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This forum contains 1,427 Topics, 8,576 Replies, and 4,328 Contributing Members.
- Cummins Marine Forum Topics
6BTA Spool Up Issue
February 23, 2019 at 5:54 pm Dear Tony, Carolina Classic 28 with a pair of 6BTA5.9 M3 330HP. Roughly 2200 hours on the engines with no major problems. Cummins did a full service at 2000 hours which included adjusting the values. I generally put about 60-80 hours a year on the engines. I also have your water pumps on for the last three years. I had a strange problem with my starboard engine that happened on my last trip in December, the afternoon before I had to haul and wi…23 RepliesApril 24, 2019 at 3:36 pm All, Just back from an expected 3 week trip to Afghanistan. The boat is now in the water. Still working on the turbo exhaust bolts. Got one bolt off so far. Hopefully another period coated in PB Blaster will loosen the other ones. In the mean time, new after cooler core and new gear cooler installed. New water pipe below turbo (between gear cooler and heat exchanger) installed. Only problem, this engine (starboard) won’t start, whi…
April 24, 2019 at 3:22 pm Hello, new member with a question about choosing a reduction ratio for a zf 220a for a cummins 6bt. My son and I are repowering a 66’ webber cove 34’ lobster boat that weighs about 16k lbs. She cracked a head on the old volvo penta tamd40 and we pulled it and junked it. We took our time and built a 6bt, with mild p-pump changes. mild 6bt, no aftercooler, 230/240hp engine. The 220a down angle matches perfectly to our 10 degree shaft …0 Replies - Can you Help? ...be the First to Respond!
Cummins QSM 11 Smartcraft fault 422 coolant level sensor
April 24, 2019 at 8:32 am I have a 2011 searay sedan bridge with QSM11s. I am getting a fault code 422 sensor coolant level. Looks like this is a Cummins ECM code and not a smartcraft code. Do these motors have coolant level sensors? If so where is it located? If there are no coolant level sensor then how do I clear this code? Can it be done through smartcraft or does it need to be done through Cummins ECM? Thanks for your time. Jeremy Gavin Attachments:You mus…0 Replies - Can you Help? ...be the First to Respond!
QSB 6.7 Heat exchanger corrosion
April 19, 2019 at 5:19 am At 2000 hour service heat exchanger badly corroded. Radiator shop supporting large diesel shop could not get core out. Have owned boat for 2 years. Zincs in heat exchanger have shown little wear during that time. Corrosion and little zinc wear seem inconsistent. Thanks to previous advice from Seaboard, I learned the QSB 6.7 after cooler had plastic caps. (Discovered when unable to remove zincs.) When changing out plastic after cooler cap…3 RepliesApril 24, 2019 at 8:13 am I have the same issue. Poor design. My zincs look almost new- bad. Looking for a solution too.
Seaboard Marine parts received
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.2 RepliesApril 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.
April 19, 2019 at 12:08 am G’day Out cruising today and smelt a weird smell on my Cummins 6BTA 5.9, had closer look and it was coming from the alternator. Took a temp reading and it was 109c the port was 87c………. Any ideas or am I in for a new alternator Thanks10 RepliesApril 24, 2019 at 3:52 am Pierre, DVM = digital voltage meters. Here’s the article I was referencing. Looks like you have a nice setup. Just need to be 100% aware as to how it works, how’s it’s wired in and what it can (and cannot tell you). https://www.sbmar.com/articles/installing-digital-volt-meters-dvm-boat/ How about some more pics and info on the boat …. it looks like a beauty. Rob "Luck is the residue of good design."
