Replace Oil Cooler Seals...not the oil cooler. - JeepForum.com
 
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post #1 of 12 Old 11-18-2019, 08:36 PM Thread Starter
HankyD
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Replace Oil Cooler Seals...not the oil cooler.

Hi everyone,

I am going to embark on the oil cooler seal job on my CRD in the near future. In the mean time, I am getting all of my resources organized, parts I need, etc.

I just want to be clear here, the oil cooler seals are faulty and need replacing to the upgraded purple seals. The old seals are the culprit.

The oil cooler it self is a robust design and not faulty; it itself doesn't need replacing. However, some CRD owners go ahead and do so while everything is torn apart for peace of mind, etc.

Is this correct?

Thanks,

HankyD

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post #2 of 12 Old 11-18-2019, 09:37 PM
badgerwithhands
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I personally have not read of anyone replacing the cooler. I have done the seals myself and the cooler was/is completely fine. I definitely recommend removing the swirl flaps and motor, port matching the intake manifolds, swirl motor resistor mod, (if you have a EGR delete tune) block off and remove the EGR piping.

07 WK Overland CRD, cargo LEDs, OME HD, MOPAR skids, rack,
future mods: tires, lights, CB, skids,
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post #3 of 12 Old 11-19-2019, 09:16 PM Thread Starter
HankyD
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Badger,

That's good to know regarding the oil cooler, I can spend that money elsewhere.

From a performance stand point, I plan to get a tune, a larger intercooler and a high flow air filter such as a K&N. Regarding tuning, I am probably going to get the GDE Hot Tune and as I live in Canada, I fortunately still can. However, Calibrated Power produces better (performance) numbers and comes with 3 tune built in. GDE can (mostly) shut down EGR function though and disable swirl flaps. Things to think about...

Most people have this set up and from what I understand, most don't send their intake manifolds in to get their swirl flaps removed nor do they get the ports machined matched. It is my understanding that... at this level of performance upgrades, these 2 variables aren't yet a bottle neck. Nice to have? Indeed. But at this level, not yet a bottle neck from what I understand.

Now, if I was getting a bigger turbo and a tune to accommodate for the bigger turbo then naturally, the question reopens itself.

Unless there is data out there that suggests otherwise or perhaps there is something else that I am missing?

Anyone please feel free to chime in with your thoughts and ideas.

Thanks again,

Hanky
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post #4 of 12 Old 11-20-2019, 11:06 AM
badgerwithhands
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I wouldn't send them off for those things either. You have to remove the intake manifolds anyway and, if you're comfortable doing so, have access to remove the flash and port match. I mainly suggest it because you have the access and won't have to remove them again later. Also, not sure if it's possible or not, but removing the flaps means they can't close on you.

07 WK Overland CRD, cargo LEDs, OME HD, MOPAR skids, rack,
future mods: tires, lights, CB, skids,
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post #5 of 12 Old 11-20-2019, 02:18 PM
Grinmaul
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Don't use a K&N filter, its good at filtering out gravel i guess.


I removed the flaps only because i was there, i did not port match. i did have the manifolds hot tanked to remove the carbon from the egr, and installed the egr bypass kit.


It made so much room under the manifolds that i am sure i could do the oil seals again without removing the turbo or manifolds

2 2008.5 WK CRD's, 2005 WK Limited 5.7
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post #6 of 12 Old 11-20-2019, 03:36 PM
dradambbb
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I had the job done in the Spring of this year. It is a significant job to disconnect everything to get to the oil cooler. Given that the cost is relatively low I thought it was better just to replace the whole oil cooler and not just the seals. For reference, here in the United Kingdom the job cost GBP600 and a new oil cooler was GBP100. Also while at it ensure that you replace any dead glowplugs.
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post #7 of 12 Old 11-20-2019, 07:46 PM
caddydaddy
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I did not replace the oil cooler. 33k miles later, no issues. Mercedes even recommends replacing the turbo pedestal when removing it. I just cleaned it out really well.

