Re: Hollow stem intake valves
Section 10A says "Titanium prohibited". Although that's vague and you don't know if they're referring to valves only or all of valve train. But I know when the Drag Paks came out they had titanium retainers and were allowed one year to remove and replace with steel (I read that anyway). Everyone uses lightweight tool steel retainers for the most part.
Quote:
Originally Posted by SDT1DYI
Titanium valves can not be used but are titanium retainers legal?
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Todd Gross
3323 FS/E,F
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