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- Cummins Marine Forum Topics
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Zeus Pods: Good, Bad, Ugly??
This topic has 10 replies, has 7 voices, and was last updated by
1 month ago October 14, 2018 at 10:15 pm I am considering buying a Meridian 441 flybridge āmotor yachtā, which is 47ā LOA and 31,000lbs. These come with various engine configurations but commonly, with QSB 425ās which can be either shaft-drive or Zeus pods. All my personal experience to date is with 6BTA 370ās in a conventional shaft drive arrangement. I am after some of Seaboardās famous frank and honest advice: should I run away from pod drivesā¦.or go for them if they have a so…
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in: Cummins Marine Engines
10 RepliesMarch 18, 2024 at 1:07 pm Lots of helpful information found here Mercruiser Zeus Pod Owners Group The most important upgrade for Cummins QSB / Zeus owners is the Seaboard Marine water pumps and impellers!!!Ā Ā Keeps the temperatures down and extends the life of the steering seals.Ā Ā Cool water flow is key!Last Post by:
posted: 1 month ago
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Easy Access Switched Ignition Source QSB6.7
This topic has 4 replies, has 3 voices, and was last updated by
9 months ago July 18, 2023 at 9:05 pm I need to connect an external device needing only a micro current draw to a switched source of power….ideally on-engine with easy access, rather than somewhere off-engine (like the ignition switch itself). On my QSB 6.7 480, is the easiest-to-access switched power point the oil pressure switch? thanks in advance
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4 RepliesJuly 21, 2023 at 5:12 am Your specificially said you wanted a swithed power source that could supply “micro-amps” od current..Ā Ā Now you wantĀ a “signal” measuring in millivolts??Ā Ā I offered help but I do not think you have your end under control asĀ nothing about a finding aĀ Ā “signal” ( what ever that is?) that you could measure in a few “millivolts” has anything to do with a switched power source.Ā Ā Voltage & curr…Last Post by:
posted: 9 months ago
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Turbo Coolant Feed Pipe: "slop" normal?
This topic has 4 replies, has 4 voices, and was last updated by
11 months ago
August 18, 2017 at 8:39 pm I’ve bought a set of new engine hoses from Brad for my 6BTA 370, including a turbo coolant return hose. On installing this, I found some ‘slop’ or wriggle in the “water transfer tube” (CN # 3897088) this hose slips onto at the engine end. Looking at a QuickServe diagram, I can see that this tube is held in with a clamp and O-ring. The clamp nut is tight-as and there is no sign of a leak. Can someone tell me if …
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4 RepliesJune 1, 2023 at 11:21 am Hello , and thanks for this forum, Does Tony’s answer apply to my 6BTA 250HP? I changed Turbo coolant return hoses on both engines.Ā The Stbd was tight but no problems. The port hose was really tight, and even with heat and soap it took a lot of force. It Stull was only needed another 1/2 inch to be perfect when the return pipe moved and exhibits this slop.Ā The retainer bolt is tight. I am thinking of removing it and repla replacing the O…Last Post by:
posted: 11 months ago
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Alternator Fuse Location: QSB6.7
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago November 30, 2022 at 3:56 pm New-to-me boat and engines:Ā 2019 QSB6.7 480s.Ā Has the ‘factory standard’ 160A Delco alternators.Ā How are these fused….is there an internal fuse or are they mounted on the engine? Or not fused at all? Right now,Ā each alternator charges separate Start batteries.Ā I want to combine the P & S Start batteries into a single Start ‘bank’, charged by the Port alternator only.Ā I want to dedicate the Stb alt to the H…
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1 ReplyNovember 30, 2022 at 6:37 pm Never seen a fuse on the alternator output on a QSB 6.7. But that does not mean you don’t have one as many boats have custom OEM wiring. BUT IMO, I’d never share batteries between house loads or engine to engine under normal operation with a electronic engine.. So many batter ways to have both alternators charge the house bank yet charge each start battery automatically yet keep them from talking to each other and not loose the safet…Last Post by:
posted: 1 year ago
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Fitting on underside of QSB6.7 Aftercooler
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago November 15, 2022 at 12:49 am Hi:Ā new-to-me 2019 QSB6.7 480s have the silver-look fitting on the underside of the aftercooler….see attached pic.Ā It looks like a drain fitting with a hose barb….could someone tell me what it really is and how it should be used please? thanks
