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- Cummins Marine Forum Topics
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6CTA Aftercooler Removal and Service Issues
This topic has 16 replies, has 7 voices, and was last updated by
2 weeks ago
April 18, 2022 at 8:11 am After the thorough information and write-ups from Tony and the SBMar team, and the readily available parts kits they supply, I decided to tackle my aftercoolers this year. This is my second year with this vessel, a 2001 Tiara 3800 Open with 6CTAās, roughly 500 hours. It was previously serviced by Gorham Diesel out of the Boston area. The aftercoolers were replaced with brand new ones 4 years ago, so I am assuming that this is the first āserviceā…
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in: Cummins Marine Engines
16 RepliesApril 28, 2024 at 3:02 pm That starboard core looks like crap but maybe try pressure testing it after cleaning it incase it still holds pressure? Ā I dont have the SMX housing (does one exist?), but I do have the SMX core on my Port Side with the original housing and no issues, pressure test passed. My 2nd year with it btw, previous owner didnt do the bench and when I went to do the bench I found corrosion and a failed pressure testĀLast Post by:
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SMX pump problems
This topic has 4 replies, has 3 voices, and was last updated by
7 months ago October 1, 2023 at 8:39 am I’ll ask again, has anyone had problems or failures when switching to SMX. More so referring to the infamous nut failure grinding up in the gears? Ā asking bc I just spent about 2k on the smx pumps, and have seen conflicting info. thx -Lewis
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in: Cummins Marine Engines
4 RepliesOctober 11, 2023 at 4:06 pm Thx Doug, Just browsing, looks like you see a fair amount of SMX haters as Sherwood mixed bag out there as far as opinions. I was more concerned about the nut failure on the Sherwoods that causes gear damage to the engine.Ā thxLast Post by:
posted: 7 months ago
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6CTA 8.3 480CE or QSB 5.9
This topic has 9 replies, has 5 voices, and was last updated by
8 months ago
September 1, 2023 at 1:14 pm I am getting ready to buy a Sea Ray 40 motor yacht. The years that I’m looking at have either the 6CTA 8.3 480CE (480hp) or the QSB 5.9 (425hp) I’m aware of the valve problem on the 480 CE made worse by improperly propped boats and clogged aftercoolers. Other than that which is the best engine for this application? Why? Thanks
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in: Cummins Marine Engines
9 RepliesSeptember 7, 2023 at 6:22 am Thanks Tony, you’re the man!Last Post by:
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2003 480CE Cooling Air Bleed/ Fuel Leak/Voltage Droop
This topic has 4 replies, has 4 voices, and was last updated by
1 year ago
April 17, 2023 at 1:17 pm Had to remove turbo and housing to repair a broken stud in the exhaust manifold. Had to drain antifreeze down to perform this job. Ran the motors yesterday and was having a really tough time getting air to purge and flow back up to holding tank. Filled Antifreeze to level where it spilled out petcock at top of neck. Any recommendations on purging the system? Also a bit worried to run engine for too long, its on the hard now. Temperature was incr…
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in: Cummins Marine Engines
4 RepliesApril 20, 2023 at 5:21 pm I have posted my tome below to save a lot of typing. Hope it helps.Last Post by:
posted: 1 year ago
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6 CTA Aftercooler housing repair while I wait for a new one…
This topic has 13 replies, has 7 voices, and was last updated by
1 year ago March 29, 2023 at 5:30 pm Took my aftercooler in for testing at Niemic my local Cummins dealer and the core bundle had pinholes and there is pitting in the housing right up to the oring seals. Bought the boat last year, it and the engine are 1998, so time for a new one. Niemic tells me these are out 100 days. So I called Seaboard and the helpful parts guy told me they have the core, but similar bad news on the housing. He also told me that Seaboard is working on its own …
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in: Cummins Marine Engines
13 RepliesApril 8, 2023 at 3:14 am I have used an Italian product called Belzona 1391T for such an issue before with good results.Ā The trick is to blast and clean the surface and have all oils and grease gone.Ā Apply a thin coat with a fine wide artist’s camel hair brush.Ā On curved surfaces like the inside of the AC I like to use something like a piece of the wall from a 4 inch PVC pipe with stick-on PSA sand paper (various grits) to finish it down. The curved backing hel…Last Post by:
posted: 1 year ago
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2003 480CE Fuel Bleed
This topic has 3 replies, has 4 voices, and was last updated by
1 year ago January 31, 2023 at 7:49 am New member to the site and recently purchased a vessel with a pair of 2003 480CE engines. Ended up changing the fuel coolers while I was changing aftercoolers and trans coolers etc.Ā Looked thru a great deal of literature and have not been able to find a procedure on bleeding the air from the system. Engines have Bosch injector with the manual bleed pump. I’m just looking for the procedure on exactly how to use it. Is there a bleed screw t…
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3 RepliesFebruary 5, 2023 at 4:47 pm Pic attached..Ā Ign on during the process. Use the squeeze bulb at the same timeLast Post by:
posted: 1 year ago
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FW Flushing Options
This topic has 8 replies, has 6 voices, and was last updated by
1 year ago
November 22, 2022 at 11:47 am I removed my fuel coolers when I installed SMX pumps.Ā Looking to start freshwater flushing after each use.Ā Can I add a bronze T adapter/ball valve in the hose replacing the fuel cooler between the output of the raw water pump and bottom of the aftercooler? From the t-adapter/ball valve I would have water lines going up to quick connects under the port and stbd gunnel for easy access. I have Southbay strainers (external wedge style).Ā No intern…
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in: Cummins Marine Engines
8 RepliesDecember 16, 2022 at 6:16 am āSeaboard is working on some new risers/mixers for me now so they will be rightā āIāve confirmed I have horizontal water lift mufflers so Iāll need to flush with the engine onā Its unlikely but you may still be able to flush with the engines off if there is enough height over the mufflers and the exhaust outlet is above the waterline. As Seaboard are involved with redesigning your risers/mixers they would know if you have supplied drawings/measu…Last Post by:
posted: 1 year ago
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Cummins ED-1 operators manual
This topic has 1 reply, has 1 voices, and was last updated by
1 year ago
August 30, 2022 at 8:35 am Does anyone have a Cummins ED-1 engine operator display manual that they can share or refer me to someone who does.Ā Ā
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in: Instrumentation & Electronics
1 ReplySeptember 21, 2022 at 4:26 pm PivotĀ Ā Ā It sounds like you have a user manual for the ED-1.Ā Could you make a copy for me?Last Post by:
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6CTA 8.3 430hp Valve specs ?
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago May 8, 2022 at 5:52 pm Hi, Anyone know the Intake Valve and Exhaust Valve specs for 6CTA 8.3 430 hp?Ā
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in: Cummins Marine Engines
2 RepliesMay 9, 2022 at 5:02 pm It’s listed on the engine data tag right on your engineLast Post by:
posted: 2 years ago
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6CTA Turbo Availability
This topic has 1 reply, has 2 voices, and was last updated by
April 16, 2022 at 5:22 pm regarding the turbo for a 6cta 450, I can see that seaboard lists them as out of stock…and so does everyone else!Ā I guess this is somehow a covid thing? Does anyone know how to get your hands one?Ā Is there any estimate for how long I would have to wait if I placed an order for one today?
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in: Cummins Marine Engines
1 ReplyApril 17, 2022 at 5:01 am I recently needed a new after cooler for my 480CE engine.Ā My local Cummins dealer did not have any either at their facility or any other authorized dealers.Ā Their computer system does notĀ check independent Cummins dealers like Sea Board.Ā Cummins told me it would take about 84 days after placing the order to get one but there were times when parts would come in much earlier than that.Ā Tony did have the cores available but not the housings so…Last Post by:
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CAT 3196 660hp
This topic has 10 replies, has 5 voices, and was last updated by
2 years ago October 21, 2021 at 1:09 pm Not familiar w/the CAT line. What is the good/bad about the 3196 660hp? Twin engine installation in a 43’/30klbs express.
