Jeff, Thanks very much for your information
Bob Stone ----- Original Message ----- From: "Jeff Scott" <jscott.pi...@juno.com> To: <kr...@mylist.net> Sent: Thursday, January 06, 2005 10:26 AM Subject: Re: KR> Conversion > > Most certified aircraft engines that can burn 87 octane Mogas require > nothing other than the STC paperwork. However, there are several caveats. > > If it has a Stromberg NAS carb, you need to ensure that it has the Delrin > needle valve instead of the rubber tipped metal needle valve. The Delrin > needle valve has been the standard for decades, but I have seen the rubber > tipped ones available for purchase and have run across them in service. > > If it has a Marvel Schebler carb, it must have a metal float, although I > think the composite floats should have all been replaced by now. > > There can be compatibility problems with rubberized parts within the fuel > system. > > Some engines shouldn't be run on Mogas. My Lyc O-235-L2C was a 100LL > engine before I installed the higher compression pistons to make it a > O-235-L2C(M). The lower compression Lyc O-235-C is OK to run on 87 octane > Mogas. The small Continentals, A-65 through O-200 are all OK to use 87 > octane mogas in their stock form with the above caveats. > > While there may be some exceptions, I've never seen a mogas approval for a > fuel injected Cont or Lyc engine. > > The Mogas used for aviation may not have any of the oxydizing additives > such as Alcohol or Methyl Ethers which are commonly found in that gas at > many gas stations, especially during the winter months. There are simple > ways to test your fuel for the oxydizers. > > Probably more information than you wanted to know. > > -Jeff > > > -- "Robert L. Stone" <rsto...@hot.rr.com> wrote: > Does anyone know what the procedures are to convert an aircraft engine > such as a continental or Lycoming to use auto gas and if so what auto gas > octane is recommended. > > Bob Stone, Harker Heights, Tx > rsto...@hot.rr.com > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