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2 RepliesNovember 15, 2022 at 7:34 pm It is supposed to be an auto drain for the typical fresh water condensation that occurs in the cold side(input side of the aftercooler). In theory, when the engine is OFF or at very low RPM ( like idle or so) the auto drain valve is open and condensation should drip from it and you may even feel air escaping from it actually blowing out the condensation.<br />Once the engine load is increased, 1/2 to 1 psi or so of boost pressure, it is su…Last Post by:
posted: 1 year ago
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Individual Engine Fuel Burn in VesselView 4
This topic has 2 replies, has 3 voices, and was last updated by
1 year ago
October 8, 2022 at 4:06 am New to me vessel with twin QSB6.7 480’s.Ā Helm equipped with VesselView 4.Ā I can display total fuel burn/hour but for the life of me, I cannot find how to display fuel burn for each individual engine.Ā Could someone please point me right on this? I Thanks in advanceĀ
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in: Cummins Marine Engines
2 RepliesOctober 21, 2022 at 3:54 pm Thanks Tony.Ā I have the VV4 manual and read that carefully:Ā it was not helpful.Ā I finally got hold of a local Mercruiser dealer who has a subcontractor expert in VV.Ā He was super helpful & really knew his stuff, though by his own admission spent most of his time on outboard and gas engine integration, rather than diesels.Ā He said VV4 did NOT display individual engine fuel burn even though it captured this data…as I had found, only…Last Post by:
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Lift Pump leak on 6BTA M3
This topic has 2 replies, has 3 voices, and was last updated by
2 years ago
April 8, 2020 at 9:19 am 6BTA 370hp M-3, CPL 2008. Manual lift pump is leaking when the thumb plunger is operated but not otherwise (no leak when engine is running and vessel underway). No hard-starting or evidence of air leaks. What’s the right approach to fixing this please?
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2 RepliesOctober 11, 2021 at 4:48 am Tony or Paul, I have the same issue. the pump leaks at the plunger. The lift pump plunger came off really easy but I cannot figure out how to disassemble. It looks like it has been pressed together at the factory. Any help is appreciated. Regards, JimLast Post by:
posted: 2 years ago
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Replacing parts in SMX 1730 pump
This topic has 1 reply, has 2 voices, and was last updated by
3 years ago March 22, 2021 at 4:12 pm Wondering if all or any of these parts can be replaced WITHOUT removing the pump itself from the engine (6BTA 370)?: o water seals SMX-1730-WS o wear plate SMX-1730-WP o cam SMX-1730-CAM thanks
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1 ReplyMarch 23, 2021 at 5:07 am Yes, with one caveat – Only the rear half of the waterseal.Last Post by:
posted: 3 years ago
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Leaking Plunger, mech lift pump 6bta M3 CPL2008
This topic has 7 replies, has 4 voices, and was last updated by
3 years ago January 13, 2021 at 5:06 pm The plunger on my Bosch P-7100 mech lift pump leaks when I use it…but it does pump fuel and doesn’t leak when engine is operating. I have removed the plunger assembly (see pics attached) but I cannot figure out how to disassemble to check for an O-ring that I’m guessing needs replacement. Can anyone tell me the part number for the plunger assembly (not the whole mechanical pump) and/or provide an exploded parts diagram for…
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7 RepliesFebruary 8, 2021 at 8:18 pm Great, thanks for the follow-up Paul. If you took any photos during the install please post them.Last Post by:
posted: 3 years ago
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Raw Water Hose Type Recommendation
This topic has 6 replies, has 5 voices, and was last updated by
3 years ago
October 28, 2020 at 5:09 am I am wanting to replace the raw water hose that connects the output side of the gear oil cooler to the heat exchanger on my 6bta 370 Diamonds cpl 2008. The existing hose is 1.75″ and was once clear with spiral wire. What hose type is best? Thanks
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6 RepliesOctober 31, 2020 at 12:16 pm Clear hose with wire is novel in that application! Wire not needed, itās a pressure hose, not likely to collapse. Trident is a trusted name in marine hoses. Call Seaboard parts.Last Post by:
posted: 3 years ago
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4BTA lift pump
This topic has 5 replies, has 4 voices, and was last updated by
4 years ago
April 3, 2020 at 4:42 am One of my lift pumps is leaking fuel when priming (not leaking when engine is running) searching quick serve I can’t find any reference to the part. The engine is also idling a little rough and I’m down 50 odd revs at WOT, any chance the lift pump is letting air into the system? Thanks ESN 46514245
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in: Cummins Marine Engines
5 RepliesApril 14, 2020 at 6:56 pm After a lot of digging I came up with the part number for the Bosch primer pump on the 4BTA-250 engine. Dan I hope this helps you. I came up with the Bosch # 2 447 222 126Last Post by:
posted: 4 years ago
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6bta overheat?
