TwinTurbo.NET: Nissan 300ZX forum - Oversize valves flow tests has anyone done a comparison
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Subject Oversize valves flow tests has anyone done a comparison
     
Posted by MikeH(Twin GT35BB Incon Z) on May 17, 2003 at 11:04 AM
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Message on the Z head versus stock? I have been doing research and I keep finding that oversize valves can hurt flow at mid and high lift but increase it at low lift. One reason is because the size of the valve itself causes an obstruction. I wonder if anyone has flow tested this ,, maybe SGP has. I am debating whethere I should get it?

     
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