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Old 03-02-2012, 10:23 AM   #1 (permalink)
300zxrb26dett
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Another way to reduce pumping losses

Thought I would share this here since this could benefit this forum as well.

Found this while browsing the internet one day. Its a superbike engine, but I have no idea what kind anymore. Those notches between the companion cylinders are designed to reduce pumping losses by allowing the air to move back and forth between cylinders as they move up and down. There was a Porsche engine that also had this but I cant remember where I found it anymore.


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