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On 9 Mar 2001, at 10:54, Jim Adney wrote: > On 8 Mar 2001, at 19:51, Russ Wolfe wrote: > > > Ahhhh, another point to bring up..... VW did change their valve seats in I > > think '68. The exhaust seats were changed to "Stelite" <sp>. This was about > > the time that leaded gas was going away. It was also at this time that > > cylinder temperatures started rising due to the leaner emission standards. > > I've never seen mention of a change in the seats, but that doesn't > mean it didn't happen. I've only heard the valve seats referred to as > "hardened." I would think the Bill Fisher book would cover this; I'll > look tonight. The Fisher book refers to the seats as "sintered hardened steel" and doesn't refer to Stellite anywhere that I can find. While I'm pretty sure I remember reading that the exhaust valves have Stellite heads, I can't prove it tonight. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe