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- Cummins Marine Forum Topics
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6CTA – Turbo Dripping Oil
This topic has 2 replies, has 2 voices, and was last updated by
9 hours ago
April 26, 2024 at 7:08 am First time I noticed this was after putting the boat back in the water yesterday and going for a long ride to test temps out after servicing the Aftercoolers per Tony’s method. Ā There was oil ontop of the transmission which seems to be coming from the Turbo. The oil is clean and looks new so it must be from my recent oil change which is why I believe this is a new thing that happened yesterday.Ā Ā Ā
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in: Cummins Marine Engines
2 RepliesApril 28, 2024 at 12:49 pm Tony, I think most of this was caused by the previous owner who had a corroded to hell aftercooler core that failed a pressure test. Two years ago I purchased a new SMX one and replaced and since then the cores have passed the tests and have been serviced (about two weeks ago). I believe that was the cause of the condition of this turbo, but if not what else should I be looking at? Is there some way to “clean” up this turbo to preven…Last Post by:
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Help with QSB leaks
This topic has 3 replies, has 2 voices, and was last updated by
14 hours ago
April 24, 2024 at 10:40 am Hi.Ā 2007 vintage QSB 5.9 355hp in a 32′ Tiara Open.Ā Found these apparent leaks on the rear of the port side motor.Ā Second two pics are the sameĀ from slightly different angles.Ā First is on the left rear side of the motor.Ā What is going on and how to address?Ā Thanks.Ā BTW they have around 1250 hrs on them.
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in: Cummins Marine Engines
3 RepliesApril 28, 2024 at 7:36 am Thank you Tony, willdo.Last Post by:
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Cummins 5.9 QSB 380 hp Temperature Alarm
This topic has 5 replies, has 2 voices, and was last updated by
1 day ago April 27, 2024 at 8:34 am I was sea trialing a boat we are considering purchasing and while running a short distance at 3000 RPM the overheat alarm went off and the gauge is reading 183 degrees. I am trying to understand what temperature the alarm should go off. It seems like 183 is higher than what I would expect. I would expect about 176 to 178. Question is what temperature is the alarm supposed to go off? 183 degrees is not that much over what I thought would be the n…
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in: Cummins Marine Engines
5 RepliesApril 27, 2024 at 6:33 pm under 180F would be normalĀ coolant temps under 110 F would be normal IMT tempsĀ Ā The aftercoolers are most important as this stage. Ā Plus, pictures of the engine installationĀ from all around would be a very advantageous for you–My eyesĀ miss nothing if the pics are good.Ā Download the attached example.Ā ĀLast Post by:
posted: 1 day ago
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Over propped?
This topic has 1 reply, has 2 voices, and was last updated by
1 day ago April 27, 2024 at 3:17 pm <li style=”list-style-type: none;”> So my American Tug 34, with Cummins 380 HOĀ under fueling up to 1600 rpm the overfueling over1600 rpm Prop is a conquest 26LH26 Ā Ā Number below Ā 1200, 1.6 1400, 2.4 1600, 3.5 1800. 5.5 2200, 10.3 2400 12.9 2600, 16.6 2800, 18.4 2920,19.6 max rpm Ā Your input is appreciated Ā High idle 3065 Ā Thanks Ā Alan Ā
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in: Cummins Marine Engines
1 ReplyApril 27, 2024 at 4:25 pm At what RPM do you cruise at 90+ % of the time weather permittingLast Post by:
posted: 1 day ago
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Trying to convert my old SC5000 to the new SmartCraft Connect
This topic has 4 replies, has 4 voices, and was last updated by
1 day ago December 14, 2023 at 11:46 pm Hey guys I’ve got the original SC5000 engine screens on my 2006 Tiara and they are pretty much toast. I’m trying to get the SmartCraft Connect Gateway that allows me to push all that data to some dedicated 7″ Raymarine Axioms instead and I’m trying to see if it’s possible. It appears the way my gauges are wired I have 2x Single SmartCraft junction boxes instead of 1x Dual engine box. Does that mean I will need to ge…
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in: Instrumentation & Electronics
4 RepliesApril 27, 2024 at 3:14 pm your options are here: corey@sbmar.comLast Post by:
posted: 1 day ago
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Vertical mount turbo on qsb
This topic has 1 reply, has 2 voices, and was last updated by
1 day ago April 26, 2024 at 7:07 pm I am going to have to get a “cleaner” engine in the near future for my charter boat, and the qsb 6.7 is likely what I will use to replace my cherished 6 bta. Upon looking at the qsb, it doesnt seem like there is a place to vertically mount the turbo like there is on the 6 btas. Is there a way to vertically mount the turbo? In the case it cannot be vertically mounted to obtain the 12″ above waterline for exhaust is that accompli…
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in: Cummins Marine Engines
1 ReplyApril 27, 2024 at 3:09 pm NoĀ high mount turboĀ Ā option available A proper custom riser is your only optionLast Post by:
posted: 1 day ago
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6cta Motor Mounts – How to test?
