Ford used stellite valves in alot of there engines starting in the late
70's. There is one down side to stellite valves they can't be reground
when you do your next valve job but they last 2-3 times as long if used
with hardened seats your guides will go first with this combo. That said
I doubt anyone drives their TR enough to wear out a good valve job done
with stellite valves, hardened seats, and bronze guides if your
machinist installs the seats and guides correctly.
Doug Hamilton
1960 TR3A
1963 Fiat Cabriolet
Date: Sat, 03 Nov 2001 23:25:16 -0500
From: Jeff Johnson <mondolux@speakeasy.net>
Subject: Re: stellite valves?
Paul,
To quote the Stellite website, "The most widely used alloy in the family
is
STELLITE, which is based on the ternary system:
cobalt - chromium - tungsten. The composition endows alloys with hot
hardness above 600o C coupled with excellent wear, galling, corrosion
and
erosion resistance. "
I burned a valve on my Tr6 at approx. 20K on the clock. Now that my TR6
has
dropped a couple of lobes on the cam and I had the engine rebuilt,
would I
put stellite valves in my car?- Oh ya, you betcha!
Along with hardened valve seats. Burn a valve again? I don't think so.
Jeff Johnson
'76 TR6 w/ Stellite valves
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