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You know, I have one of those temp gauges lying around somewhere; thanks for the idea! Back in the 60's the Detroit automakers put a "manifold stove" on many of their cars; some ductwork around one of the exhaust manifolds with a pipe running from it up into the bottom of the air cleaner airhorn. There was a temperature-activated butterfly that directed the air into the air cleaner from the manifold stove until it became warm enough to open the butterfly and block the hot air, opening up the other intake on the airhorn (which usually aspired underhood air that was often quite warm). I think they used a similar arrangement well into the 80's. Of course nobody thought much about fuel economy back in the 60's...
Beaver
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"Life is like a 10-speed bike. Most of us have gears we never use."
-- Linus
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