DIY_EFI Digest Friday, 13 September 1996 Volume 01 : Number 272 In this issue: Re: Radial- Diametral Head See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: "Hans Hintermaier" Date: Fri, 13 Sep 1996 09:23:00 MET Subject: Re: Radial- Diametral Head Hi Todd, > It incorporated what looked like two camshafts, but they were also the > ports and valves as well. > They were basically ball valves, that opened and closed the port from > the head, rotating at 1/4 crank speed I think. The shape of the opening > in the ball valve determined the valve events. > They had these things on a few 4 valve mercedes engines and had them > passing emmissions, but with a 20% increase in overall power. The > torque curves looked great as well. > The only scary thing was the seat. Is was a spring loaded seat, for a > good seal from the combustion chamber that rode on the rotary ball valve > thingy. I could definately see those things getting torn up. But they > "Said" that they had already run them in the 50,000 and 100,000 mile EPA > durability tests and "got by" Alternative valve systems will return in near future, but I won't be the one to develop them. There were many reliable things developed in WW2. The Noratlas had a 14cyl. radial with disc-valves (?). Here in germany car industry will be the last to change anything. They are too conservative. Have a look Zoche aerodiesel web page: http://193.26.97.194 Maybe this will be the future of car diesel also! Regards Hans hiha@xxx.de Munich / Germany ------------------------------ End of DIY_EFI Digest V1 #272 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".