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valve cover breathers

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Old Aug 14, 2004 | 02:00 PM
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panchop
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Melting Slicks
 
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From: mesa,az
Default valve cover breathers
what exactly are they doing, can you have to much, not enough? whats the story.
thanks
greg
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Old Aug 14, 2004 | 04:59 PM
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SWCDuke
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Their purpose is to keep crankcase pressure from building up on a racing engine. On a street engine you should run a properly designed PCV system to guarantee purging of blowby so the oil doesn't get diluted.

Duke
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Old Aug 18, 2004 | 07:13 AM
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comp
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From: eville in
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