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On 19 Jan 99, at 15:38, Stan Schaefer wrote: > Now there's some other milling that the performance guys do called > semi-hemi milling, this does increase the chamber volume, usually done > in conjunction with larger valves, high-lift cams and other such > performance mods. Not something that's compatible with stock FI, so > I've never explored it too much.. I've been semi-hemi-ing all my FI heads for about 8 years now. I have about 3 engines out there with this and no problems. All done with std displacement and valves. I just tried it to reduce the CR and keep knock from being a problem. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/