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On 4 Nov 2001, at 21:08, Dave Hall wrote: > The 1969 TLE Fastback covered the followers:- > This alloy had a bit less graphite, a lot less Va, and more Cu, Mg, Ni > and P. It had been induction hardened to a depth of 0.032". The > average V.p.n of the surface measured 660 with a 5kg load. I thought that Gene Berg told me that the lifters measured about 52 on the Rockwell C scale. The Machinerys Handbook says that VPN 660 is ~Rc 58-59, or that Rc 52 = ~VPN544. The apparent disagreement might well all be in my memory.... - Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org