 |
03-25-2023, 07:16 PM
|
#1
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
Looking for Aftercooler for Cummins 6CTA
Mine is all pitted right up to the o-ring sealing surfaces so time to replace. Bundle fails the pressure soap test as well.
Cummins and SMX are way out on these and I want to get the boat operational again. I have good caps and can get the bundle, but the housing is elusive. I am hoping someone has one languishing on a shelf or wrecked engine somewhere....
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
03-25-2023, 09:28 PM
|
#2
|
Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 19,142
|
Good luck! I have one on emergency order with Cummins and they predict about 100 days as of a week ago. I guess supply chain problems. However in Cummins defense in the last week or so I have placed 2 different orders with them both coincidentally on Friday at 4PM. I received each order in 1 day on Saturday with free shipping.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
|
|
|
03-25-2023, 09:50 PM
|
#3
|
Senior Member
City: San Diego
Vessel Name: North Star
Vessel Model: Lindell 36
Join Date: Jun 2020
Posts: 428
|
If you can’t wait a good machine shop could cut a bore in the housing and bond in an aluminum sleeve. Not ideal but I would think it would last a couple years or at least until the next service or you can get a new one. Bond the sleeve in with JB weld or other suitable epoxy with a few thousands gap.
|
|
|
03-25-2023, 09:53 PM
|
#4
|
Guru
City: Long island
Vessel Model: Eastern
Join Date: Aug 2018
Posts: 614
|
If you can get the bundle , you could have the housing welded up. Then cut back down to size. It’s not that difficult to have done. It’s the same as boring a cylinder
|
|
|
03-26-2023, 01:33 AM
|
#5
|
Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 19,142
|
I think they had the core available, not absolutely sure. Call 800-CUMMINS.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
|
|
|
03-26-2023, 10:25 AM
|
#6
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
I think I can get the bundle, not sure about welding since we don't know the exact metal used? I don't have a lot of knowledge about welding, esp repair vs fabrication
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
03-26-2023, 01:38 PM
|
#7
|
Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 2,901
|
There are probably after market after coolers available. In the past, with commercial sized engines, I found it usually cheaper to have heat exchangers and other parts custom built than pay the OEM price.
|
|
|
03-26-2023, 01:46 PM
|
#8
|
Guru
City: Gooding ID/Wrangell AK
Vessel Name: Silver Bay
Vessel Model: Nordic Tug 42-002
Join Date: Sep 2012
Posts: 973
|
Depending on your use why not bypass it? 99% of my operations are without any boost, so the input air temperature and output temperature are not much different and a lot of the time it is cold enough the air heater doesn’t shut off (that’s why I pulled the fuse on it). I talked with my diesel guy and he didn’t think it was a bad idea and wouldn’t hesitate to do it as long as you kept out of the turbo. I always keep that in the back of my mind if that happens to my aftercooler while waiting for a replacement.
With your Hinckley that probably means running at hull speed, but gets you on the water until you get a replacement. I run my 6CTA at 1200-1400 rpm which gets me 7-8 knots. The only time I get into the turbo is to verify the cooling system is working correctly.
Tom
|
|
|
03-26-2023, 02:05 PM
|
#9
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
I would be happy to consider aftermarket if I could find one. Most outfits make HX, and oil trans coolers, but not AC
SMX is developing one, but having trouble with the quality of the castings..
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
03-26-2023, 02:07 PM
|
#10
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
Quote:
Originally Posted by tpbrady
Depending on your use why not bypass it? 99% of my operations are without any boost, so the input air temperature and output temperature are not much different and a lot of the time it is cold enough the air heater doesn’t shut off (that’s why I pulled the fuse on it). I talked with my diesel guy and he didn’t think it was a bad idea and wouldn’t hesitate to do it as long as you kept out of the turbo. I always keep that in the back of my mind if that happens to my aftercooler while waiting for a replacement.
With your Hinckley that probably means running at hull speed, but gets you on the water until you get a replacement. I run my 6CTA at 1200-1400 rpm which gets me 7-8 knots. The only time I get into the turbo is to verify the cooling system is working correctly.
