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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 10-27-2019, 01:27 PM
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VCG vs Valve Cover Replacement

My 2008 550i w/ 121k miles appears to require valve cover gasket replacements; my oil consumption has increased and I can see oil crud forming between the covers and the engine. I've reviewed a couple videos describing what's entailed to get at the gaskets for DIY, and I'm not inclined to take on the project myself as I did in the past on my E39's.

My local indie gave me an estimate to do the work and it included automatic preventative replacement of the valve covers themselves with OE covers from BMW. Obviously this adds a big chunk of change. I can understand why he might want to approach it this way to ensure there are no further leaks down the road for which he might be held responsible. I have used this mechanic before and I trust him; so I am not concerned about being ripped off.

But how likely is it the existing covers are warped, and couldn't they be checked for warpage before replacing them?

Anyone have any experience with this either way: replacing covers or not? I just want to get a couple more data-points.
Thx
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  #2  
Old 10-27-2019, 01:33 PM
Toddmori Toddmori is offline
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I would check the surfaces for flatness before replacing. The gaskets are known to leak, but I haven't heard much about the covers failing without extreme heat involved. Pretty sure they are a glass filled plastic or nylon

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  #3  
Old 10-27-2019, 05:35 PM
tstiglich tstiglich is offline
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Keep in mind that the CCV diaphram is integral to the valve cover. I replaced the whole valve cover at 100k for this reason. All gaskets were leaking, and it is a pain in the ass to do. Was worried that the diaphram would go on me before the new gaskets.
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Old 10-27-2019, 06:08 PM
Toddmori Toddmori is offline
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Quote:
Originally Posted by tstiglich View Post
Keep in mind that the CCV diaphram is integral to the valve cover. I replaced the whole valve cover at 100k for this reason. All gaskets were leaking, and it is a pain in the ass to do. Was worried that the diaphram would go on me before the new gaskets.
Ii was able to replace all 3 diaphragms without removing the valve cover on my 2008. The covers just pop off

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Old 10-27-2019, 06:32 PM
tstiglich tstiglich is offline
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May have misspoke then. Not servicable on a 2009 528xi
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Old 10-27-2019, 06:37 PM
Toddmori Toddmori is offline
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Originally Posted by tstiglich View Post
May have misspoke then. Not servicable on a 2009 528xi
There is the difference! The N62 has external covers for them. Basically, if they aren't cracked or warped, they should be good to go. There pricing for them is rather obnoxious

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  #7  
Old 10-30-2019, 04:56 PM
OakTone OakTone is offline
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Originally Posted by Toddmori View Post
Ii was able to replace all 3 diaphragms without removing the valve cover on my 2008. The covers just pop off.

All three? One under a black plastic cover near the front of each valve cover and ó OK, I give up. Where is the third CCV diaphragm? Same engine as yours (N62TU).

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Old 10-30-2019, 05:01 PM
BabyUnicornTaco BabyUnicornTaco is online now
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Originally Posted by OakTone View Post
All three? One under a black plastic cover near the front of each valve cover and ó OK, I give up. Where is the third CCV diaphragm? Same engine as yours (N62TU).

ó
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There are only two diaphragms. One on the drivers side valve cover and one by the front of the intake. Both easy to get to and replace. To answer a previous question, most likely the valve covers themselves are not warped on the N62. Only gaskets and o-rings would be needed to reseal it. As preventative maintenance, timing covers should be done at the same time. Might add an extra hour of work but prevents a headache later.


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Old 10-30-2019, 05:02 PM
BabyUnicornTaco BabyUnicornTaco is online now
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VCG vs Valve Cover Replacement

Quote:
Originally Posted by ZeroDfx View Post
My 2008 550i w/ 121k miles appears to require valve cover gasket replacements; my oil consumption has increased and I can see oil crud forming between the covers and the engine. I've reviewed a couple videos describing what's entailed to get at the gaskets for DIY, and I'm not inclined to take on the project myself as I did in the past on my E39's.



My local indie gave me an estimate to do the work and it included automatic preventative replacement of the valve covers themselves with OE covers from BMW. Obviously this adds a big chunk of change. I can understand why he might want to approach it this way to ensure there are no further leaks down the road for which he might be held responsible. I have used this mechanic before and I trust him; so I am not concerned about being ripped off.



But how likely is it the existing covers are warped, and couldn't they be checked for warpage before replacing them?



Anyone have any experience with this either way: replacing covers or not? I just want to get a couple more data-points.

Thx


Your valve covers are probably not warped. Itís not a known issue for the N62. You would need just gaskets and o-rings. Not a hard job. Just have to make room for removal. If you DIY you should do timing covers at the same time. Might add an hour of work but will save work later. I have done this work.


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  #10  
Old 10-30-2019, 05:24 PM
Toddmori Toddmori is offline
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Quote:
Originally Posted by BabyUnicornTaco View Post
There are only two diaphragms. One on the drivers side valve cover and one by the front of the intake. Both easy to get to and replace. To answer a previous question, most likely the valve covers themselves are not warped on the N62. Only gaskets and o-rings would be needed to reseal it. As preventative maintenance, timing covers should be done at the same time. Might add an extra hour of work but prevents a headache later.


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The 3rd is on the hose between the valve covers

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  #11  
Old 10-30-2019, 05:30 PM
BabyUnicornTaco BabyUnicornTaco is online now
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Quote:
Originally Posted by Toddmori View Post
The 3rd is on the hose between the valve covers

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Thatís the one I mentioned that was near the intake. There are two diaphragms and a fuel vent valve connecting both banks.


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  #12  
Old 10-31-2019, 09:17 PM
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Are the valve covers plastic or metal (aluminum) ?
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  #13  
Old 11-01-2019, 04:36 AM
Toddmori Toddmori is offline
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Are the valve covers plastic or metal (aluminum) ?
Fiber reinforced plastic

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  #14  
Old 11-01-2019, 07:11 AM
pshovest pshovest is offline
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Originally Posted by tstiglich View Post
May have misspoke then. Not servicable on a 2009 528xi
There is an ebay seller offering replacement CVV diaphragms for N52 engines.
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