This topic has 13 replies, has 6 voices, and was last updated by
4 years ago
May 21, 2019 at 8:50 am I am new to diesel marine engines but I know they are different than the truck engines I am accustomed to. I have a Maxum 4100 SCR with twin Cummins 6bta 5.9 M3 330’s. I have recently had the after coolers and heat exchangers serviced at a local radiator shop that specializes in marine coolers. Also have a new sea water pump on the starboard engine and new impeller on the port engine. Both engines will reach 2950+ rpms and I normally cruis…
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in: Cummins Marine Engines
13 RepliesJune 10, 2019 at 10:10 am Beautiful spot. As are all of the San Juan Islands and the Canadian Gulf Islands.Last Post by:
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Cummins 6CTA8.3 Battery Replacement
This topic has 4 replies, has 4 voices, and was last updated by
4 years ago
June 3, 2019 at 4:21 pm Looking to replace the 5 batteries in our 2003 420 Sundanceās. In my research the 6CTA8.3ās mention 1250 CCA. Anyone here have inputs on AGM Group 31ās or other batteries recommendations? Thanks very much.
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in: Cummins Marine Engines
4 RepliesJune 5, 2019 at 5:39 pm Yes more are less every 3-4 years. House Deep Cycle is normally 3 yrs as they are working off the inverter. Service twice a year clean and use distilled water only. My inverter is a multi-stage charger so it keeps them charged with out over charge. My older onboard charger stays off unless I have gone through a real deep discharge. Then its on only until batteries are at full charge then off. As Rob said better deal unless hard to get to.Last Post by:
posted: 4 years ago
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QSB 5.9
This topic has 7 replies, has 5 voices, and was last updated by
5 years ago
March 24, 2019 at 4:38 am Iām looking for my next boat. Iāve seen a couple with Cummins Common Rail QSB 5.9ās. Both have about 1250 hrs. Are these good engines? Any pros/cons would be greatly appreciated. Thanks, Bobby
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in: Cummins Marine Engines
7 RepliesApril 3, 2019 at 8:47 pm i Have a formula 40 pc 2008 w qsb 5.9… 875 hrs .. great engines .. reliable strong .. efficient and easy to maintain feel free to email me if you have any questions .. rayLast Post by:
posted: 5 years ago
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6bta weight
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This topic has 22 replies, has 5 voices, and was last updated by
5 years ago March 16, 2019 at 12:08 am Hi guys Further to my port engine fun with the raw water pump replacement.. could any one tell me the complete weight of a 6bta 330 diamond with a zf220a gearbox please. I’ve searched but cannot find the specs. I need it to make sure I’m specing the right engine mount as a replacement as the existing ones has no markings.. I know they are a bushings Inc isolator and I think I know which one. I just have to ensure its the right weigh…
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in: Cummins Marine Engines
March 27, 2019 at 6:57 pm Steve, Sometimes you have to do what you have to do and work around it the best you can.. And sometimes itās a compromise between some things that neither of them are the best solutionā¦ā¦ā¦ā¦ā¦ā¦ā¦So, with all that said, it really comes down to what is INSIDE those tall pedestals and the skin on the outside..I.E.–Just how substantial are they? Plus, how FLAT and how parallel are they fore & aft and side to side with the plane of the engine …
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posted: 5 years ago
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Fuel filter bracket
This topic has 8 replies, has 4 voices, and was last updated by
6 years ago
