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I've asked around the question of how a C-75 can get turned into a C-85. I was lead to the Service Bulletin from Continental dated December 30, 1947 (revised July 9, 1952) that outlines the parts and paperwork Continental required to give the new/updated engine I.D plate. The link to the site is: http://aeronca.com/ServiceLetters/cont_m47_16.pdf In a nutshell it instructs you to send in the original engine I.D plate along with the filled out form (Form AVS-1) that you'd get from Continental and check off (Form ACA-337) from the FAA (CAA at the time) that the work has been done. Continental would then in turn send a new engine I.D. plate with the same serial number as before with the letter "C" appended to it and the engine size stated now as C-85. The question that has since come up is whether or not Continental (now part of Teledyne) still allows and/or supports this to be done. I wanted to ask the group before contacting Teledyne should anyone know of a certain procedure I need follow in dealing with them. Has anyone had experience in dealing with Teledyne concerning these old engines? Doing the work is relatively straightforward. It's just making it all "paper legal" that falls in question. Thanks all, Louis ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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