' air intake temp'
HONDA used to shoot for 100-F year round, to aid fuel vaporization. A thermo-vacuum valve would operate the air bypass valve above the metal chimney, surrounding the exhaust header, which makes the hot air available for mixing with the 'cold' air charge entering the snorkel to the filter element, from its 'ram-air' entrance in the radiator bulkhead.
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Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
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