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cracked inner valve cover, common?

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Old 05-31-2008, 02:35 PM
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Default cracked inner valve cover, common?

I just noticed when looking in the oil filler cap that there is a hairline crack going across the inside of my VC. Should I be worried?
Old 05-31-2008, 02:45 PM
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Default It's not a valve cover. It's a cam cover. That said, there should be a plastic baffle below the oil

filler cap. Wipe it off and feel it. I doubt that you have any problems with the cam cover.

Part 21 in this diagram:

<img src="http://pictureposter.audiworld.com/15624/aancamcovergasketandbolts.jpg">
Old 05-31-2008, 02:52 PM
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Default I'd remove/replace it before it falls apart and clogs up your oil sump.

<center><img src="http://pictureposter.audiworld.com/88819/p1020486.jpg"></center><p>
Old 05-31-2008, 05:43 PM
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I removed them on both S4's I've owned to speed up and reduce mess when adding oil.
Old 05-31-2008, 10:12 PM
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So your saying its not a vital part? If I can get by without it I will pull it for now
Old 05-31-2008, 10:27 PM
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Not vital as long as the filler cap has a good seal on it.
Old 06-01-2008, 05:09 PM
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I left mine out when I did my refresh of the top of the motor
Old 06-02-2008, 02:50 PM
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Default It's there as an anti-frothing measure

The baffle is there as an anti-frothing measure.

In the winter if you make lots of short trips and the engine doesn't warm up it reduces the amount of frothing that will form in the valve cover when water condensation becomes whipped into the oil.

The '87 Fox I had many years ago came without the baffle and adding it significantly reduced frothing in the winter when I drove only a few blocks to university all week. Mind you, driving long enough to let the engine come up to temperature and boil off excess moisture through the PCV system will also do the trick. )

Dave
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