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SVT Shelby GT500
IAT2 ranges 40-50* above ambient with HE/fans
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<blockquote data-quote="Bad Company" data-source="post: 15615187" data-attributes="member: 141815"><p>I'm going to ask a few real important questions.</p><p></p><p>Is the SC a positive displacement air pump?</p><p></p><p>If it is a positive displacement air pump, what happens to the air it is displacing/moving while the engine is idling?</p><p></p><p>Yes, I realize that the efficiency range of the SC is low while the engine is at idle. </p><p></p><p>Do you think the volume of air the positive displacement pump is moving is less than or greater than the engines requirements to maintain a stable idle while sitting at a traffic light?</p><p></p><p>If you think the SC throughput in CFM is higher than the requirements of the engine's needs for air in CFM to idle.........what is happening to the excessive volume of air the SC is moving?</p><p></p><p>If the SC is not moving air across the rotors while it is turning with the engine at idle.......are you starving the SC of needed air to cool the rotors of the SC? </p><p></p><p></p><p></p><p></p><p></p><p>The bypass valve opens to allow the excessive air by volume that the SC is pumping to be returned to the inlet of the SC. </p><p></p><p></p><p></p><p></p><p>The bypass valve doesn't bypass the air from the inlet elbow of the SC to the lower half of the intake manifold for the engine to burn. To do this is to completely starve the SC of air. The SC is nothing more than an air pump. It moves air all the time....... regardless of whether or not it is in the efficient RPM range of its pressure/flow maps. </p><p></p><p>If the SC moves air all the time.........where does the air from the SC go, if the bypass valve/system only allows air to flow from the inlet area behind the throttle body of the SC to the lower half of the intake manifold while the engine is idling? </p><p></p><p>Where does the excessive air output of the SC go when the engine isn't using it to make Hp?</p><p></p><p></p><p>What happens when you get in the throttle and go into full boost and bring engine RPM up to 6000 RPM with SC RPM of 18,000 and you take your foot off of the throttle? Under this scenario the SC is very much in its efficient part of the map. How does it move air now? Does it stop moving air? Or does the bypass system allow the excess air to bleed back to the inlet of the SC to be recirculated while the engine is being starved for air under this condition due to the fact the throttle blade is closed? </p><p></p><p>The pump(supercharger) always wants to pump.</p></blockquote><p></p>
[QUOTE="Bad Company, post: 15615187, member: 141815"] I'm going to ask a few real important questions. Is the SC a positive displacement air pump? If it is a positive displacement air pump, what happens to the air it is displacing/moving while the engine is idling? Yes, I realize that the efficiency range of the SC is low while the engine is at idle. Do you think the volume of air the positive displacement pump is moving is less than or greater than the engines requirements to maintain a stable idle while sitting at a traffic light? If you think the SC throughput in CFM is higher than the requirements of the engine's needs for air in CFM to idle.........what is happening to the excessive volume of air the SC is moving? If the SC is not moving air across the rotors while it is turning with the engine at idle.......are you starving the SC of needed air to cool the rotors of the SC? The bypass valve opens to allow the excessive air by volume that the SC is pumping to be returned to the inlet of the SC. The bypass valve doesn't bypass the air from the inlet elbow of the SC to the lower half of the intake manifold for the engine to burn. To do this is to completely starve the SC of air. The SC is nothing more than an air pump. It moves air all the time....... regardless of whether or not it is in the efficient RPM range of its pressure/flow maps. If the SC moves air all the time.........where does the air from the SC go, if the bypass valve/system only allows air to flow from the inlet area behind the throttle body of the SC to the lower half of the intake manifold while the engine is idling? Where does the excessive air output of the SC go when the engine isn't using it to make Hp? What happens when you get in the throttle and go into full boost and bring engine RPM up to 6000 RPM with SC RPM of 18,000 and you take your foot off of the throttle? Under this scenario the SC is very much in its efficient part of the map. How does it move air now? Does it stop moving air? Or does the bypass system allow the excess air to bleed back to the inlet of the SC to be recirculated while the engine is being starved for air under this condition due to the fact the throttle blade is closed? The pump(supercharger) always wants to pump. [/QUOTE]
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IAT2 ranges 40-50* above ambient with HE/fans
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