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Re: [T3] ZZZZZZZippp


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
*******************************

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