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Cummins:C Series -
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Aftercoolers |
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Thu Nov 19 09 10:26 PM |
Nov 13 2009
06:48 PM |
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Vic
I recently pulled my aftercoolers for service and was a bit dismayed to say the least. Between the slugging to get the cores out and the visible corrosion on the casing I knew there was going to be so..... |
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Nov 19 2009
10:26 PM |
#4 |
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Rhc
Very nice pics.
Great patience with reshaping and blending the jb welding back to the original surface. |
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Cummins:C Series -
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Soot |
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10
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Wed Nov 18 09 4:26 AM |
Nov 16 2009
03:41 PM |
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Maineboater
I suppose this topic has been beat to death but please bear with one more query. I have gone through the archives extensively but haven´t seen anything about the following. I have soot from the Cummin..... |
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10 Responses....
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Nov 16 2009
04:47 PM |
#1 |
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Paul Foulston
A)Not calibration, forget that.
B)Do NOT mess with timing, you will end up with burned pistons.
C)Cummins (magic magnets) rep sounds as knowledgeable as mechanic who suggests messing about with ..... |
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Nov 16 2009
04:51 PM |
#2 |
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Ski in NC
Also post what rpm you cruise at, and what rpm you get at full power. |
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Nov 16 2009
05:14 PM |
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Maineboater
WOT both engines is 2600 checked with an electronic tach and mark on the viscous damper pulley. Will have to get the CPL when I get home.
Thanks. |
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Nov 16 2009
07:08 PM |
#4 |
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Bruce M
has this always happened? Are they up to normal op temp? That 2600 is actual loaded reading? What rpm are you running when you get the soot? Are you fully on plane? |
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Nov 16 2009
09:11 PM |
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Maineboater
It is very much worse if bogged down not up on plane. Temps are a bit on the low side with the dash guages at 180 but are up in the 185-190´s with an IR guage. Tend to cruise at 2100 rpm which is well..... |
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Nov 16 2009
09:13 PM |
#6 |
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Maineboater
Addendum--2600 is WOT when fully loaded under way. |
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Nov 16 2009
10:44 PM |
#7 |
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Bruce M
Tony hasn’t responded so I´ll stick my neck out before the expert corrects me.
Those aren’t smoky or sooty engines, I own two.
From your description it sounds like you don’t know much about the ..... |
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Nov 16 2009
11:42 PM |
#8 |
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Jeff Bennet
Endorsing Bruce M´s comments, start with the air filters, which is also the cheapest place to begin. The OEM paper element filters can look clean while holding a lot of salt crystals and stuff.
Had ..... |
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Nov 18 2009
03:37 AM |
#9 |
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Maineboater
Actuallly I have cleaned the air coolers per Tony´s instructions. Also put on new air filters. Don´t believe it to be either of those problems. |
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Nov 18 2009
04:26 AM |
#10 |
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Ski in NC
Two thoughts:
1) If you prop a little lighter so it runs at 2700 full power, then cruise at 2200 instead of 2100 the engines will likely create less soot. There will be more air in the cylinder f..... |
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Cummins:C Series -
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Class Action Suit |
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26
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Mon Nov 16 09 9:51 PM |
Nov 3 2009
04:39 PM |
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Vic
it appears that a final judgement was issued in the settlement of the class action in Cerdes V Cummins. according to the settlement website; cumminsmarinedieselsettlement.com, the class has 6 months f..... |
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Nov 15 2009
05:56 PM |
#17 |
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Frank J. Foster
I love these kind of posts, they make me think……. I get it, salt water at 80F or less going through after cooler works better than 190F coolant. Denser air charge makes more power. But salt wat..... |
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Nov 16 2009
12:06 AM |
#18 |
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Paul H Foster
Frank , FTW my salt water aftercoolers failed after 15+ years woulds have lasted longer If I serviced them the right way
Paul F. |
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Nov 16 2009
03:15 AM |
#19 |
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Jim Bohn
A seawater aftercooler for a modest size engine (350 - 400 hp) will be cooling 700 - 800 CFM of intake air, and it drop the temperature of that air by 200 degrees F or more.
