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DIY: Do It Yourself
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Old 02-07-2015, 11:18 PM   #1
VladBelsky
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The Permanent M54 CCV Delete

As my summer daily driver sat in the garage, I decided that it was time for a CCV replacement. Inspired by my other E46 (an M56 SULEV model), I decided to do this in an unconventional way; by replacing the plastic valve cover on the M54 with an aluminum one from an M56 engine, and retrofitting the dipstick tube from the M56 engine.

-The M56 valve cover has the CCV built in, as a serpentine chamber that can be opened and cleaned every time the valve cover gasket is changed.

-The M56 dipstick tube doesn't have a second channel to drain oil from the CCV back into the oil pan. It is otherwise the same.

-The valve cover gasket for the M56 is flat, metal-reinforced, and lays right onto the head, rather than being put onto the valve cover first.


Went on eBay and found these.




Bought an M56 valve cover gasket set as well. Then I got to work. Perfect fit.







A comparison of the M54 dipstick tube (left) and the M56 dipstick tube (right):





The M56 dipstick tube uses two O-rings. The bottom O-ring is the same as the M54 dipstick tube O-ring. The part # for the top O-ring is 11437519850.





Capped-off the smaller port on the intake vacuum distributor.


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Last edited by VladBelsky; 08-06-2017 at 12:54 PM.
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Old 02-07-2015, 11:23 PM   #2
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OE M56 valve cover breather hose on (Part # 11157513756)





To top it all off, here is everything with the pretty engine cover. All done with OE parts.


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Last edited by VladBelsky; 02-25-2015 at 08:54 PM.
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Old 02-15-2016, 07:25 PM   #3
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Originally Posted by VladBelsky View Post
OE M56 valve cover breather hose on (Part # 11157513756)


Hey did you happen to notice of the connector is different on this new breather hose, or did you only have to get a new one because of the length (and routing of the hose)?

I'm wondering if my M54 breather hose will connect right onto the M56 cover's "nipple" just the same or not...
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Old 02-16-2016, 03:12 PM   #4
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Originally Posted by rkneeshaw View Post
Hey did you happen to notice of the connector is different on this new breather hose, or did you only have to get a new one because of the length (and routing of the hose)?

I'm wondering if my M54 breather hose will connect right onto the M56 cover's "nipple" just the same or not...
Great thread! I am not sure if the CCV has ever been replaced on my 2002 325i (~128k miles)

I too am wondering about the connection to the M56 valve cover - where does this plug in?
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Old 02-18-2016, 04:10 PM   #5
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I too am wondering about the connection to the M56 valve cover - where does this plug in?
Well earlier in the thread it was pointed out that there is a new shorter CCV breather hose part number that can be used to connect the nipple on the M56 valve cover to the port on the intake manifold.

But I don't have the stock intake manifold anymore because I have the ESS TS2 kit installed. It has its own hose that runs from the stock M54 valve cover to it's PCV. I'm wondering if that same hose will simply connect onto the M56 valve cover, which would mean the "nipple" would need to be the same.

Another question to ask to get the answer I need would be if anyone knows if the new shorter CCV hose has the same connector as our stock M54 CCV breather hose? It's simply a shorter breather hose?
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Old 04-14-2016, 10:58 AM   #6
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Originally Posted by PabloCruise View Post
Great thread! I am not sure if the CCV has ever been replaced on my 2002 325i (~128k miles)

I too am wondering about the connection to the M56 valve cover - where does this plug in?
Quote:
Originally Posted by rkneeshaw View Post
Well earlier in the thread it was pointed out that there is a new shorter CCV breather hose part number that can be used to connect the nipple on the M56 valve cover to the port on the intake manifold.

But I don't have the stock intake manifold anymore because I have the ESS TS2 kit installed. It has its own hose that runs from the stock M54 valve cover to it's PCV. I'm wondering if that same hose will simply connect onto the M56 valve cover, which would mean the "nipple" would need to be the same.

Another question to ask to get the answer I need would be if anyone knows if the new shorter CCV hose has the same connector as our stock M54 CCV breather hose? It's simply a shorter breather hose?
Quote:
Originally Posted by rkneeshaw View Post
Hey did you happen to notice of the connector is different on this new breather hose, or did you only have to get a new one because of the length (and routing of the hose)?

I'm wondering if my M54 breather hose will connect right onto the M56 cover's "nipple" just the same or not...
No, the M54 hose will not fit the M56 valve cover. The M56 valve cover nipple is the same OD as the M54 hose.
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Old 02-08-2015, 09:19 AM   #7
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Old 02-20-2015, 08:29 PM   #8
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Any update?
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Old 02-21-2015, 11:52 AM   #9
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What? M56 valve cover fits onto M54? This is the first time I am reading this
In for final result
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Old 02-21-2015, 02:11 PM   #10
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^^^^ Thats why i'm in here - this works will be getting done by me with a damn quickness!
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Old 02-22-2015, 06:22 PM   #11
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Updated the post. Waiting on one more part until it's complete.
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Old 02-23-2015, 10:58 AM   #12
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Good thing you got the black plastic cover with the valve cover, as it doesn't show up in the BMW parts catalogue anymore, must be NLA.
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Old 02-23-2015, 08:32 PM   #13
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Good thing you got the black plastic cover with the valve cover, as it doesn't show up in the BMW parts catalogue anymore, must be NLA.
It seems to readily available brand-new. Part # 13537515326.

ECS Tuning sells it:
http://www.ecstuning.com/BMW-E46-325...ngine/ES33656/

There's also a used one on eBay right now:
http://www.ebay.com/itm/BMW-E46-03-0...09d9e6&vxp=mtr
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Old 02-24-2015, 02:13 PM   #14
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It seems to readily available brand-new. Part # 13537515326.
That's interesting, thanks for posting. RealOEM doesn't show that part, although it does show the M54 version.
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Old 02-25-2015, 08:47 PM   #15
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That's seriously fvcking brilliant. I wish this worked on the M52.
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oh man I just did my gasket 2 weeks ago, If I saw this mod before it would defenitly go to my engine! Btw , does it fit M52TU?
It would work on the M52TU, since the M52TU is essentially an M54. However, I don't think the M52TU coils would fit, so it would probably require you to upgrade the harness for the coils. The M52 is a completely different animal.

Also, I updated the original post.
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Old 02-27-2015, 01:38 PM   #16
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Originally Posted by VladBelsky View Post
It would work on the M52TU, since the M52TU is essentially an M54. However, I don't think the M52TU coils would fit, so it would probably require you to upgrade the harness for the coils. The M52 is a completely different animal.

Also, I updated the original post.
Not to mention that the FPR on M52TU cars uses vacuum from the CCV.
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Old 04-26-2017, 11:12 PM   #17
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Originally Posted by VladBelsky View Post
It seems to readily available brand-new. Part # 13537515326.

ECS Tuning sells it:
http://www.ecstuning.com/BMW-E46-325...ngine/ES33656/

There's also a used one on eBay right now:
http://www.ebay.com/itm/BMW-E46-03-0...09d9e6&vxp=mtr
Can the breather hose attach to a catch can using the M56 cover? That way more vacuum could be retained. Would that work?
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Old 02-23-2015, 11:35 AM   #18
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Interesting. I still prefer my catch can. Adds extra vacuum to the crankcase.
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Old 02-23-2015, 11:16 PM   #19
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That's seriously fvcking brilliant. I wish this worked on the M52.
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Old 02-24-2015, 10:50 AM   #20
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oh man I just did my gasket 2 weeks ago, If I saw this mod before it would defenitly go to my engine! Btw , does it fit M52TU?
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