Envirovent install- help
April 20, 2019 at 3:55 pm Hi guys, 6bta Cummins, i am installing Envirovent to stop my air breathers from puking oil… see the amount of oil that poured out upon removing air filter. Not sure how these engines were breathing. The walker sep had a small oil line On the very back, i believe it is an oil line draining back into the oil pan through a small filter. This kit came with no instructions. Just parts, I never like to see that but it seems pretty self expla…9 RepliesApril 23, 2019 at 7:45 pm Brad Fausett wrote: The walker sep had a small oil line On the very back, i believe it is an oil line draining back into the oil pan through a small filter. This kit came with no instructions. Just parts, I never like to see that but it seems pretty self explanatory. What am I doing with this line?? Kit has a cap for factory breather tube I believe. Help?? I just did an install on my 6bta. The back drain tube from the walkers needs plugged. …
April 23, 2019 at 5:43 pm Have a 2006 QSL9 with 5000 Engine Hours. I Cruise from 1020 RPM (8.5 MPH) to 1350 RPM (10.0 MPH). Change Oil every 200 Hours. Shell Rotella 15/40. 2006 40 Foot Sedan Trawler!!!. What maintenance should i be having done at this stage of the game. Getting ready to service the After Cooler for the 2nd time. Valves were adjusted at 2000 hours.1 ReplyApril 23, 2019 at 6:50 pm Here is the long term key, based on what you just posted——————-As long as you do the aftercooler per my protocol every 2 yrs( hours do not matter if you are in saltwater) , your exhaust system does not let water into your turbo, and you keep the rest the the cooling system up to spec along with all of the rotating devices on the front of the engine, expect 25000-30000++++++++ hours before you will be looking …
NMEA 2000 gateway to Diesel View
April 20, 2019 at 6:47 am I want to say what a fantastic forum. It is so refreshing to find this! I have a 2006 48 SeaRay Sundancer with twin cummins QSC 8.3 (ESN 46529161 and ESN 46529055). My Diesel view controller head is part number 4932604 and I have rev 5 Sims on both engines. All my Smart-Craft stuff (analog dashboard gauges, engine sync switch, etc. works just fine. However, my diesel view display is starting to fade and appears to be hading south as they seem…3 RepliesApril 23, 2019 at 9:04 am Yes the 8M0105243 is the correct part for your application and should work… best bet is to get Mercury support on the line as lately they have been very good with support (thankfully): Mercury Marine/Customer service 1 (920) 929-5040 Corey Schmidt | VP, Operations | Seaboard Marine, Inc.
Hour counter counting backwards QSB 5.9 – 480
April 23, 2019 at 6:46 am Hi there We have a pair of QSB 5.9 – 480’s in one of our boats, where the port engine is having some issues. Engines have done less than 500 hours, but hour counter on port engine is living its own life. Actual engine hours is approx 480, but SC1000 rev instrument is showing hours that vary uppwards and downwards from 280 hours. (i.e. running hours figure both increases and decreases…) Also, there are some synchronisation issue…0 Replies - Can you Help? ...be the First to Respond!
Newbie Alert-Cummins SMX sensor info needed!!
April 16, 2019 at 8:24 am Guys, (this is my first diesel boat so sorry for the dumb questions)I have a Cummins 5.9 6BTA5.9 and just added the SMX digital gauges. I am trying to figure out what sensors I need and their placement on the motor. I bought the kit but just seeing if I should add anything else. 1st pic there is one sensor there and one next to it with nothing hooked up 2nd pic at the top there is 2 brass fitting coming out with nothing hooked up 3rd pic is the…6 RepliesApril 22, 2019 at 5:07 pm I really want to help, but you need to be way better picture wise…………Take better pictures, hold the camera steady and level, and hold it in a position so I can’t see what there in to see. I cannot see around a corner. Send them to me direct.. firstname.lastname@example.org .But, from the little I can “see” your engine will have to be rewired–I see at least two things that are “boat builder mods” and…
Prop speed, worth doing?
March 1, 2019 at 12:30 pm Thinking of trying some new ACME props and wondering while I’m at it if I should put prop speed on the running gear. Has anyone had experience with this product?20 RepliesApril 22, 2019 at 1:31 pm I think on the west coast and the way most yards price the applying of prop speed its not worth it. To me more usage I would tend to not put it on. Nice boat btw. Have you had that boat a while? One that I worked went down there a few years ago and sold recently. Same engines and boat.
Quick Question on HX End Caps and Gaskets
April 22, 2019 at 6:49 am Getting ready to replace a leaking end cap and gasket on 6BTA heat exchanger. I’m using the Seaboard caps and gaskets. My question is whether any material or not should be applied to edge of HX tube, gaskets, or cap. After an exhausting search on this site, came up with several responses. 1. Nothing, Seaboard gasket is soft enough. 2. A little bit of grease on gasket edges. 3. Rectoseal on gasket edges. 4. Light coat of RTV …2 RepliesApril 22, 2019 at 8:21 am A little Rector Seal 5 is always good. Rob "Luck is the residue of good design." Attachments:You must be logged in to access attached files.