What kind of air condit..... |
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Nov 16 2009
01:36 PM |
#20 |
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Tomas Kempe
The after-coolers are the weakest point on a Diesel, I can not come to any other conclusion. The history involves destroyed engine, law-suits right and left and what is the remedy, a drain valve, new ..... |
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Nov 16 2009
02:21 PM |
#21 |
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Tony Athens
Tomas,
100% of every problem associated with the saltwater cooled aftercoolers is 100% from the lack of proper maintenance.. It starts with poor assembly practices, and then amplified by the lack ..... |
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Nov 16 2009
02:27 PM |
#22 |
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Vic
Although I’ve not been able to find the specific details of the original claim I´m guessing the water ingestion issue is not as simple as condensation. Condensation remaining in the aftercooler would/..... |
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Nov 16 2009
02:31 PM |
#23 |
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Vic
Tomas a keel cooling system will not work on a 35knot boat. as the water speed increases the effeciency of heat transfer between the two fluids is lost, never mind that a keel cooler might very well c..... |
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Nov 16 2009
05:20 PM |
#24 |
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Frank J. Foster
My intention with the post was purely for fun, with just a little cynicism on state of the art. However, I disagree with the comment about the compressor requirements being larger than the engine. U..... |
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Nov 16 2009
09:05 PM |
#25 |
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Jim Bohn
Hi Frank,
I was pretty sure you were kidding around, but there are non technical folks who read these posts and they can get the wrong idea. When half the US population is scientifically/mathemati..... |
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Nov 16 2009
09:51 PM |
#26 |
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Frank J. Foster
Yes Jim, The post was meant for pure entertainment value. I keep cracking up every time I think about it though. Twisted humor I guess. |
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Cummins:C Series -
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Diesel School |
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1
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Sat Nov 14 09 12:10 AM |
Nov 13 2009
03:38 PM |
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Barneson
Does anyone know of any diesel seminars / training sessions in general or specific to Cummins? Looking for some basic diesel knowledge, maintenance training etc... Would like it to be anywhere from ..... |
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Cummins:C Series -
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Oil in inlet air crossover tube |
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6
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Fri Nov 13 09 2:58 AM |
Oct 25 2009
01:24 PM |
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370express
Recently when removing my aftercoolers on my 99 6CTA 8.3´s for a cleaning job for the first time, "bought the boat June 09"I noticed oil with a tar like consistency in the inlet air tube whe..... |
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Cummins:C Series -
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Exhaust Riser |
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4
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Thu Nov 12 09 8:02 PM |
Nov 8 2009
07:13 PM |
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Vic
I´ve pulled the exhaust risers off for the first time after 7 years of service for inspection. they appear to be in good working order just looking at them visually on the dock. they are S/S from a lo..... |
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Cummins:C Series -
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Preheater |
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23
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Wed Nov 11 09 8:31 AM |
Nov 9 2009
01:30 PM |
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Barneson
New to diesel engines. Buying a Silverton 42c with the 450C engines. It has oil pan heaters which I understand are very good for start up. The preheat for the ignition is not working on both engine..... |
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Cummins:C Series -
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Black Box |
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0
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Fri Nov 6 09 11:06 AM |
Nov 6 2009
11:06 AM |
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[DELETED BY AUTHOR]
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NO Responses....
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Cummins:C Series -
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Fuel Lines |
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1
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Thu Nov 5 09 1:08 AM |
Nov 5 2009
12:48 AM |
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Bluefin
Im installing a recon c series. Can i get by with 3/8 fuel line or do i need 1/2 inch? |
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Cummins:C Series -
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Aftercoolers |
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1
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Tue Nov 3 09 10:36 PM |
Nov 2 2009
05:12 PM |
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Vic
my annual PM service is getting done over the next couple weeks. every year one of the items i service is the aftercoolers. the last 4 seasons i´ve flushed the raw water side with Barnical Buster and ..... |
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Cummins:C Series -
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Possible Salt Intrusion of Aftercooler |
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2
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Fri Oct 30 09 8:00 PM |
Oct 25 2009
01:29 AM |
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Boatingdirect
I just completed a full overhaul of my aftercoolers on my 2002 6CTA 8.3 engines with 950 hours. It appears that I did not get the o ring in properly as the lower portion of the cooler is leaking. Pr..... |
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Cummins:C Series -
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480CE Surging at cruising speed |
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9
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Wed Oct 28 09 1:08 AM |
Oct 16 2009
07:26 PM |
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Cameron McDowell
Hello,
I have a 480CE in a planing hull. This is a new problem that just devolped. While running at any RPM above 1400 or so the engine constantly surges. For instance at 1900 RPM the fuel burn jum..... |
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Cummins:C Series -
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Pencil zinc length |
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5
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Mon Oct 26 09 1:53 PM |
Sep 18 2009
10:38 AM |
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Threadfin
Can some one please give me the length of the Pencil zincs for the Heat Exchanger and After Cooler on a 450C motor?
Thanks |
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Cummins:C Series -
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Saltwater cooling system |
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6
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Wed Oct 21 09 1:02 PM |
Oct 15 2009
02:09 PM |
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Freeport
I was reading about "Rydlyme Marine Descaler" for restoring or cleaning the saltwater side of the cooling system. Does anyone have experience with this process? |
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Cummins:C Series -
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My 480ce stalls when shifted |
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12
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Mon Oct 19 09 2:55 PM |
Mar 17 2009
03:24 AM |
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Top Gun
I have a pair of 2004 Cummins 480ces on my 1986 Hatteras 41 with ZF 286a with 1.72 to 1 ratio and 26 x 28 props.
Engines have 800 hours.
The starboard engine stalls when shifted into reverse 30 % ..... |
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