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- Cummins Marine Forum Topics
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Heat Exchanger Cleaning on Seakeeper Gyro
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago January 24, 2023 at 1:20 pm My QSB coolers go to a radiator shop for pressure testing and cleaning, so I had always wondered how my heat exchanger for the Seakeeper Gyro heat exchanger was doing. I ended up buying a second heat exchanger that I put on, and will swap it out with the original every few years. Overall, the tubes looked good, no blockage. I am going to cut new end cap gaskets and clean this one up. So my question, what would you suggest to clean the internals …
1 ReplyJanuary 24, 2023 at 7:58 pm Commonly available Pool acid (HCL) mixed 10:1 with water is what we have using for over 3 decades..Ttotally safe, easy to get, cheap, and 100% safeLast Post by:
posted: 1 year ago
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Fuel Control Actuator replacement QSB5.9
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago January 19, 2023 at 8:52 pm I was replacing the impeller on my seaboard water pumps (QSB5.9) and bumped the plastic connector for the Fuel Control Actuator and broke it off. Is that an easy swap or is there high fuel pressure behind it? Thanks Matt
1 ReplyJanuary 20, 2023 at 7:07 am Easy swap–No pressure except when running– under 100 PSILast Post by:
posted: 1 year ago
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Bilge drain
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago January 17, 2023 at 4:11 pm Could I get your advice to deal with bilge water in a 25 Farallon straight shaft. Any of your products or technical solutions? Would a thru-hull (the flange type with threaded collar nut and threaded plug) garboard drain work if installed close to keel between rudder base and strut? Considering the prop turbulence, but this is the low area. Trailer boat that I would like to be able to more easily wash out the bilge when pulled out. Current gar…
1 ReplyJanuary 17, 2023 at 6:23 pm The factory hatches and general deck design on a 25 Farallon is as bad as it gets as to letting water into the bilge in normal working conditions.. Because you trailer your boat, consider doing what most smaller outboard powered boats do. Put a rubber expansion plug/kit behind the rudder post thru the transom.. I have 3 of these on my Carolina skiff.. IMO simple and perfectly safe. Installing a bronze thru hull with a threaded plug might be mor…Last Post by:
posted: 1 year ago
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Boost/EGT Gauges
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago
January 11, 2023 at 10:05 am I run a pair of 370 Yanmars in a 36′ express. I’m interested in adding boost/temp gauges but don’t have a lot of room on the panel. Does anyone know of a 52mm dual gauge?
1 ReplyJanuary 15, 2023 at 4:17 pm 52 mm or 2.o5″ are available for single guages at a time but I have not seen a dual guage. Isspro make a dual guage bit it is approx 3.375″ diam. It is called a Turbocator. Can you mount them in a bracket atop the panel rather than in the panel?Last Post by:
posted: 1 year ago
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QSB4.5 Farallon 25’
This topic has 7 replies, has 2 voices, and was last updated by
1 year ago December 7, 2022 at 6:07 pm Would the B4.5 work as a close coupled v-drive or does it need to be remote like the old 3.9-4bt due to vibration? gas straight shaft to v-drive. considering the 230 or 250hp versions for Farallon 25. With close coupled on a ZF63IV 1.5 ratio, 19”-4B prop, integral tanks and HD running gear (1.75” shafting and a real rudder). goals: shorter engine (vs 6cyl) gives more internal space along with the integral tanks. Electronic engine less exhaust sm…
7 RepliesJanuary 13, 2023 at 5:47 pm All the RECON 5.9’s are the same price up to the 380 (all same exact engine–just an ECM calibration) .. So if you want a 5.9, go with the 380 and prop it LIGHT.. The added rpm to make 300 HP will make the boat noticeably slower in the harbor and be easier on the gear unless you are into shot-gun starts. Depending on a few things, the cost will be similar by the time the dust settles. For the wife: EPA T3 engines are “cleaner&#…Last Post by:
posted: 1 year ago
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Black smoke low power Cummins 6BTA-M2
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago January 9, 2023 at 10:13 am I have 2 Cummins 6BTA-M2’S in a Searay 370DB, I seem to be getting black smoke out the back of the boat when trying to plane, and seem to be not getting full RPM? I am getting a high vacuum on Starboard engine but have new fuel filters . Looking like someone has changed fuel lines and they don’t seem to be big enough? 3/8 fuel line but seems to be returning fuel to port tank instead of Starboard tank where it should be going. g…
1 ReplyJanuary 9, 2023 at 3:37 pm Dark smoke and fuel restrictions do not coincide. You may very well have multiple things needing attention. Have you read the Low Power Troubleshooting article in Tony’s Tips?Last Post by:
posted: 1 year ago
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RPM – 9999
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago January 1, 2023 at 6:12 am Greetings, happy 2023 I have the 370 6BTA engines. Down stairs I have mechanical gauges for the motors but up stairs I have mechanical gauges with a digital RPM display The digital display shows 9999 on the screen when I’m running. It sometimes changes but is completely inaccurate 100% of the time. Any ideas? Thanks.
