It is a very interesting concept. Haven't dug into it enough myself, just scratched the surface. Always enjoyed reading articles on Smokey, thought provoking. The man tried a lot of stuff. Some of the methods used anymore remind me of diesel tech. High fuel pressures to atomize the fuel finer, running intake unrestricted and others. Here is another link for you. Variable compression engine site used to have some really neat graphics on how it worked. http://www.scuderigroup.com/ Enjoy. I don't catch up with Joe as much as would like at only couple times a year. Couple hour drive each way. Probably a good thing at moment. End up working on stuff in his shop when I do get there. Always a good time though.