6bta Aftercooler core

The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
See posts with no answers
L

larman

Senior Member
Joined
Nov 29, 2017
Messages
241
Location
United States
Vessel Name
Livin The Dream
Vessel Make
Sea Ray
Pulled out my starboard after cooler disassembled and the core literally slid right out. Anyway I’m concerned with the core. I have had the boat for three years and this is the first time I have serviced this unit. Let me know what you think.
IMG_5557.jpeg
 
Last edited:
Clean it up and put it back on. Aside from a few bent fins, looks good.
 
Great info here about servicing your after coolers. See details about greasing it for easy removal next time. Since you don't know the history and the fact it has visible damage I would have it pressure tested. If it fails you might have to rebuild the engine so fairly cheap and more peace of mind.https://www.sbmar.com/tonys-tips/
 
READY said:
Great info here about servicing your after coolers. See details about greasing it for easy removal next time. Since you don't know the history and the fact it has visible damage I would have it pressure tested. If it fails you might have to rebuild the engine so fairly cheap and more peace of mind.https://www.sbmar.com/tonys-tips/
Click to expand...
Yes have read all of that. I was shocked that it just slid out with my hand. No tools needed.
 
Well, the PO must have serviced it at some fairly recent time. Mine took 13 tons of pressure to get the core out of the housing. My PO never serviced it. I would clean it up and reassemble it. Then pressure test it and make sure it will hold about 25PSI or so overnight. If it doesn’t hold pressure try reassembling it and retest. If it still doesn’t hold pressure it may be bad.
 
These cores are $3700 each at sbmar. I don’t have $7400+ to replace. I have just about 1000 hrs on the engines. I know a failure can be catastrophic. Was hoping to get a year or two more out of these.
 
Yes, they aren’t cheap. Last year I bought a complete aftercooler and a core for the other engine. But I suspect that they had never been serviced and the boat is a 1998. Cilen it up and then pressure test the aftercooler. It can be difficult to get the pressure test done. The hoses were tough to get sealed up. Use soapy water and a spray bottle to look for leaks. I have a lot of different hoses and rubber caps to make a pressure tester but I finally found a combination that would seal up.
 
best way to test.
2 aluminum plates with red rubber on top of each end.
use 4 all thread to clamp down
install pressure gauge and air inlet through the top plate.
Fill with air . Turbos generate 40 lbs of pressure. So test in that range.
Spray fins with soap solution and look for air bubbles.
I takes a little to make the assembly , but you need to do this service 2-3 years. Once its made it easy to use. I let my specialty testing rig go to the new boat owner when i sold the boat.

Copied the design form Tony Athens

www.sbmar.com

Testing a Cummins Marine Aftercooler

Testing a Cummins Marine Aftercooler
www.sbmar.com www.sbmar.com
 
There are always more than 1 way to skin a cat. Looks great.
make sure the clamp towards the center is on the smooth ring. Make sure you have a valve after the air chock to hold the pressure and release the pressure.
 
I was going to try to make this.
View attachment 159657
img_5456-png.159658

Greg QS said:
There are always more than 1 way to skin a cat. Looks great.
make sure the clamp towards the center is on the smooth ring. Make sure you have a valve after the air chock to hold the pressure and release the pressure.
Click to expand...
Any thoughts on these $1000 after coolers from China:

www.alibaba.com

High Benefits Salt Water Cooled Aftercooler For Air Compressor Marine 6bta Engine - Buy Salt Water Cooled Aftercooler,Aftercooler For Cummins Marine 6bta Engine,Aftercooler For Marine 6bta Engine Product on Alibaba.com

High Benefits Salt Water Cooled Aftercooler For Air Compressor Marine 6bta Engine - Buy Salt Water Cooled Aftercooler,Aftercooler For Cummins Marine 6bta Engine,Aftercooler For Marine 6bta Engine Product on Alibaba.com
www.alibaba.com www.alibaba.com
 
Probably who makes them for cummings . We don't make **** anymore. The site says unavailable.

I have bout from mr cool make high grade stuff.

Coolers - CUMMINS After Coolers - After Coolers

Mr. Cool Sells Marine Coolers, Anodes, Freshwater Cooling Kits, Fuel Filters and Exhaust Products for Every Make, Model and Year. From Mercruiser to Volvo, Mr Cool has the cooler you need in-stock and ready to ship today.
www.mrcool.us www.mrcool.us
 
You must log in or register to reply here.

Similar threads

B
1995 Cummins 6BTA 5.9 M2 Advice
Replies
2
Views
578
Comodave
Comodave
A
John Deere aftercooler
Replies
5
Views
1K
Almad
A
T
PARTS FOR SALE
Replies
7
Views
612
TIMBO
T
RickyD
3208 Port engine still getting salt water into the coolant.
2
Replies
33
Views
3K
RickyD
RickyD
B
Need "Obsolete Parts, 1989 Onan MDKD Diesel Genset with a Kubota diesel eng.
Replies
9
Views
2K
GPused
G

Latest posts

Back
Top Bottom