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in: All Other Marine Diesels
10 RepliesApril 15, 2022 at 3:01 am Douglas, same here as to engine(s) first, boat second, when in the market.Ā I am surprised this concept is not more mainstream….Last Post by:
posted: 2 years ago
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Pressure Test Gear Cooler?
This topic has 13 replies, has 6 voices, and was last updated by
2 years ago February 16, 2022 at 9:57 am New boat to me, with new after coolers, but questionable gear coolers. QSC 8.3 550 HP and ZF286A, and previously stored in salt water with no maintenance by the previous owner. Now in 100 % fresh water with pan heaters on 24/7 while I get her tuned up. Ā I’d like to pressure test the gear coolers with air to get ahead of any failure. What would you recommend for PSI?Ā Anything else everyone might recommend to get her ship-shape?Ā Thanks! &…
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in: Cummins Marine Engines
13 RepliesMarch 6, 2022 at 5:32 am ” I was servicing the raw water system and said I was, āplaying with fireā by not replacing these items” Wow, I think that’s the first I’ve heard of that recommendation.Ā He’s passing up a lot of good paying jobs by not performing raw water services for customers.Last Post by:
posted: 2 years ago
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ZF Cruise Commander error codes
This topic has 2 replies, has 2 voices, and was last updated by
September 1, 2021 at 6:29 am My Cummins 480CE engines are equipped with ZF Cruise Commander throttle and transmission controller. I sometimes get error codes 44 and 45. Anyone know what these codes mean.
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2 RepliesSeptember 2, 2021 at 4:57 pm Yes located manual 250 pages worth. I got that error because of testing my port engine when I turn on Cruise sometimes do not get tone from unit. Already cleaned every contact and it’s improved but not perfect yet. Next I will check switch on my breaker panel. ThanksLast Post by:
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High fuel vacuum
This topic has 11 replies, has 5 voices, and was last updated by
2 years ago
July 8, 2021 at 1:29 pm I have a 1990 6BT 5.9 with a a new dual Racor turbine set up. Running it for the first time when I checked my vacuum was in the red at 20hg with the 2 micron filters that it came with. I checked flow to the filters and it was fine. I changed them to 10 micron and it was better at 15hg so as a test I removed the filters and had 0. Today I changed the filters to 30 micron and have 12 hg any thoughts on where the high vacuum issue may be? Thanks
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in: Cummins Marine Engines
11 RepliesJuly 22, 2021 at 12:33 pm Sorry, I did not notice that you were not the original poster who mentioned Racors.Last Post by:
posted: 2 years ago
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Need fuel fitting ID’d
This topic has 6 replies, has 2 voices, and was last updated by
3 years ago April 21, 2021 at 12:08 pm I need a male fitting for this female fitting. Anyone know what its called and where I can buy one. This fitting is on my injection pump of a Cummins 480CE. Thanks Doug
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6 RepliesApril 22, 2021 at 5:46 pm Yes, they are quick disconnect fittings, AKA “Compu-Check” adapters.. They were installed by the factory for the ease of testing certain things and it was cheaper for the factory to leave them there than to pull them, or they forget.. Choose the answer that to want……………………………Think of the typical QD on and air compressor hose… ………………Last Post by:
posted: 3 years ago
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Questions About Discoloration of Aftercooler/Turbo
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This topic has 21 replies, has 10 voices, and was last updated by
3 years ago November 29, 2020 at 9:48 am I am new to the forum and new to diesel engines. Let me start by saying what a great resource this is. I am currently in the market for a Sea Ray 460 Sundancer between the years 1999 and 2004, and am just starting to look at some different boats. Most of the boats I have seen have either the 450 Diamond Star or 480 CE engines depending on the year. I have been doing research on the forum about discoloration of the aftercoolers/turbo as a sign th…
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in: Cummins Marine Engines
January 2, 2021 at 8:47 pm Harry Karaoglanian wrote: For a new boat or a new used boat? Haha. My broker keeps telling me thereās no way they would add that to a policy for a 2001/2002. Maybe I need to find a new brokerā¦ā¦ Used. But itās a 2019 model.
