Hardened Valve Seats

[Dirk Wright]

On Thu, 19 Sep 1996, Gordon Couger wrote:
> >
> I think they make stelite valves for about every thing. We use them alot
> for valves in propane conversions. The standard drill was to run a new
> pickup 5,000 miles to break it in, make the propane conversion, run it
> until needed a valve job and put in stelite valves and seats. At least on
> the exaust valve.

Why would running propane require stellite exhaust valves? Is the 
temperature of combustion that much higher than gasoline? 

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Dirk Wright 					            wright at uspto.gov
"I speak for myself and not my employer."               1974 Porsche 914 2.0
"A real hifi glows in the dark and has horns."            1965 Goodman House
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