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Author Message   Patches Posted on Wednesday, October 14, 2009 - 03:54 pm:        Coates CSRV High compression engine with patented rotary valve system http://www.youtube.com/watch?v=pDsRa4eT7co   Slaughter Posted on Wednesday, October 14, 2009 - 04:34 pm:        Patents are nearly expired. Cool idea but heads have to be GYNORMOUS to get volume.   Slaughter Posted on Wednesday, October 14, 2009 - 04:36 pm:        It IS by the way a cool idea but at the time (back when he was starting out) the materials available for the valves wouldn't tolerate the wear. Interesting to re-visit the concept with more updated materials. I love the idea of NO valve floating and if you bust a valve chain or anything in the valve train, the motor just stops - NO valve/piston wreckage!

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