This topic has 9 replies, has 3 voices, and was last updated by
1 day ago April 4, 2024 at 5:15 pm Purchased this 2001 Tiara 3800 with 6CTAs 4 years ago, these were the mounts on the vessel, not sure how far they date back but I am starting to wonder if they are good or not, the left motor seems to vibrate alot more than it used to under way.Ā Ā Ā Ive been reading some threads about alignment as well, anything obvious to look at or photograph to be able to tell? The props were fixed at my inspection survey, and I have not hit anything that I a…
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9 RepliesApril 27, 2024 at 5:00 am Could be prop(s) related.Ā When she was on the hard I would have pulled the wheels and had them scanned.Last Post by:
posted: 1 day ago
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Smx 27 Impeller Install
This topic has 6 replies, has 7 voices, and was last updated by
2 days ago
April 23, 2024 at 10:34 am I’m trying to install a new SMX 27 impeller in my SMX 1730 pump. First time replacing it. Impeller won’t go in all theĀ way. I think it’s getting stuck on something orĀ ot fitting on spline. Tried two different new ones. Any advice or experiences.Ā Thanks
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in: Cummins Marine Engines
6 RepliesApril 26, 2024 at 7:08 am I have one type of engine in the field that has a crank mounted keyed impeller.Ā It is on a supercharged ZZ8 engine.Ā All the supercharger plumbing makes it extremely difficult to do the install, as does the rudder packing gland, and the dang key always wants to slide out when you are sliding the impeller in.Ā I actually use silicone spray, or soap for lubricity on these, and I also use about 3 zip ties to squeeze the fins to minimize the fricti…Last Post by:
posted: 2 days ago
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4BT LUBRICATING OIL FILTER HEAD
This topic has 2 replies, has 2 voices, and was last updated by
April 25, 2024 at 2:42 pm I am trying to find the right plunger and spring for my oil filter head.Ā I somehow managed to loose the oil filter head after disassembling, so I had to order another one.Ā I ordered all parts according to QSOL, and the plungers are different.Ā I cannot seam to find the right plunger to fit this oil filter head.Ā The plunger in this head installs from the bottom, as apposed to the top. Ā Any recommendations would be appreciated Ā 4BTĀ CPL 741 S…
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2 RepliesApril 26, 2024 at 6:32 am I like a parts guru!!Ā Ā Thank you!Last Post by:
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Climbing EGTs on PME 480CE
This topic has 1 reply, has 2 voices, and was last updated by
3 days ago April 25, 2024 at 4:51 pm 480CE on CC35 – Climbing EGTs on Port Main<br /><br />Boat: 35Ā“ Carolina Classic 2003<br /><br />Engines 480 CE 6CTA<br /><br />Stbd Serial No: 46211591<br /><br />Port Serial No: 46211572<br /><br />(can someone run these engine s to see history or if heads were ever updated?)<br /><br />First season with the boat the wastegate plate rusted through which i ended up re…
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in: Cummins Marine Engines
1 ReplyApril 25, 2024 at 6:34 pm Post good pictures of the engines from all around so I can see all.–What you are working with..Ā An example attached of what I needLast Post by:
posted: 3 days ago
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ZF 220 housing crack
This topic has 2 replies, has 2 voices, and was last updated by
3 days ago
April 23, 2024 at 6:56 pm ZF 220 A gearboxes were pulled apart for bearing and seal replacement while the engines were rebuilt and an internal crack was noted in one of the housings, refer attached photos. It appears that the crack has propagated from a pilot pressure hole, does anyone have a flow diagram for the ZF 220 so I can figure out what caused the crack. I am thinking of using a rotary burr to open up the crack and TIG welding it back together then redrilling the…
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in: Marine Transmissions
2 RepliesApril 25, 2024 at 1:23 am Will be back at the boat next week Tony, will snap some high rez pics and post them. Am wondering what regulates the high pressure that the gearbox uses to lower pressure for bearing lubrication.Last Post by:
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Considerations for 6BTA with High-Output Alternator
This topic has 1 reply, has 2 voices, and was last updated by
