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> 914 engine oil breather, Is it really necessary
recko911
post Feb 17 2011, 12:05 AM
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Is a oil breather filter really necessary on the engine case.
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gothspeed
post Feb 17 2011, 11:41 AM
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Definitely vent! Also make sure you use the factory check-valve, it keeps the crankcase from building too much pressure, which will help prevent oil leaks.
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ChrisFoley
post Feb 17 2011, 12:09 PM
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QUOTE(gothspeed @ Feb 17 2011, 12:41 PM) *

Definitely vent! Also make sure you use the factory check-valve...

Only when the factory injection is retained should the stock valve be left intact. We gut the PCV valve on every breather installation, but still use it as a connection point in most cases. The stock valve is a restriction to good ventilation.
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