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- Cummins Marine Forum Topics
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ECU hour adjustment
This topic has 6 replies, has 2 voices, and was last updated by
3 years ago November 21, 2020 at 3:05 am Hi All, Does anyone know if it is possible to get the hours changed on a cm850 ECU? I have just put on a 2nd hand one to replace a broken one. It currently shows 9999 hours on Smartcraft .. Cummins say they cant make the hours the same as they were on the previous ecu. Google says its possible with Calterm? thanks Luke
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in: Cummins Marine Engines
6 RepliesFebruary 5, 2021 at 10:08 pm I found a way. Not the right way.. Data link-program. I even found a way to turn of the broken Wif sensor on the old ecm I replaced. So deep down I could have not bought a 2nd hand ecm and paid Cummins to recalibrate it. I would have been 1 k better off this way at the beginning.Last Post by:
posted: 3 years ago
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Reman common rail injector or not
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago September 28, 2020 at 6:15 pm Hi All, What are the thoughts on reman QSC Bosch injectors. My local Bosch dealer has them at a bit over 1/2 the price of the new ones? My local mechanic say they haven’t seen a successful common rail reman done locally and suggested new. cheers Luke
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in: Cummins Marine Engines
3 RepliesSeptember 29, 2020 at 6:11 pm My experience has been that Cummins RECON injectors are “as new”.. As to buying rebuilt injectors from another source, no experience doing that, but that alone would not deter me from buying them from a well established aftermarket source if the $$ was a major factor.Last Post by:
posted: 3 years ago
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qsc cracked turbo x 2
This topic has 4 replies, has 3 voices, and was last updated by
3 years ago July 29, 2020 at 2:54 am Hi Guys, While doing some other work I noticed both my turbo housings are cracked, I am not sure if they leak yet but will do tomorrow. So both are cracked in the same place, I am not sure if it is new or came with the engines 2nd hand as I have never taken the heat shield off and had a good look. Anyone seen this before? Other than a new housing, would you drop the housing off the turbo and give it a weld ? Or just paint over it and see if…
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in: Cummins Marine Engines
4 RepliesAugust 15, 2020 at 10:49 am Is it possible your exhaust is unsupported and causing too much load? The crack goes right through a bolt hole. Maybe weight plus vibration is causing it.Last Post by:
posted: 3 years ago
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qsc ecm replacement
This topic has 2 replies, has 2 voices, and was last updated by
4 years ago November 30, 2019 at 4:25 pm So I need a new ecm some time as the wif sensor part has died( I have been clearing it for 2 years now..). I tried swapping it engine to engine and the alarm went with the ecm. It is shitting me enough now and I dont want to just clear a alarm in case it is something important every time I start. Can I get any 2 port and power ( for QSC) , then get it reflashed and the data transferred across? Or do I need to get one the right code and then c…
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in: Cummins Marine Engines
2 RepliesNovember 30, 2019 at 4:39 pm Thanks for the fast reply Tony. I will drop Corey a email. I will see if he has a solution for me.Last Post by:
posted: 4 years ago
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Cetop3 flow rates
This topic has 5 replies, has 2 voices, and was last updated by
4 years ago September 1, 2019 at 6:26 am Hi All, Just thought I would try the brains trust. I have tried google and cant find what I am after. So a cetop 3 direction solenoid valve says it flows at 60 lpm ish depending in brand. I am assuming that would be at the max flow rate at max pressure of 350bar? Does anyone have or has seen a flow rate chart depending on pressure? I would assume the flow rate at 100bar would be a lot less around 20? So this is on my Hydraulic thruster, I coul…
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in: General Discussion
5 RepliesSeptember 7, 2019 at 2:06 pm Yes, you need more pump displacement so you can do what you need to do at a lower RPMLast Post by:
posted: 4 years ago
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Cummins Onan temp switch
This topic has 5 replies, has 3 voices, and was last updated by
5 years 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 …
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in: Instrumentation & Electronics
5 RepliesFebruary 21, 2019 at 7:57 am The ones we use are normally open (when holding it in your hand) and they close on rise to complete the simple alarm circuit. Yours could be normally open (N.O.) or normally closed (N.C.) (and open on rise) depending on the type of circuit. Figure that out for testing the system. You tested the switch per Justin’s instructions, now take it a step further and re-install the switch and test the system. If it’s N.O. you jump the lea…Last Post by:
posted: 5 years ago
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Smart craft gear box pressure alarm
This topic has 2 replies, has 2 voices, and was last updated by
