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Technically, thermal energy is a bigger contributor to the complete equation. The flaw in that "bench" test is that with no flow, it will not work at all. The engine will always flow something, though, as long as it is running. It also produces a great deal of heat. Coating piston decks, valve faces, and wrapping primary tubes helps to deliver more of that energy to the turbine, as opposed to heat soaking engine components. Flow is a big part of the end result, but heat enery is bigger. Try flowwing huge air through your turbo using tight primaries and placing it several feet further away. Without insulating that heat, you'll hardly get the turbo to spool. Even if you corrected the pipe size to reduce pressure drop over distance, it still wouldn't do the trick. Heat energy drives the turbo hardest. Wrapping will enhance performance, but it may distress parts more, leading to shorter service life. Pick your poison.
John
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Wood/Anderson Racing Development: j.anderson@wardev.com
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