4 days ago April 24, 2024 at 12:35 pm Background: I’m considering removing the 12.5kW Westerbeke diesel genset from a boat that has a pair of Cummins 330B engines (2001 vintage). I want to replace the genset with a pair of Magnum Inverter/Chargers (stacked) and a roughly 48kW-Hour battery bank (LiFePO4).Ā This will cover our requirements for 24-72 hours. When away from shore power for extended periods I want to re-charge the LiFePO4’s by replacing one or both of the exis…
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in: Cummins Marine Engines
1 ReplyApril 24, 2024 at 4:17 pm 1———–The alternator drive system on your 6BTA’s will not support driving an alternator output above about 60-70 AMP’s at 700 Idle RPM,Ā or much above 180- 200 AMP at 1500 RPM.. ……….. And that is IF everything is perfectĀ Ā I use 13.5-13.8VDC as the bases line measured at the battery terminals And IMO, do not waste any money on any small framed pumped-up alternator just because it happens to &#…Last Post by:
posted: 4 days ago
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Balmar alternator
This topic has 4 replies, has 5 voices, and was last updated by
4 days ago
April 10, 2017 at 6:45 am Hello,I had my starboard alternator go out on me. I have a 2001 3500 Tiara Open with twin 370 6BTA engineĀs. I have 3 AGM 1000 MCA 800 CCA house batteries on the starĀboard side. The starĀboard alternator is missing it’s tag. The tag is still on the port alternator BaĀlmar (912-100) 100 amp and it’s charging two AGM starting baĀtteries . I have a external alternator voltage regulator. ShĀould they both the star and port be the exact …
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in: Cummins Marine Engines
4 RepliesApril 24, 2024 at 1:31 pm Balmar XT series high-output alternators (assuming 2:1 ratio AltRPM:CrankshaftRPM) are around 70% of max output at 1,000 engine rpms and over 80% by the time you get to 1,250 RPM.Ā Make sure to factor in the ‘gear ratio’ (pulley ratio) between crankshaft and alternator shaft RPMs when looking at alternator output curves. If I am not mistaken, other high-output alternators have similar if not better output vs. RPM curves these days. A…Last Post by:
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Oil Leak at turbo after installing CCV system
This topic has 6 replies, has 2 voices, and was last updated by
1 week ago
April 16, 2024 at 2:16 pm Hello, I just recently purchased an Enviro Crankcase ventilation kit. After installing my Cummins 370 developed an oil leak (slobber) at the opposite side of the turbo from the air cleaner. The air cleaner itself also shows of some oil saturation. Is this a normal effect from the ccv? Everything else seems perfect, lots less smoke after hours of trolling also. Thanks for any advice.Ā
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in: Cummins Marine Engines
6 RepliesApril 21, 2024 at 11:59 am 12 quarts cold at dock. Engine previously vented from the vent tube directly into the bilge via a short hose. Never have removed the air side for a good cleaning.Ā Tony, thanks a bunch for taking a look at it. Seems from above conversation just may need to pull the turbo and take it in for service. I was thinking a seal, but have little knowledge of the units inner workings.Last Post by:
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O-rings on the after cooler and heat exchanger pipes
This topic has 7 replies, has 3 voices, and was last updated by
1 week ago
November 18, 2016 at 4:47 pm Ordered the after cooler heat exchanger kits. I just bought the boat so I ordered the O-rings that go on all the pipes. They got delivered today and some of them seem very close in size. Do I just try to size them up to the old ones or is there a picture I can look at and match up part numbers. Thanks for the help George
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in: Cummins Marine Engines
7 RepliesApril 18, 2024 at 1:53 pm All I can tell you about proper O-rings for the Aftercooler is they should fit the groove in the cap. PERFECTLY!! I got a kit and it was the wrong one. The difference is so slight/little. Double or triple check to make sure youāve got the right ones. If theyāre not correct, youāll be buying the Cummins overhaul kit after sucking sea water into your cylinders. ( 1st hand knowledge ) Tony tip was dead on. If you have the slightest doubt, take pics…Last Post by:
posted: 1 week ago
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QSB 5.9 380 – airsep oil return check valve leak
This topic has 5 replies, has 3 voices, and was last updated by
1 week ago