5 years ago February 3, 2019 at 3:33 pm Hi All, Does smart craft v1 have a gear box pressure alarm or just the pressure reading? Basically I blew a shaft seal on a PTO pump on a ZF 286a, that pumped the gear oil into the steering and fried the clutches. The gear locked in Fwd, not Rev like the selector was… so it shot ahead when berthing and made a crunching on someone else’s marlin board.. We are looking at a way to not have to happen again. It is running a Metaris V…
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in: Instrumentation & Electronics
2 RepliesFebruary 4, 2019 at 3:04 am Thanks Tony, I got the report on the GB today and it cooked the secondary clutch. Parts are on the way as the gear was only 800 hrs old. Electronic shift block is getting a strip and clean before going on the spare box. I ran the engine the next day( mainly to pump oil around the GB and shaft seals). The oil levels were fine with no oil loss. I would have about 7 bar engaged pressure fwd or astern and 24 bar in neutral. I cant really explain …Last Post by:
posted: 5 years ago
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Reducing turbo wine
This topic has 1 reply, has 2 voices, and was last updated by
5 years ago January 6, 2019 at 4:29 am Hi All, I have a pair a QSC 540’s on a aluminum boat, painted deck not carpet or rubber mat. I am looking to reduce some engine noise. I have 50mm foam with silver lining through the engine room, the hatches have a thick coat of https://www.mascoat.com/sound-damping-and-control.html sprayed on them. Most of the noise is 2200 rpm+ at cruise speed . While I can add another layer of something to the hatches the turbo only has a heat shi…
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in: Cummins Marine Engines
1 ReplyJanuary 19, 2019 at 7:05 pm Let me see pics of your engine room showing all, all the insulation your are talking about, etc………… Tony.Last Post by:
posted: 5 years ago
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Cold weather hard stand
This topic has 5 replies, has 3 voices, and was last updated by
5 years ago
September 27, 2018 at 9:47 pm Hi All, What are the side affects of using / storing a boat on the 75 degree contour? It would get used in the warmer months( when its not frozen) and then have all the fluids drained ect prior to winter storage. Is there any side affects from storing a boat in well below freezing for 8 months a year? More engine wise, or would a couple of winters take the life of a engine? Thanks Luke
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in: General Discussion
5 RepliesSeptember 28, 2018 at 5:56 pm That was about the only place I figured it would be below freezing for so long!Last Post by:
posted: 5 years ago
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QSC Barring tool
This topic has 4 replies, has 3 voices, and was last updated by
5 years ago May 8, 2018 at 9:54 pm Hi Guys, What is the correct way/ tool to bar over a QSC when doing valve adjustement ect. Is it a big socket on the fuel pump nut? Thanks Luke
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in: Cummins Marine Engines
4 RepliesMay 11, 2018 at 7:41 pm Phil, Yes is is OK, but the problem is the belt tension side is backwards so it only lets you rotate the engine backwards–it sucks, as on the mechanical engines, that really made it easy………………………..Try it and you’ll see what I mean TonyLast Post by:
posted: 5 years ago
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QSC remote oil filter
This topic has 1 reply, has 2 voices, and was last updated by
6 years ago March 26, 2018 at 4:25 pm Hi Guys, I am getting a few minor leaks on the hoses to remote oil filter. Is it possible to screw it directly to the place on the pic? It may be easier than replacing the hoses, Access is just as easy. Thanks Luke
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in: Cummins Marine Engines
1 ReplyMarch 26, 2018 at 7:55 pm Send that picture to be in full res.. I don’t think I can “see” what you see.. I’ve got 2 x 24″ screens and can handle any picture thru my email.. tony@sbmar.com TonyLast Post by:
posted: 6 years ago
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QSC ECU remapping
This topic has 1 reply, has 2 voices, and was last updated by
6 years ago March 2, 2018 at 5:31 pm Hi Guys, I have had a few thoughts and I require some more grey matter.. So in regards to engine life and what could be possible. At present I am happy and I get to a maximum of 75% load at wot. Looking at some of the other posts I noticed that the newer QSC rev out to 3000rpm and mine being older do 2600. Reading into it the higher rev model would have less engine load per rpm ? 2600- 540hp to 550 hp -3000rpm. So could I change my engines to …
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in: Cummins Marine Engines
1 ReplyMarch 3, 2018 at 11:55 am Luke, You are looking at this totally wrong, besides making it more complex that it needs to be. 1) Think of the āinsidesā of your engine as the same as all of the QSC versions as to what REALLY matters. 2) Put the term “Load % ” out of your vocabulary for this discussion , as in the real scheme of things, and for what you are trying to sort out in your mind, itās just about totally meaningless 3) Only think GPH at the various R…Last Post by:
posted: 6 years ago
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QSC injectors
This topic has 7 replies, has 4 voices, and was last updated by
6 years ago February 18, 2018 at 2:41 am Hi All, I got a #331 error for injector no 2 today. QSC 540hp Its running rough and the engine has a notable miss and vibration. It looks to be a swap out for a new injector? Can I get the current one reconditioned? I have been told not. thanks Luke
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in: Cummins Marine Engines