Tom
|
Not a terrible idea at all, but I moved to this boat specifically so that I can get 10-12 knots when I want it...
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
03-26-2023, 09:07 PM
|
#11
|
Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 2,901
|
I don't know Cummins well, but there are new and used aftercoolers on ebay.
Check www.alibaba.com
Many Cummins parts and some complete engines are made in China. Probably why the long wait.
|
|
|
03-27-2023, 04:39 AM
|
#12
|
Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 9,797
|
Quote:
Originally Posted by OCEANA
Not a terrible idea at all, but I moved to this boat specifically so that I can get 10-12 knots when I want it...
|
I had to bypass an after cooler a few tears ago for about one month. The 6C after cooler adds about 15% of the last HP as turbo boost climbs above 15 psi or so.
By keeping your boost low, monitor the EGTs and shoot each cylinder exhaust with an IR gun you should be easily able to keep the one engine running ok. Especially with the other engine as a template for comparison. Consult with SBar for the rationale of AC bypass as a check.
What are your thoughts as to the reasons for pitting and corrosion on the housing? A possibility is the PO doing an in place acid cleaning. Arcs idea on welding the housing is another SBar check, maybe they've done it before.
|
|
|
03-27-2023, 09:12 AM
|
#13
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
Quote:
Originally Posted by sunchaser
I had to bypass an after cooler a few tears ago for about one month. The 6C after cooler adds about 15% of the last HP as turbo boost climbs above 15 psi or so.
By keeping your boost low, monitor the EGTs and shoot each cylinder exhaust with an IR gun you should be easily able to keep the one engine running ok. Especially with the other engine as a template for comparison. Consult with SBar for the rationale of AC bypass as a check.
What are your thoughts as to the reasons for pitting and corrosion on the housing? A possibility is the PO doing an in place acid cleaning. Arcs idea on welding the housing is another SBar check, maybe they've done it before.
|
Well, I only have the one engine. The pitting and corrosion I suspect is from lack of maintenance and attention from the PO on a 25 year old AC. It is possible it was over zealously cleaned at some point. In the records there was some corrosion reference of the AC and HX about 10 years ago. I have fixed it for the future in two ways, first I disassemble and relube (with Tony's ALCO metal lube) AC/HX every two years, not a terrible job once you pull them out. Second, I put SBMARs SMX freshwater flush caps on the groco strainers. This is new for me, so I am very interested to see how it works over time.
I will ask SBMAR about the welding option, but they didn't mention during my last call to them.
Thx
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
03-31-2023, 04:08 PM
|
#14
|
Veteran Member
City: Channel Islands, CA
Vessel Name: New Adventure
Vessel Model: McKinna 48PH
Join Date: Sep 2018
Posts: 53
|
Quote:
Originally Posted by OCEANA
I put SBMARs SMX freshwater flush caps on the groco strainers. This is new for me, so I am very interested to see how it works over time.
|
I'm lucky, Tony and SBMAR are my neighbors. I added fresh water flush to both my Diamond 450's three years ago. They still look new inside. Just changing zincs at this point. I flush EVERY time I run the engines.
|
|
|
04-17-2023, 02:19 PM
|
#15
|
Veteran Member
City: Dark Harbor Maine
Vessel Name: SOU'WESTER
Vessel Model: Hinckley Talaria 42
Join Date: Sep 2019
Posts: 33
|
Quote:
Originally Posted by Hornloaded
I'm lucky, Tony and SBMAR are my neighbors. I added fresh water flush to both my Diamond 450's three years ago. They still look new inside. Just changing zincs at this point. I flush EVERY time I run the engines.
|
This is great to hear. Do you just connect a FW hose and run it for a few minutes? I heard caution might be needed with pressurized water, so I was considering a gravity feed of about 5 gallons FW after each use.
__________________
SOU'WESTER
Hinckley Talaria 42 T42014
Home Port: Dark Harbor Maine
Range: East Coast of North America & Caribbean
|
|
|
 |
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Trawler Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|