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Aren't the Porsche valves made by TRW? I've got used SC, Carrera and 964 valves kicking around. Which, if any, of these are supposed to be sodium filled?
The idea of cutting into a sodium filled valve stem gives me pause for some reason. Is Sodium from a bad neighborhood in the Periodic Table?
-Chris
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'80 911 Nogaro blue Phoenix!
'07 BMW 328i 245K miles!
http://members.rennlist.org/messinwith911s/
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