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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
10 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: 10 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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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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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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Fuel Line Size to/from on-engine filter
This topic has 2 replies, has 2 voices, and was last updated by
6 years ago
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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Stripped Thread in Aftercooler Cap Bolthole
This topic has 4 replies, has 3 voices, and was last updated by
6 years ago September 25, 2017 at 3:50 pm I remove my aftercooler top caps annually to inspect and clean out the raw water tubes. This year, on re-installing, I used new bolts and lock washers. Though I thought I was as careful as ever, I stripped the last/bottom few (aluminium) threads off one aftercooler. I took Tonyās advice, found on that Other Forum from years ago, to try the bolt without the lock washerā¦.and this did allow the bolt to be re-installed and tightened to what see…
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4 RepliesSeptember 26, 2017 at 4:32 am Tony speaks through experience of having these units apart on his benches 7 days a weeks for decades. I speak for how I know that my mind works: “fix & forget ” rather than “wonder & worry”. You have viable options…Last Post by:
posted: 6 years ago
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Garden Hose Coolant Flush?
This topic has 5 replies, has 2 voices, and was last updated by
6 years ago August 20, 2017 at 5:01 pm I change my coolant every 4 years. I know this is over-kill but it works in with my program of dis-mounting HX’s and after-coolers, etc for off-engine servicing and a bunch of other stuff I do at the 4-year mark. I have previously used RESTORE (alternately, RESTORE PLUS) to flush the system before re-filling with new coolant. I’m now persuaded this is a waste of $$ and time….particularly time, as I have to flush repeatedly …
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5 RepliesAugust 24, 2017 at 2:44 am Sounds good and yes the 180’s are the right tstats for your application. Just as in setting up a f/w flush of the raw water side there’s no real right or wrong, just connect up top and drain & collect down low…. try to contain your flush water in something like a clean spackle bucket so you can see the effect of running the flush water through.Last Post by:
posted: 6 years ago
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Rubber Boot for Fuel Solenoid?
This topic has 4 replies, has 3 voices, and was last updated by
6 years ago February 15, 2017 at 4:55 pm 6BTA 370hp M3, CPL1975. Just noticed the rubber boots under the fuel solenoids on both engines have split. Is it necessary to replace these in a dry protected engine room? If yes, can the boot alone be sourced or am I up for a new solenoid? (If anyone has part numbers handy, IĀ“d appreciate hearing it.) many thanks
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4 RepliesMay 19, 2017 at 3:43 pm Good info.. Thanks.. TonyLast Post by:
posted: 6 years ago
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Engine Sitting without Coolant?
This topic has 1 reply, has 2 voices, and was last updated by
6 years ago May 14, 2017 at 7:26 pm Hi: Ā I am about to do my every-4-years (350hrs) coolant flush & replace on my 6BTA5.9 370’s (cpl 1975). Ā This time, I want to take some of the removable coolant pipes and the heat exchanges back home to clean them internally and re-paint externally. Ā I’ll be away from the boat for 2 weeks mucking around with this. Ā Is it OK for the engines to sit that long with no coolant….or should I bung up where necessary and re-fill? Ā I…
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1 ReplyMay 15, 2017 at 6:42 am No issues as long as what residual that will be left sitting within is just the coolant. Ā Shove a rag in any open ports/hoses.Last Post by:
posted: 6 years ago
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Zeus Pods: Good, Bad, Ugly??
