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Old Jul 7, 2024 | 09:20 PM
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onehundred80
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Joined: Apr 2006
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From: Ontario
Default Re: Valve cover breather bubbles aluminum?

Originally Posted by nickwe21
Hi everyone!

Is this a real issue when that happens to your breathers? Or valve covers?

I don't know why that's happened to a low mileage car. Do they sell these "new"? Is it necessary? Does this get worse? Why is this happening?
Would love to hear your opinion!

I have worked in the die casting business for a while and have seen similar patterns where the metal has not cooled enough before the the core and cavity were opened or that area of the mold was not cooled sufficiently enough.
This left the surface molten for a second or so
 
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