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On Mon, 2005-11-14 at 21:57, Jim Adney wrote: > On 14 Nov 2005 at 17:25, Russ Wolfe wrote: > > > Mahle is actually making valves with hollow stems and stamped from > > metal. They are in the testing stages right now. They have engines that > > have gone over 100K miles with them. Probably be in production in a > > couple years. The lighter the valve, they higher the rpms for the > > engine. > > Could these be sodium filled? One of they guys I work with has > drilled out motorcycle valves, added a bit of sodium, and welded the > hole shut. The hole is in the head end; the stem end is hardened. I will see if I can get a copy of the old company news letter that the article was in. It was about a year ago. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) '05 KIA Sorento SUV russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~