2007 CRD Limited w/QDII
GDE HOT Tune, Turbo Resonator Delete
2" RC lift
227,000+ miles!
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post #8 of 12 Old 11-20-2019, 08:22 PM
badgerwithhands
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Quote:
Originally Posted by dradambbb View Post
I had the job done in the Spring of this year. It is a significant job to disconnect everything to get to the oil cooler. Given that the cost is relatively low I thought it was better just to replace the whole oil cooler and not just the seals. For reference, here in the United Kingdom the job cost GBP600 and a new oil cooler was GBP100. Also while at it ensure that you replace any dead glowplugs.
That's amazing, pricewise. I was quoted 3300 USD. That is why I did it myself. Americans have been led to believe more in gasoline/petrol than in diesel, even though it runs industries. Trains, semis, heavy equipment, and so on.

07 WK Overland CRD, cargo LEDs, OME HD, MOPAR skids, rack,
future mods: tires, lights, CB, skids,
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post #9 of 12 Old 11-20-2019, 11:05 PM Thread Starter
HankyD
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Actually, the exhaust y-pipe port and polish from CB Engineering looks like it would be more applicable to me. After all, it's where all the exhaust gasses are feeding in to and the openings aren't matched perfectly to the gaskets and these openings feed in to the turbo; I dunno, sounds kinda important to me, lol
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post #10 of 12 Old 11-21-2019, 03:30 PM
dradambbb
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Quote:
Originally Posted by badgerwithhands View Post
That's amazing, pricewise. I was quoted 3300 USD. That is why I did it myself. Americans have been led to believe more in gasoline/petrol than in diesel, even though it runs industries. Trains, semis, heavy equipment, and so on.
That's ridiculous. For a pro it's 4 hours disassembly and 4 hours reassembly. Less that 2 days work for sure. I took my car to a diesel engine specialist and the Polish mechanic doing the job had done so many of these he could do it with his eyes closed, figuratively speaking. These engines were common to Mercedes Sprinter vans, S-class, E-class, ML-class, and probably others. Very common. In fact there was an S-class next to it having an engine transplant for another OM642. I appreciate that in North America you get that kind of values when rebuilding a Hemi but it's different here where to date diesels have ruled. Now with environmental concerns things are changing and hybrids (mostly petrol) are everywhere.
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post #11 of 12 Old 11-21-2019, 07:40 PM
badgerwithhands
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Quote:
Originally Posted by dradambbb View Post
That's ridiculous. For a pro it's 4 hours disassembly and 4 hours reassembly. Less that 2 days work for sure. I took my car to a diesel engine specialist and the Polish mechanic doing the job had done so many of these he could do it with his eyes closed, figuratively speaking. These engines were common to Mercedes Sprinter vans, S-class, E-class, ML-class, and probably others. Very common. In fact there was an S-class next to it having an engine transplant for another OM642. I appreciate that in North America you get that kind of values when rebuilding a Hemi but it's different here where to date diesels have ruled. Now with environmental concerns things are changing and hybrids (mostly petrol) are everywhere.
It took me a while due to after work mechanic-ing. I was working 24 days in a row at the time. I believe I could do it in a day now. I will end up doing removing half of this to port match some and block the EGR (while leaving it in place for visual inspection) and remove the piping for it.

07 WK Overland CRD, cargo LEDs, OME HD, MOPAR skids, rack,
future mods: tires, lights, CB, skids,
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post #12 of 12 Old 11-22-2019, 01:52 PM
terrasmak
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Quote:
Originally Posted by dradambbb View Post
That's ridiculous. For a pro it's 4 hours disassembly and 4 hours reassembly. Less that 2 days work for sure. I took my car to a diesel engine specialist and the Polish mechanic doing the job had done so many of these he could do it with his eyes closed, figuratively speaking. These engines were common to Mercedes Sprinter vans, S-class, E-class, ML-class, and probably others. Very common. In fact there was an S-class next to it having an engine transplant for another OM642. I appreciate that in North America you get that kind of values when rebuilding a Hemi but it's different here where to date diesels have ruled. Now with environmental concerns things are changing and hybrids (mostly petrol) are everywhere.
I would say that, probably even less. Then factor in bolts breaking, bolts stripping and cleaning. Takes a bit longer.

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