TwinTurbo.NET: Nissan 300ZX forum - Re: Oiling was another problem of the factory Nissan race ca
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Subject Re: Oiling was another problem of the factory Nissan race ca
     
Posted by Dallas DamonZ on June 15, 2002 at 10:07 AM
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In Reply To Oiling was another problem of the factory Nissan race cars. posted by nixit(dallas) on June 14, 2002 at 10:39 PM
     
Message : Local TTZDer, Warren, blew his motor on the high bank of texas motor speedway (well in excess of 120 mph for extended periods of time (30-45 seconds per lap) on the very steep bank). It failed due to all the oil being held down in the pan from cintrifugal forces.

Warren's problem was the right head didn't drain the oil back to the pan because of c-forces & instead it poured into the PCV valve. Just like any time you make a hard left turn, your car will smoke. This left the bottom of the engine light & then it went into oil starvation. I believe Sunbelt went so far as to build drain pipes that go from high points in the sides of the valve covers back down to the pan to combat this problem.

Later

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