TwinTurbo.NET: Nissan 300ZX forum - valves labeled 30P :( and valves labeled EG :)....
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Subject valves labeled 30P :( and valves labeled EG :)....
     
Posted by Josh@Z1 on December 08, 2009 at 4:34 PM
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In Reply To Valve Issues (Soft Valves?) posted by Ketshy on December 08, 2009 at 02:33 PM
     
Message Valves from 1990 cars with the 30P label are made of an inferior material causing them to do the exact thing your valves did. Valves from the late 90+ cars would have the EG label. These valves are resistant to this type of failure.
We only use EG valves when building stage 1 or 2 heads.

     
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