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posted: 3 years ago
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6CTA with smx
This topic has 2 replies, has 3 voices, and was last updated by
3 years ago November 14, 2020 at 11:56 am My 6CTA’s were refitted with SMX raw water pumps by the previous owner. The pressure port is feeding the PSS dripless packing seal. In my opinion the pressure and flow from the pump is way too much (maybe 5x) for this purpose. When the dripless system was replaced 2 years ago the amount of water escaping between the carbon disc and the stainless steel collar was frightening at 1700 rpm. So anyone have thoughts on this??
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in: Cummins Marine Engines
2 RepliesNovember 15, 2020 at 8:30 am Two things here to deal with.. 1) As the aftercooler, gear cooler and HX clogs with “stuff” from lack of maintenance, the pressure increases inside the pump 2) We ALWAYS put a 1/8″- 5/32″ ID restrictor about 1″ long inside the feed hose when tapping into that port on any pump..This has been SOP for us for close to 30 years………………Alternate way is to slide a 6″ -12″ pie…Last Post by:
posted: 3 years ago
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Location on 480CE engine for Aetna teeth counter sender
This topic has 7 replies, has 3 voices, and was last updated by
August 17, 2020 at 6:07 pm Trying to find location for mounting Aetna Teeth counter sender for their Tachs on a Cummins 480CE engine. I saw two electrical hook ups on left side of bell housing. They are already being used by other components although I do not know for what. Maybe the analog tachs are using one for the present tachs which I am removing. Any help would be greatly appreciated. A photo would be great. Doug
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7 RepliesOctober 8, 2020 at 6:29 pm I put three hours on engines since I wired tachs and no problems so far. Sensor on left does go to smart craft and although not accurate it also works fine.Last Post by:
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370 B Won’t go above 2100
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This topic has 53 replies, has 9 voices, and was last updated by
3 years ago
May 26, 2020 at 5:54 am 32 Holland put up for winter, ran perfectly. Launched over weekend and engine won’t go over 2100. Plenty of throttle left. Went to 3000 in fall. No prop change, no nothing changed. No smoke, runs smooth up to 2100. All filters new, no air restrictions. Ran with fuel from a can, ran without air cleaner. Have not adjusted aneroid yet, but not sure how much to turn star wheel for adjustment. Thinking maybe the shaft that operates diaphram …
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in: Cummins Marine Engines
August 17, 2020 at 9:59 am Aftercooler core and housing brandy new from Sbmar. but here is a question. i have receipts from 2010 for long block replacments . im concerned because the tag on the port motor has a stamp for 230. The turbo and after cooler and marinized parts went back on this new long block. The boat came with and i have the engine tags for the 330s. does the turbo and aftercooler essentually make it a 330 ? Or did the shop that did the swap screw th… 53 Replies
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posted: 3 years ago
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Fuel system losing pressure
This topic has 1 reply, has 2 voices, and was last updated by
July 8, 2020 at 5:04 am I recently purchased a 1997 Formula 41PC with 8.3 6cta m2 engines. Diesels are new to me but I like to perform my own maintenance whenever possible. My engines had always popped right over when starting. I changed the racor filters and removed the plug on the bottom to remove any contaminates. There was a lot of junk in there. I cleaned it out best I could, replaced the filter and filled the housing. I replaced the on engine filter which is a fl…
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in: Cummins Marine Engines
1 ReplyJuly 8, 2020 at 6:22 am You have a leak in the fuel system somewhere. Air is getting into the fuel system which is why you are having a problem while it sits. The longer it sits the more air is allowed into the system. My boat is an 02 and due to age I replaced all the fuel lines and replaced Racors with spin on filters with squeeze bulbs/valve system sold by Tony. I also replaced all the hoses on both engines.Last Post by:
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6CTA Aftercooler Removal and Service Issues
