Forum Topics Started
-
- Cummins Marine Forum Topics
-
-
’91 Cummins 6BTA 5.9 M1 – DC Electrical Upgrad
This topic has 10 replies, has 2 voices, and was last updated by
4 years ago February 3, 2020 at 10:04 am I bought a ’91 Grand Banks trawler in the winter of 2017-18. The boat was lightly used and in relatively good condition. 2000+ hours on the 250 hp 6BTA 5.9s. It’s also mostly original. I’m putting together a DC engine room upgrade as the batteries are tired, the shore power charger is the old non smart ferro resonant with an older separate inverter, and the alternators are small case low output. Existing: Two 8D / one 4D single…
Started by:
in: General Discussion
10 RepliesFebruary 7, 2020 at 8:18 pm I decided to add to my post above as I have been involved a current project for the last 6 months or so related to what you want to do.. I’ve been trying come come up with a “cut above” high output / high duty cycle alternator this has a long term proven record, most modern in design, is readily available , in very high production, NOT CRAZY PRICED like something from Balmar, and can be easily adapted to Cummins engines and…Last Post by:
posted: 4 years ago
-
6BTA5.9 M1 Water Transfer Tube Temperature
This topic has 2 replies, has 2 voices, and was last updated by
5 years ago
November 1, 2018 at 3:11 am I have twin 1991 6BTA5.9 M1 250hp engines in a trawler. About 2020 hours each, run well. Purchased boat December 2017. (see Oct 29 post for more background info). I got some good feedback… posted a question after… never got a response…trying again. I’ve set aside a couple of days and would like to drain/flush/replace coolant on both motors. The water transfer tube under the heat exchanger, after over an hour running at th…
Started by:
2 RepliesNovember 1, 2018 at 3:02 pm Corey, I’ve had the boat less than a year, and have not replaced the thermostats. And based on my experiences/conversations with the previous owner, the local Cummins dealer, and local diesel mechanics, I’d be very surprised if the thermostats were anything but the standard 180F – but I don’t know for sure. That’s why I was asking the question about the water transfer tube cold being on one end and warm on the other…Last Post by:
-
6BTA5.9 M1 Coolant drain and replace
This topic has 3 replies, has 3 voices, and was last updated by
October 29, 2018 at 7:01 pm I have twin 1991 6BTA5.9 M1 250hp engines in a trawler. About 2020 hours each, run well. Purchased boat December 2017. The coolant is a swamp brown green with a slight residue in it (I pulled a small pill bottle sized sample from the tank. I don’t know how old it is and I’d like to change it. I’m not sure but as I understand it the engines have to be run up over 180 F to open the T-stats so the entire plumbing circuit is open a…
Started by:
3 RepliesOctober 31, 2018 at 12:00 am Thanks for the replies. I’m getting when draining and refilling slow and patient is important. And good to know I can run the engines with the filler cap off and add more coolant as needed. It also seems there’s no way to get the T Stat to open (if it did in fact not open) without taking the boat out on the water under load – unless maybe I replace the coolant during the summer when the seawater is warm? If flushing with fresh…Last Post by:
-
Custom Dry Exhaust Wrap
This topic has 9 replies, has 3 voices, and was last updated by
March 8, 2018 at 7:38 pm On the Seaboard Marine site under Tony’s Tips/Articles there’s a series of pictures under the title “Custom Dry Exhaust Wraps”. I attached two of the pictures below. I’d like to wrap the dry exhaust sections on two 6BTA5.9s in that same way. I also attached a picture on one of the sections and wraps I have now, and I’d like to clean them up a bit. (there used to be thin foil/fiberglass blankets over the existi…
Started by:
9 RepliesMarch 11, 2018 at 7:17 am Ok. Thanks for pointing out that there will likely be some heat transfer – rather than more retention – with the foil backing. My thought then is if I apply the foil wrap over the existing wrap (see picture already posted above) I will add to the already present wrap’s heat retention a little more, and get a more easier-to-maintain finish job. And as far you writing “I know the foil face exists” – it may very…Last Post by:
-
Cummins 250hp 6BTA5.9 M1 CCV Installation
This topic has 5 replies, has 3 voices, and was last updated by
March 5, 2018 at 5:41 pm I have twin 1991 Cummins 250hp 6BTA5.9 M1 motors on a trawler style boat, about 2015 hours each. I just purchased the boat this past fall, and am going over the engines and updating as needed. The air filters look like Cummins OEM and definitely need replacing. Although the engine room is well ventilated and isn’t that dirty, and there is a relatively minimum amount of soot/oil on the back side of the alternators, I figure if I’m goi…
Started by:
5 RepliesMarch 9, 2018 at 3:35 pm Ok. Understand the crankcase riser function. Thanks for the explanation. As I just bought the boat this past December and don’t really yet know how much blow-by or oil mist or fumes come from the engines into the engine room and maybe beyond – but do know I need air cleaner/filters – I spoke with Brad and ordered two S&B air filters set up for a CCV system with the fitting installed at the end. In that way I get new filters…Last Post by:
-
’91 Cummins 6BTA 5.9 M1 – DC Electrical Upgrad
