| Introduced
            in 1940, the O-235  was Lycoming's second horizontally
            opposed engine; an enlarged version of the successful O-145.
             The O-235 is still one of Textron-Lycoming's best-selling
            piston engines and was the basis of the O-350. 
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                | Horizontally opposed, 4 cylinder, piston engine |  
                | Air-cooled |  
                | Displacement: 233 cubic inches 
                (3.8 liters) |  
                | Bore x stroke: 4.375 x 3.875 inches |  
             
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