April 15, 2024 at 2:12 am Hello, Ā sorry if this has been answered before but the search function is not working on the site for me. My friend purchased used 2003 sea ray 39 with a pair of Cummins QSB5.9 380s. One of them is leaking a ton of oil right at the oil return check valve, but it is the second part and it does not match the imagine in Tonyās tips. Can anyone help me locate this part and how to install? Iām pretty sure the leak is coming from here but it may be t…
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in: General Discussion
5 RepliesApril 18, 2024 at 1:31 pm Hi, i would recommend having a mobile machinist (unless you are good at cutting a thread in the block) come out and thread the block so that you can cap off the hole and then install Tony’s kit. Not sure if routing the drain hose to a different location would be an option.Ā ĀLast Post by:
posted: 1 week ago
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6CTA Starboard Aftercooler Recommendation
This topic has 12 replies, has 5 voices, and was last updated by
1 week ago
March 19, 2024 at 11:10 am Good morning SBA team,Ā I pulled the starboard aftercooler for maintenance and discovered some corrosion. I have a pair of 2002 6CTA 450’s which were last serviced in 2019 and installed fresh water strainer caps at the same time. I was surprised at the amount of salt build up, I religiously flush the engines after every use except when cruising multiple days which is onlyĀ about 10-12 days a year. There was quite the buildup in the hose ex…
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in: General Discussion
12 RepliesApril 17, 2024 at 1:47 pm I finally got around to putting it all back together. I bypassed the fuel cooler and remounted the aftercooler. I started a fresh water flush as I normally do with the sea cock open.Ā After ~10 minutes I shut it down and pulled the lower zinc and did my taste test. It definitely was salty water as I expected, not pure salt water but still a bit salty. Based on this experience I will now start closing the sea cock during the flush. We have great …Last Post by:
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Where are drain plugs/cocks located to empty QSB 5,9 for coolant/anti-freze
This topic has 5 replies, has 3 voices, and was last updated by
1 week ago April 2, 2024 at 1:46 am Trying ot source proper drawings on where the drain plugs etc are located in order to change the cooling fluid on my engine.
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in: Cummins Marine Engines
5 RepliesApril 16, 2024 at 6:26 pm To access a PDF attachment you need to click on the red text pdf filename, not the thumbnail image.Last Post by:
posted: 1 week ago
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6bta-330, boost and transmission pressure gauges
This topic has 6 replies, has 2 voices, and was last updated by
1 week ago
April 9, 2024 at 3:57 pm 6bta-330 I’m having problems with the wiring of my engines to the Digital View display panels for boost and transmission pressure gauges. I installed new 0-150 vdo pressure sending units. the engines already had the VDO transmission pressure sending units installed. The transmission pressure sending unit is connected to the white wire on the on-engine harness to the display panels. The boost pressure sending unit is connected to one of the…
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in: Instrumentation & Electronics
6 RepliesApril 15, 2024 at 4:15 pm I took your advice and reread the install/user manual again but I did it at the boat this time. The important information, in my case, was the pin locations for the primary and secondary connector. You were 100% correct, when you said it was wired incorrectly. I made a mistake in a previous post. The hour meter works but the trip hour meter does not work. On the primary connector, there is a purple wire in location # 2 where a red wire is suppo…Last Post by:
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QSM11 Oil Leak
This topic has 2 replies, has 2 voices, and was last updated by
1 week ago
April 14, 2024 at 8:01 pm <br /><br />The boat is a 2005 model with QSM11 535HP. We have identified an oil leak at the rear of the engine where the gearbox meets the block. The plate and or drain plug appear to be leaking. Can anyone offer any advice as to cause and repair? *I am unsure why the images are being inverted when uploaded.Ā Regards
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in: Cummins Marine Engines
2 RepliesApril 15, 2024 at 4:07 pm Thanks for the response Tony. Will attempt to access the drain plug, otherwise diapers will have to suffice. Regards,ĀLast Post by:
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6CTA – Turbo Dripping Oil