2 RepliesJanuary 6, 2023 at 6:20 am Were they ever right?Last Post by:
posted: 1 year ago
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370 6BTA – breather tube
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago January 1, 2023 at 6:46 am Greetings, Just in front of the aft cooler on the 6BTA, there is a small metal tube that comes off the left side of the engine. I assume this is a breather tube of some sort. I have some smoke coming out this tube, not a lot but it is noticeable. Is this normal? Should there be something attached to the tube? Thanks, Darryll
1 ReplyJanuary 3, 2023 at 5:18 pm Best to post a picture or two of what you are describing.Last Post by:
posted: 1 year ago
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Stern Tube – OD
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago
January 1, 2023 at 6:41 am Do you know what the OD of the stern tube on a 1979 Bertram 35?
2 RepliesJanuary 1, 2023 at 8:07 pm If it’s got the original engines and running gear, you can probably get your question answered on the Bertram owners forum. Many changes may have taken place since 1979! There’s nothing like an actual mechanical measurement to replicate the exact part you need.Last Post by:
posted: 1 year ago
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Triple QSB 5.9 480 VV 1.5 to NMEA 2000
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago December 24, 2022 at 2:05 pm Hello, My wife and purchased a 2009 48 Fountain Express Cruiser this year and we are doing some electronics upgrades this winter that include two Garmin 1243’s that I would like to send engine data to. My question is what do I need to purchase to make this connection. One concern that I have is that it is set up with three Vesselview V1.5 screens and three six port j-box’s and Glendinning controls, I am not sure if data from all thre…
2 RepliesDecember 31, 2022 at 4:44 pm Just found their US website: https://yachtdevicesus.com/Last Post by:
posted: 1 year ago
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Season’s Greetings
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago December 23, 2022 at 6:43 am Happy Holidays and Merry Christmas to the Forum. I hope everyone gets to spend time with family and friends and for those that are in the right places, some time out on the water. Up north it is very cold, windy and we are getting snow. It will be a White Christmas! Wishing you all a safe and happy holiday season. Cheers!
1 ReplyDecember 23, 2022 at 1:54 pm Best to you too Steve and thanks for all of your excellent contributions here. Be safe and stay warm!Last Post by:
posted: 1 year ago
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Import ? IMO Tier II, EU stage IIIA engine
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago December 21, 2022 at 9:16 am I am looking at a boat in the Med that has twin Scania DI09 diesel engines. From an emissions standpoint, these are rated IMO Tier II, EU stage IIIA. Can this boat be imported to the US? or a visit the US? I read a lot about IMO Tier II and Tier III … but there are so many qualifiers/conditions/exceptions/nuances, it’s very hard to get a clear understanding. https://www.scania.com/content/dam/scanianoe/market/master/products-and-s…
1 ReplyDecember 22, 2022 at 6:32 pm IMO T2 is very close to ETA T3 and I pretty certain that a “visit” would pose NO ISSUE. As to trying to register the boat in a given state after purchase, I am also fairly certain this is on a state by state basis,,.. You would probably have to get a company that specializes in that to get you current. I live in Calif and the rules are changing as I write.Last Post by:
posted: 1 year ago
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Dehumidifier for the engine bay
This topic has 11 replies, has 8 voices, and was last updated by
1 year ago December 9, 2022 at 3:48 pm Hi All, I’m planing to install a permanent marine grade desiccant dehumidifier in the engine bay to reduce moisture and corrosion. It will run 24/7. Do you have any expirience on this? Is this a good idea? any dowsides? Many thanks in advance. <h1> </h1>
11 RepliesDecember 22, 2022 at 12:02 pm Be sure the unit does not put out ozone, I know some have an ion feature that does. I was told that ozone can cause issues with rubber hoses and gaskets breaking down prematurely.Last Post by:
posted: 1 year ago
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Underloaded engines on old trawlers?
