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Old 04-29-2015, 11:33 PM
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pishta pishta is offline
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Join Date: Aug 1999
Location: Tustin, CA
Age: 55
Posts: 3,987
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The bi-metal spring diverts heat to the intake stove when its cold and rapidly warms to rotate and deflect the heat toward the exhaust. Prevents iceing of intake but thats never a problem as the intake sits on the exhaust, just aids in COLD weather starts and warm ups. You need it, or block it in the divert (hot) position.
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