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HybridZ

bigger valves


Guest Anonymous

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Guest Anonymous

I am about done on rebuilding my heads (porting and polishing) have done alot flow testing. Trying to decide if a 1 MM increase in seat and valve size will get me that much increase in airflow to warrant the expence. Does anyone have any first hand experience. The engine is a VG30. But results from other engines might influence me in taking the plunge.

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