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  #1  
Old 01-25-2020, 11:58 AM
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CCV replacement without removing intake? M54

As the title says.


My crank case pressure went through the roof and it unseated my VC gasket, pissing oil everywhere. Taking the oil cap off and lots of pressure in the crank case.


I got a new CCV sans hoses from Rock and I'm going to put it in. Can it be done without removing the intake? Can't even see the darned thing.
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  #2  
Old 01-25-2020, 12:18 PM
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It is super easy to take off, and you need to take off all the vacuum lines to clean and check them anyways.
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Old 01-25-2020, 12:31 PM
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I'd not bother with factory CCV.

Do the CCV mod by BavarianE39 and you will be happy.
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Old 01-25-2020, 02:14 PM
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Not exactly what you asked for, but:

this guy 50sKid makes great videos. I followed his series when I did the top end rebuild on my M54. Here is his video for the CCV system:
https://www.youtube.com/watch?v=ZDP8Dma0nUs

And another thing you didn't exactly ask for:
It is possible to lift the intake manifold up out of the way without disconnecting a lot of things. E.g., the fuel system is untouched, most of the electrical connections remain connected, etc. I figured this out when doing my M54 engine work, and used it when I had to get back in there due to leaking o-rings on the coolant pipes (that I had replaced with new). Let me know if you want details.

Knowing what I know, if I had to do it, I'd watch that video for familiarization, and then do a partial intake manifold lift out as described, to get full easy access to all CCV components.

EDIT - Thinking more, I guess that depends on how good/clean/leak-free the rest of your intake is. In my case, everything had already been fully removed, cleaned spotless or replaced with new. If yours is due for replacing gaskets, fixing cracking vacuum hoses, etc., may as well take the full intake manifold off, cleaning fuel injectors, replacing o-rings, etc. If that does not sound like fun, then back to my prior recommendation.
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Last edited by oldskewel; 01-25-2020 at 02:19 PM.
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Old 01-25-2020, 02:19 PM
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Bavauto had a real helpful video on this. ECS Tuning may be hosting it? Search around.
I did mine a while back and with some directions from their video, I didn't have to take off the manifold and I have big hands.

https://www.youtube.com/watch?v=YWXtiCwRH-k
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  #6  
Old 01-25-2020, 06:59 PM
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Quote:
Originally Posted by audiophool View Post
As the title says.


My crank case pressure went through the roof and it unseated my VC gasket, pissing oil everywhere. Taking the oil cap off and lots of pressure in the crank case.


I got a new CCV sans hoses from Rock and I'm going to put it in. Can it be done without removing the intake? Can't even see the darned thing.
the 50s kid video is great and so is that old BAV auto video but you should get the 3 hoses associated with the valve cause they will break and a throttle body gasket since that TB is coming off . If this is your first time ,take your time-next time will be easier.
CN90 above mentioned the BAvarian E39 MOD which i currently have at 800 miles and still at oil starting point at the halfway mark post MOD.You might want to check on this MOD.
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  #7  
Old 01-25-2020, 10:16 PM
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Have done this both ways. Taking off the intake is the way to go. A bit more to take apart but worth it in my humble opinion. I would also replace the hoses. I have done 3 of these and had one hose break each time. And of course the cold weather version.
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Old 01-26-2020, 03:38 AM
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Got the old one off without removing the intake. Intake boots off, DISA off, throttle body off, wiring junction box loosened and pushed away.


Drain tube to the dipstick was full of emulsion. Dipstick drain clogged. All the old hoses broke. Distribution manifold full of emulsion too. Cleaning everything and re-installing after I get a couple of parts that broke.



I think taking the intake off would be a lot of extra work for little benefit. It's a b-atch for sure though. Not easy by any definition of the word.
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  #9  
Old 01-26-2020, 11:44 AM
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The biggest benefit of taking the intake off is for putting it all back together. Getting the new ccv in and the side hose on is a struggle. You have to do most by feel. Good luck, hope it goes well for you.
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  #10  
Old 01-26-2020, 12:12 PM
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^ no doubt. I've had a lot of luck smearing a little silicone grease on the o-rings. Greatly reduces the force needed for assembly.
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