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Discussion Starter · #1 ·
hi guys ...I`ve had some tests done on some so called uprated valves that are bigger than standard,and the metalology test came back as soft compound steel grade poor...now the flow rate on a standard head is good for over 500bhp anyway but i wanted to know about the issues,if any with keeping standard valves ..has anyone ever suffered from failure of standard valves on a car over 500bhp..
kind regards
 
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