wzenheimer Posted September 9, 2009 Share Posted September 9, 2009 Can someone guess this engine? Can't decide if its an O-290 or an O-320. thanks, Chris Quote Christopher Wise Lake Saint Louis, MO Link to comment Share on other sites More sharing options...
Terry Posted September 9, 2009 Share Posted September 9, 2009 My guess would be an O-290. I think all the narrow deck O-320's had plates under the cylinder dold down nuts. To be sure, pull a rocker cover, if it has adjustable rocker arms then it is a 290. If not then a 320. I'm betting on a 290. Terry EAA 221 T.C. A&P Quote Link to comment Share on other sites More sharing options...
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