I would think that there is a "typo" here. The statement was made that "switching from 100LL to any avgas....." The word "autogas" may be the right word. In certified aircraft that are switched over to auto fuel, there is nothing special done to the carb or the engine. Of course, this is usually only allowed on engines that use 80/87 octane. There may be a few exceptions to this as I believe a few 91 octane conversions are allowed, but still there are no mods done to the carb.
One thing that is NOT allowed with any auto fuel use in aircraft is using any fuel that contains alcohol. There is a simple test that can be done to determine if auto fuel contains any alcohol. There may be airframe problems that cause fuel flow interruptions or vapor lock to occur with the auto fuel. To cure these problems, an electric pump may have to be installed near the tanks to push fuel to the main pump or to the carb in the case of gravity feed systems. In short, most engines should run reasonably well on autofuel if all other things are equal. John Sickafoose A&P, EAA Tech counselor Naples, Fl -------------- next part -------------- An embedded message was scrubbed... From: "Colin & Bev Rainey" <crain...@cfl.rr.com> Subject: KR>Octanes List-Post: krnet@list.krnet.org Date: Sun, 14 Mar 2004 22:59:05 -0500 Size: 3320 Url: http://mylist.net/private/krnet/attachments/20040314/debefdfc/attachment.eml