April 7, 2018 at 7:38 pm Hello everybody, so i start install my remote oil filter on my port motor today and i have a clearance problem. The problem is my fuel filter on the port motor is located on the same side as the oil filter with the fuel lines running across where the new remote oil filter will sit I would like to relocate my fuel filter to the other side of the motor as shown in the pictures that Tony has on this site of the fuel line locations I’ve been s…
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in: Cummins Marine Engines
8 RepliesApril 17, 2018 at 6:19 am Thanks Sean. I’ll send you a private msg.Last Post by:
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Fuel Line Size to/from on-engine filter
This topic has 2 replies, has 2 voices, and was last updated by
April 10, 2018 at 9:45 pm Twin 6BTA 5.9 370’s, Cpl 1975. I have Parker 436-8 hoses from my fuel tanks through my Racors and on to the lift pump. These are 3’6″ long between Racors and the lift pump and have an i.d. of 1/2″ (12.5mm). But the hoses to/from the on-engine fuel filters and the injection pump are Parker 221 FR-8, 4′ 6″ long. This hose has an i.d. of just 13/32″ (10mm). I need to replace the lines between the on-engi…
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2 RepliesApril 12, 2018 at 8:51 pm Thanks Rob!Last Post by:
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Repair Sendure HX raw water outlet
This topic has 13 replies, has 3 voices, and was last updated by
6 years ago August 4, 2017 at 6:53 pm Taking raw water hoses off my Sendure HX, I’ve found the raw water outlet pipe (aft end, up against exhaust riser) to be corroded through at its edge. I’ll take it to a radiator or machine shop for repair…but I’d like to be able to tell them what metal the outlet pipe is made. Any tips for getting this repair done right? (6BTA 5.9 370)
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13 RepliesMarch 1, 2018 at 6:19 pm Looks like a decent repair to me…………..For the future in case you redo it again.. When you have a lot of surface area for what ever you are attaching or repairing lLike those bronze saddles) , then 95-5 soft solder will last to forever.. With very small contact area ( like installed a fish-mouthed bronze barb to the HX, then silver solder or using sil-bronze rod with a TIG works best…. But of course, much will de…Last Post by:
posted: 6 years ago
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Grounding Strap for Air Heater?
This topic has 2 replies, has 3 voices, and was last updated by
6 years ago October 4, 2017 at 11:02 am I removed the air heaters from my 6BTA5.9 370 M-3ās years agoā¦.but I didnāt touch what I assume to be the grounding strap for the air heater, shown highlighted in the attached photo. Is this in fact the air heaterās ground strap? Does it do anything else, or is it safe to remove now the air heaters are gone? Thanks in advance.
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2 RepliesOctober 4, 2017 at 11:40 am If you’re removing the air grid heater assembly, you can remove that strap no problem…Last Post by:
posted: 6 years ago
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Valve Cover Bolt Gasket
This topic has 4 replies, has 4 voices, and was last updated by
September 26, 2017 at 4:28 pm I have a 6BTA 370 hp. I am going to check the valves and I currently have the o-ring gasket for the valve cover bolt. Our local cummins shop says that it has been upgraded to the Isolator type gasket. The bolt looks like the one shown on SBMARs site for the Isolator gasket (bolt with partial threads and shoulder). Is there any difference between the 2 gaskets? Thanks in advance.
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in: Cummins Marine Engines
4 RepliesSeptember 29, 2017 at 3:54 pm I haven’t heard of the ‘isolator bolt’ option before. Is this considered a worthwhile upgrade for 6BTA’s? Does it really make a difference to noise?…or have other benefits?Last Post by:
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Zeus Pods: Good, Bad, Ugly??
