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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
manifold heating ...coolant
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<blockquote data-quote="dan filipi" data-source="post: 108345" data-attributes="member: 54"><p>Understanding why heating the manifold is important is pretty simple really when the fact is, raw liquid gasoline will not produce the burn needed to move the piston.</p><p>Liquid will burn yes but it won't expand when ignited like vapor will.</p><p>Heating the plenum and runners will aid in vaporizing the liquid much like spraying water on a hot frying pan will. Try spraying water on a cold frying pan.</p><p></p><p>Vacuum will make a liquid boil at a lower temperature.</p><p>Gasoline at the normal air pressure around us (unless heated) will not boil.</p><p>Putting the liquid under a vacuum (like below the throttle plate) will cause the gasoline to boil at a much lower temperature. This vacuum/boiling/vaporizing causes the manifold to "give up" it's heat.</p><p>That is why the plenum gets so cold and makes heating it so important.</p></blockquote><p></p>
[QUOTE="dan filipi, post: 108345, member: 54"] Understanding why heating the manifold is important is pretty simple really when the fact is, raw liquid gasoline will not produce the burn needed to move the piston. Liquid will burn yes but it won't expand when ignited like vapor will. Heating the plenum and runners will aid in vaporizing the liquid much like spraying water on a hot frying pan will. Try spraying water on a cold frying pan. Vacuum will make a liquid boil at a lower temperature. Gasoline at the normal air pressure around us (unless heated) will not boil. Putting the liquid under a vacuum (like below the throttle plate) will cause the gasoline to boil at a much lower temperature. This vacuum/boiling/vaporizing causes the manifold to "give up" it's heat. That is why the plenum gets so cold and makes heating it so important. [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
manifold heating ...coolant
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