New boat, new to diesels
April 17, 2019 at 12:16 pm Hi all, I’ve put in an offer on a new boat and am getting ready to see it for the first time. Coming from a freshwater cooled Mercruiser outdrive setup, the transition to a straight shaft diesel is quite a change. I’ve been doing some research but still feel very much the newbie. What kinds of things should I look for upon my initial viewing of the boat? Assuming all goes well, what kinds of things are important that I should do re…2 RepliesApril 22, 2019 at 7:37 am Rob Schepis wrote: Good for you to find a boat in freshwater, that is a premium, especially in a situation where maintenance might not have been up to high standards. Up the Hudson I presume? Single screw, right? Be sure to take a lot of engine room pic, some close ups and some overall shots. Be sure not to miss the biggies – engine mounts, seawater pump, aftercooler, turbo, exhaust coming off the turbo, digital display, to name a few… Get …
April 17, 2019 at 11:00 am Hello All, I would like to start performing my own oil changes. I am at the 75 hour mark since the last change. Engines: Cummins 6BTA 5.9 330hp @ 2800 Hours: 1,051 for each engine I have been trying to identify a step by step process for the oil change protocol, but have not had any luck. For example, what hardware are you using to extract the oil? I have located various oil change kits on West Marine and Amazon etc…, but I wanted to s…17 RepliesApril 21, 2019 at 3:27 pm Hi Paul, Thank you for the reply and suggestions. Appreciated… John
SMX filters versus Racors
April 19, 2019 at 5:53 pm New boat to us. 970 CPL, 300 hp engines with some updates. Changing all the filters etc. Noted Racor 900s had water in them. One 300 gal. Tank. One filler station. Don’t like messing with the Racors. Changed from them on previous boat with the SMX double doubles and squeeze bulb primers. Still have 4 of the 1000 filters and 3 of the 19513 filters. Is there a shelf life for them? Probably 4 years old stored in a humidity controlled room. …4 RepliesApril 21, 2019 at 10:05 am Tony, great reply, gives me more things to look at. I also like your double double filter system since I had them on my previous boat. But at age 85 the agreement with my son-in-law is “I’ll buy the next boat but you have to maintain it”, My mistake was not letting him work with the Racors this time and I think that would have sealed the deal. Still have three Racors left that came with the boat, and will let him do them next t…
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 you0 Replies - Can you Help? ...be the First to Respond!
Aftercooler bundle condition
April 20, 2019 at 3:40 pm Hi; just pulled my stbd AC to make them the sbmar way. Coolers came apart with between minimal and some effort. Not much grease that I could tell…..but they came out ok. Been through most of the cleaning steps so far and just wondering about 2 things at this point…. A) this slight pitting on the bundle? Normal? Concern? Sand some more? B) just sand and grease the housing where the black paint is missing on the inside? Thanks!!…2 RepliesApril 20, 2019 at 4:11 pm I found similar pictures (after I posted of course) and read the same. You also said in that thread lube it up and put it together and it’s fine, so I’ll go with that upon successful pressure testing.
Fuel cooler article
April 19, 2019 at 3:25 pm Great fuel cooler removal article Brendan! https://www.sbmar.com/articles/understanding-marine-fuel-coolers/?mc_cid=b9945a9cb7&mc_eid=82c3806597 I have that massive QSM cooler which means it’s almost impossible to change the impeller. I’d love to remove it for both simplicities sake as well as adding the ability to change the impeller in an emergency. How would I go about analyzing whether I can or cannot remove the cooler? In simple …0 Replies - Can you Help? ...be the First to Respond!
'03 6CTA 480ce vs '06 QSC 540, which preferred
April 19, 2019 at 5:17 am First, love the forum and thanks to everyone who participates. Such great reads and info. Looking at two boats, one with a 2003 480 550 hours and the other with a 2006 QSC with about 1,000 hrs. Both seem to have been maintained evenly and are clean. I know about the 480’s 23 gph rule at 2,200 RPM and the turbo and aftercooler don’t show the extreme discoloration you can see in some pics on this site. Don’t know much about the…2 RepliesApril 19, 2019 at 3:23 pm Thank you Rob… No pics, sorry. Both motors are generally clean and appear in good cond. The QSC is all orig. The 6CTA had the exhaust redone, adding a hump in it to prevent water ingestion and looks quite well done. J
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