7 RepliesFebruary 20, 2018 at 5:05 pm Racor 900’s and 1000’s are not easy on space, if things get tight consider losing the Racor altogether and going SMX. I just removed my 900’s and putting together SMX double doubles which I will be installing shortly. Looking fwd to the better filtration, zero maintenance and considerable saving of space.Last Post by:
posted: 6 years ago
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Cummins QC5100
This topic has 3 replies, has 2 voices, and was last updated by
6 years ago January 25, 2018 at 1:34 am Hi All, Would a Cummins QC5100 Quick Check be of any use? If so how much would one pay 2nd hand? One has just come up at a end of project auction. Thanks Luke
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in: Cummins Marine Engines
3 RepliesJanuary 26, 2018 at 10:59 pm You have a Mercury Diesel View and Outboard type link gauges.. But I see you are into large Displays.. Why not just go to NEMA 2000 and put it all on a real screen–Your computer puts out all you need–Use just need something to “read it”.. TonyLast Post by:
posted: 6 years ago
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QSC aftercooler seals
This topic has 9 replies, has 6 voices, and was last updated by
6 years ago January 9, 2018 at 4:31 am Hi All, I have finally decided to pull the aftercoolers and see what I am in for. Both had no grease and oval shaped orings, one was pretty seized. i have no idea how long they have been in for. One has some surface damage from? The other has 4 seals on the sides, are these the ones getting thrown away on the video from the B/C series? Thanks Luke
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in: Cummins Marine Engines
9 RepliesJanuary 17, 2018 at 8:25 pm Looks good, but we do our testing at 25 PSI.. TonyLast Post by:
posted: 6 years ago
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Welding and electronic engines
This topic has 2 replies, has 2 voices, and was last updated by
6 years ago October 6, 2017 at 5:16 pm Hi All, what is the actions to take when welding on a boat with a electronic engine. My vessel is aluminum . Is it just drop the main earth wire off the battery’s or pull the ecu connectors? Or something more? thanks Luke
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in: General Discussion
2 RepliesOctober 7, 2017 at 4:17 pm Thanks Tony.Last Post by:
posted: 6 years ago
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WIF alarm
This topic has 6 replies, has 4 voices, and was last updated by
6 years ago May 23, 2017 at 3:46 am Hi All, My new to me QSC engines do not have a WIF sensor installed, do I buy the blanking cap or the sensor. Is the sensor worthwhile? Thanks Luke
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in: Instrumentation & Electronics
6 RepliesSeptember 22, 2017 at 11:15 am Where did you get the terminating resistors from? Can you send us a picture of the harnessing / wiring?Last Post by:
posted: 6 years ago
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QSC heat exchangr sight glass
This topic has 3 replies, has 2 voices, and was last updated by
6 years ago September 3, 2017 at 12:22 am Hi All, I have limited clearance above my heat exchangers ( 3 inch). Has anyone put a sight glass into a heat exchanger before? At present I can only take the cap off and put a bent finger into it and have no idea of colour ect other than I get some blue liquid on my finger. I have seen them on MTU and Scania. As I am new to QSC’s. Other than the aftercoolers, heat exchangers, anodes, oil and filters is there any other service items I…
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in: Cummins Marine Engines
3 RepliesSeptember 4, 2017 at 7:44 pm Do they seem to work as designed, meaning between cold and hot the level rises 1-2″ and goes back down t the cold level as things get back to ambient temps? TonyLast Post by:
posted: 6 years ago
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Vulcan coupling life
This topic has 2 replies, has 2 voices, and was last updated by
6 years ago August 26, 2017 at 10:30 pm Hi All, I just left a vessel that has developed a gear oil leak on the main input shaft as it is dripping out the drain on the flywheel housing. It is MG 5114a with 100 hours from rebuild, the gear box has other issues . I don’t trust it and it think it needs to come out fp. All that being said they are still working the vessel 12 hours a day and have a 750nm steam back in 2 weeks. With all the oil on the silicone vulcan coupling how lon…
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in: Marine Transmissions
2 RepliesAugust 29, 2017 at 3:56 pm Thanks Tony.Last Post by:
posted: 6 years ago
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QSC propping to engine load
This topic has 2 replies, has 2 voices, and was last updated by
6 years ago June 14, 2017 at 6:03 pm Hi Guys, I am after some input on engine load to propping. I have just swapped out a pair of 3208’s to qsc 540’s. I think I may be close but everyone wants more speed if they can have it. The props were calculated on the 490 hp curve to keep within the shaft limits for survey( I am using marinex hs22 2.25). I can post the full numbers but at 2400rpm I get 19.5 knots @ 120 LPH and 52% load. At 2600 I get 22 knots and 74%. The engine …
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in: Boats & Repowers
2 RepliesJune 25, 2017 at 2:56 am Thanks Tony, It makes sense when you say it like that. The sea water sides are on my list to strip and clean. thanks LukeLast Post by:
posted: 6 years ago
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ECU hour adjustment
