Menasco Pirate

The Menasco Pirate series are four-cylinder, air-cooled, in-line, inverted aero-engines, built by the Menasco Motors Company of Burbank, California, for use in light general and sport aircraft during the 1930s and 1940s. The Menasco engines came in both normally aspirated and supercharged forms, with the supercharged models exhibiting superior performance at higher altitudes, with a relatively small increase in dimensions and weight. The supercharged models had the S suffix added to their designation to show supercharging.

Variants

 * Menasco A-4 Pirate (also listed as Menasco 4A)
 * 90 hp.


 * Menasco B-4 Pirate
 * 95 hp.


 * Menasco C-4 Pirate (Military designation L-365)
 * 125 hp. Compression ratio 5.8: 1, dry weight 300 lb


 * Menasco Pirate C-4S
 * Super-charged 150 hp.


 * Menasco D-4 Pirate
 * 125 hp, compression ratio 5.5:1, dry weight 311 lb


 * Menasco D-4-87 Super Pirate
 * 134 hp,Compression ratio 6:1, dry weight 310 lb


 * Menasco L-365-1: military designation for the C4-4LA
 * Menasco L-365-3: similar to -1 but changes to cylinder heads, lubrication and carburettor

Applications

 * Argonaut Pirate
 * Aeroneer 1-B
 * Great Lakes 2T-1MS
 * de Havilland Canada DH.82C Menasco Moth (Canada, 136 built)
 * Fairchild 22 C7B
 * Gee Bee Sportster Model D
 * Jones S-125
 * Ryan ST
 * Stearman-Hammond Y-1
 * VEF I-17
 * Willoughby Delta 8