? ...be the First to Respond!
-
480 CE(2003) Smartcraft Engine load data
