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December 17, 2023 at 1:34 pm #157334
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Cummins 5.9s are not know to have oil pressure issues.
What was the oil level in the affected engine when you got back to the dock ?
November 17, 2023 at 10:47 am #156483
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Tom,
I’ve serviced the same after cooler as yours on my engines for the past 15 years the Seaboard way.
I service the coolers every three years. This is after making sure the cooler is greased up the Seaboard way to begin with. The more grease the better IMO.
I pressure tested the first one serviced with my own made up pressure test contraption.
Since the first one serviced, I have not pressure tested since.
And have not had any issue with mis-assembly.
Follow Rob & Tony’s suggestions and use plenty of Alco-MetaLube.
November 17, 2023 at 10:29 am #156482
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Certainly can’t complain about the 6.7 though. Plus 5,000 hrs.
I have the 27 H&H, smaller bro of the 29, with a QSB 5.9 480….
The H&H line of downeast boats are very good keel boats
Good luck with fixing your engine control issue.
Regards,
Bill D
October 7, 2023 at 1:34 pm #155300
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
one more question?
When running on the engine (no generator or charger) is there an isolator between the alternator and both start and house battery banks to keep both banks charged ?
September 18, 2023 at 5:12 pm #154577
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Quantum Double/Double between the twin fuel tanks and the QSB 5.9 480.
From launch of boat after repower with the QSB.
Clean tanks
September 16, 2023 at 1:10 pm #154472
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
This is the QSB 5.9 480 at cruise speed (21-23 mph) last week in my lobster boat (propped max weight to 3440 confirmed).
Always a steady 176F, 2470 rpms, burning 10.5 gals/hr @55% load.
As suggested, a thorough go through of the SWAC and quickly figure out if the engines are cruising in an overload condition. As Rob suggestioned I’d be no more than idling the engines until resolved
Hate to see engines burned up needlessly as I did once to a 6BTA 370 many many years ago.
September 10, 2023 at 4:05 pm #154204
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Your exhaust looks well designed.
Tony’s crew built the custom exhaust for my QSB 5.9 480 lobster boat install. All from 3,000 or so miles away !
17″ above the static water line
gravity drain at dock
September 10, 2023 at 3:46 pm #154202
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
As stated…not much too it.
Remember not to over torque the nut that screws the cap on.
Yes the end caps are the raw water side of the heater exchager.
If you remove the whole heater exchanger from the engine than you’ll be draining anti-freeze coolant.
btw, I used the distal end hx cap to pickup the water source for the PSS shaft seal on my 5.9 480
March 31, 2023 at 5:57 am #145696
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
There must be thousands of boats on the water that will need to upgrade from Tier I to Tier III.
There will be a bonanza in engine sales and replacements.
March 29, 2023 at 6:10 pm #145576
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Back ten years ago or so I owned three brand new 6BTA 370s with gears.
Obtained by Seaboard Marine and “tricked out” before shipping to me.
All three had the fuel coolers removed, Envirovents installed, idler pulley upgrages and greased after coolers from Seaboard.
All three were under propped from hour number one.
I boat up in the northeast with cold waters.
Each of the three 6BTAs from new had very light sheens of fuel in the exhaust flow, hot or cold. In the sunlight.
I always attribured this to unburnt fuel. Mechanical diesels
December 20, 2022 at 9:42 am #140089
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
“smart” on the heak shrink idea
November 2, 2022 at 2:03 pm #138451
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
nobody on this forum has removed a fuel cooler on a QSB 5.9
As Joe would say, “Come on man…..”
btw, I’ve read Tony’s great writeup on fuel cooler removal.
September 16, 2022 at 7:16 am #136802
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
I freshwater flush my QSB 5.9 480 after each use.
The engine is generally shutdown 20-30 mins before flushing.
I cannot see in my mind’s eye why a 30 degree difference in water temp coursing through the SWAC side of the engine could be create a thermal issue.
I can’t sleep if I don’t freshwater flush after each use. 🙂
1 user thanked author for this post.
September 15, 2022 at 2:21 pm #136787
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Thanks for the replies gentlemen !
The QSB 5.9 in my boat has a Wolverine oil pan heater pad plugged in 24/7 when the boat is in the water.
The engine also has a factory drain hose on the bottom aft of the oil pan. My engine install is about dead flat level at the dock. Very little oil came out of the front magnet plug as expected.
I have used a Jabsco Water puppy with neoprene impeller for years pumping oil.
Makes a real quick pump out of 14-15 qts of oil and you’ll be hard pressed to hole the hose of the oil coming out with the oil pan heater.
I’ll post up some pictures next time around
September 15, 2022 at 5:42 am #136736
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
oil/filter change done.
The drain plug was tight.
Small breaker bar took care of the removal.
1 user thanked author for this post.
August 15, 2022 at 6:05 am #135454
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
yes I’ll send the pictures
May 20, 2022 at 6:19 pm #131959
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Understood
May 19, 2022 at 7:25 am #131863
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
I would not attempt to f/w flush the engine without running the engine….I do believe that’s a no no
May 19, 2022 at 6:59 am #131862
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Not sure what you mean ?
Soap? No soap ?
May 14, 2022 at 6:55 am #131657
Bill DesmaraisModeratorVessel Name: Extremist
Engines: Cummins 6BTA 370
Location: Portsmouth, NH
Country: United States
Bubbles
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