| A
            four-cylinder version of the O-360, the O-240 was developed
            jointly by Continental and Rolls Royce.  The O-240 was
            introduced in 1971.
             The IO-240 fuel injection variant began production
            in 1993 and is the standard Teledyne Continental engine for sport
            and trainer aircraft. 
           | 
           | 
          
            
                | 4-cylinder, horizontally-opposed, air-cooled
                piston engine |  
                | Displacement: 240 cubic inches  
                (3.9 liters) |  
                | Bore x stroke: 4.4375 x 3.875 inches |  
             
           |