Quote:
Originally Posted by Ecky
So, Honda chose to keep the valves closed, rather than open, the logic being that the air inside will act as a spring, and the energy used in compression would be mostly recovered during expansion. Leaving them open would force the engine to pump air in and out of the cylinder, resulting in lost energy.
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Is it possible that Honda didn't want the deactivated cylinders draw and blow to interfere with the other cylinders' intake and exhaust? Something that might be avoided by separate intakes for each cylinder?