Ferrea sodium filled valves aka hollow stem valves

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Sep 15, 2005 | 03:15 PM

Boostage

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From: South Florida

Ferrea sodium filled valves aka hollow stem valves

Anyone have a review on them? I know some German performance cars and z06 corvettes use this technology, its lightweight and undercut for flow, and helps dissipates heat. and being lighter helps when revving very high. if I am not mistaken ITR valves are similar. but am not sure. anyway does anyone have an experince with these valves?

Sep 17, 2005 | 05:36 AM

NJIN BUILDR

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From: Hudson, NH, 03051

Re: Ferrea sodium filled valves aka hollow stem valves (Boostage)

Ferrea said at a seminar that I went to that the valves were developed for race classes that didn't allow titanium.They recommend ti if there are no rules against them.
Glenn

Sep 17, 2005 | 07:58 PM

Boostage

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Re: Ferrea sodium filled valves aka hollow stem valves (NJIN BUILDR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NJIN BUILDR »</TD></TR><TR><TD CLASS="quote">Ferrea said at a seminar that I went to that the valves were developed for race classes that didn't allow titanium.They recommend ti if there are no rules against them.
Glenn</TD></TR></TABLE>

which is lighter?