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago
November 3, 2022 at 10:35 am I am usually pretty good searching forums for answers, but I have not been able to find a clear and complete basic answer to this question. What is the benefit of, and how does one operate a full (or even semi) displacement trawler efficiently, that has 2 engines each having as much horsepower as the single engine version of the same boat? For example: Marine Trader 38′ with power choices of single 135 or even 120 hp Lehman vs same model…
2 RepliesDecember 19, 2022 at 10:03 am It’s not just the engines but how it’s geared an how it’s propped. The 5.9’s may be more hp but they may be propped to run at the correct rpm.Last Post by:
posted: 1 year ago
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Fuel Filter Setup
This topic has 3 replies, has 2 voices, and was last updated by
1 year ago December 10, 2022 at 9:23 am Just making sure my fuel filtration setup is correct for my engine. I have a 6BT 210 reman purchased from Seaboard Marine 3 years ago to repower my single screw trawler. Fuel tanks were replaced as part of the repower. I have Tony’s SMX Double Double Filtration Kit with vacuum gauges. I’m using a FS19513 for the first stage and a FS19596 with the WIF sensor connected to the engine instrument alarm panel as the second stage filtratio…
3 RepliesDecember 16, 2022 at 7:07 am Have you “tested” it by removing the WIF sensor and dipping it in some water? When we designed the circuity for the board, my tests were not 100% conclusive using a RACOR sensor, but seemed good for a Fleetguard Sensor you have.. Keep me posted. IMO, long term actual field testing is always a better way to see a how things like this work.Last Post by:
posted: 1 year ago
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Fuel System Long Term Layup for a 4-53 Detroit Diesel
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
December 13, 2022 at 1:07 am Hi Guys, I have a 4-53 Detroit Diesel that I plan on laying up for many years coming up. Any suggestions on how to store the fuel system for long term storage? Any suggestions would be greatly appreciated. Thanks, Pat
2 RepliesDecember 15, 2022 at 5:18 am Thanks for the information Tony. Have you ever heard of replacing the diesel fuel in the engine with fuel injector calibration fluid for long term storage? I plan on laying this engine up for five or more years. Thanks again, PatLast Post by:
posted: 1 year ago
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Head gasket replacement 6CTA M2 CPL 1929
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago
December 4, 2022 at 5:18 pm Hello, Question for the forum. What is the advice on replacing vs. re-conditioning the cylinder heads on an older 6CTA8.3 M2 (CPL 1929) ? S/N 45034714 and 45035203 (1960 hours) 1995 vintage. There is some stain on the rear of the engine that gets damp at WOT (2700), below 2300, stays dry. Most cruising is done at hull speed. Once the heads are off, is it recommended to replace the heads? Or, can these be safely re-used if they are in good condit…
2 RepliesDecember 6, 2022 at 9:28 am Thanks. I am planning on also replacing or rebuilding the heads, not just the gaskets. What I am trying to understand is the difference between having the 27 year old heads rebuilt at a local shop and buying new heads from Cummins. Can a shop do a good job at a rebuild or should I go with new from Cummins? The aftercoolers done six months ago according to your procedure, one core replaced. Also replaced the transmission coolers proactively. Than…Last Post by:
posted: 1 year ago
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Block heater pad. Thermostat or not?
This topic has 3 replies, has 4 voices, and was last updated by
1 year ago
November 29, 2022 at 6:50 pm Installing 500w block heater pad on my QSM11s. Do I opt for the standard pad or the ones with the thermostat? Says on at 170 and off at 200 or just go with the constant on model?
3 RepliesDecember 4, 2022 at 3:08 pm Mount a line voltage thermostat with an outlet on it in the ER and power the heaters through that.Last Post by:
posted: 1 year ago
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Racor to double double upgrade WIF sensor
This topic has 2 replies, has 2 voices, and was last updated by
1 year ago November 15, 2022 at 3:51 pm I’m planning on upgrading my undersized Racor 500 series fuel filters to the double double system with the fs19596 filter that has the built in WIF sensor. My question is it possible to connect my existing WIF sensor wires from the Racor to the fleetguard filter? I’m assuming this can be done or is this switch more extensive? I don’t understand how the harness that comes with the quantum kit can be wired to the existing wires. Photo of existi…
2 RepliesNovember 20, 2022 at 9:24 am Thanks Tony. I just have the standard VDO analog instrument cluster with the WIF alarm. What do do you recommend, or what have others done that have converted to the double double on mechanical 6BTA’s? Just omit the WIF alarm?Last Post by:
posted: 1 year ago
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Large diameter thru hull fitting removal
This topic has 6 replies, has 3 voices, and was last updated by
1 year ago November 5, 2022 at 9:11 am I’m sure someone out there has run into this before. Got a boat on the blocks with worn out seacocks, which usually isn’t a big deal, but the 4″ thru hulls are of a different design than we usually see. Instead of the “ears” that usually are found protruding into the ID of the fitting, these have slots in the ID to receive a male profile tool. I haven’t been able to find a matching set or a tool designed fo…
6 RepliesNovember 19, 2022 at 2:44 pm Adding to Clark’s post———– 85-5-5-5, AKA 85- triple nickel bronze is considered the standard of the industry as to a best compromise for most under water marine thru hulls, valves, etc.. It’s part of what is called a group of copper based alloys gun metal alloys. Also called red brass in some cases. The problem is you to have to trust your supplier these days as absolutely in many cases, IMO 85-5-5-5 …Last Post by:
posted: 1 year ago
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Heat Exchanger Cleaning on Seakeeper Gyro
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