Copper Beryllium seats work extremely well with Inconnel X750 alloy in
boosted application. I am using this combination on my little turbo
engine, and the same seats with Titanium valves on the N/A motor.
My experience is that in the turbo, other valve seat inserts go away rather
quickly in comparison when exposed to the high exh gas temperatures most of
us experience.
Rick Byrnes
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