Willys Go Devil engine
| Go Devil | |
|---|---|
_Motor.JPG) | |
| Overview | |
| Manufacturer | Willys-Overland |
| Combustion chamber | |
| Displacement | 134.2 cu in (2,199 cc; 2.199 L) |
| Cylinder bore | 3.125 in (79.4 mm) |
| Piston stroke | 4.375 in (111.1 mm) |
| Cylinder block alloy | Iron |
| Cylinder head alloy | Iron |
| Valvetrain | L-head |
| Compression ratio | 6.48:1 |
| Combustion | |
| Fuel system | 1-barrel carburetor |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 60 hp (45 kW; 61 PS) |
| Specific power | 0.42 hp/CID |
| Torque output | 105 lb·ft (142 N·m) |
| Chronology | |
| Successor | Willys Hurricane engine |
The Willys L134 (nicknamed Go Devil) is a straight-4 automobile engine that was made famous in the Willys MB Jeep produced during World War II. It powered nearly all the Jeep vehicles built for the U.S. and Allies.[1] It was later used in a variety of civilian Jeep vehicles.
History
In 1940, the Willys Quad was built to compete against the Bantam reconnaissance car for evaluation by the U.S. Army.[2] The two prototype Quads were powered by the Willys “Go-Devil” engine that turned out to be automaker's greatest asset.[2] Willys pilot vehicle was overweight compared to the Army's requirements, but the "Go Devil" engine rated at 55 hp (41 kW; 56 PS) included a heavier transmission, a combination that proved to be beneficial in the long-run for use in cross-country travel.[3]
The engine was developed by Willys' Chief Engineer, Delmar "Barney" Roos, and was the most powerful of the three prototype vehicles evaluated by the U.S. Army for production.[4] Roos took the "less than impressive" 48 hp (36 kW; 49 PS) automobile engine and increased its performance and durability.[5] The specifications by the Quartermaster Corps called for only 85 lb·ft (115 N·m) of torque at the rear axle.[5] The extra power made it the engine of choice for the U.S. Army.[5]
The engine displacement was 134.2 cu in (2,199 cc) with a 3.125 in (79.4 mm) bore and 4.375 in (111.1 mm) stroke, a very undersquare design. It was an L-head design, with valves parallel to the cylinders. Initial power output was 60 hp (45 kW; 61 PS) at 4000 rpm and 105 lb·ft (142 N·m) of torque at 2000 rpm with 6.48:1 compression.[4]
The L134 was phased out by the F-head Willys Hurricane engine beginning in 1950.
Applications
- 1937–1942 Willys Americar
- 1941–1945 Willys MB
- 1944–1945 Jeep CJ-2
- 1945–1949 Jeep CJ-2A
- 1956–1950 Willys Jeep Station Wagon in which it was rated at 63 hp (47 kW; 64 PS)[6]
- 1949–1953 Jeep CJ-3A
- 1948–1950 Jeep Jeepster
- 1950–1952 Willys M38
- 1952–1954 IAME Rastrojero
- 1956–1965 Hotchkiss M201 under licence Willys
References
- ↑ "Willys-Overaland Jeep advertisement". Life 14 (7): 13. 15 February 1943. Retrieved 23 November 2014.
- 1 2 Doyle, David. Standard Catalog of U.S. Military Vehicles (Second ed.). KP Books. p. 28. ISBN 9780873495080. Retrieved 23 November 2014.
- ↑ Zalog, Steven J. (2005). Jeeps 1941-45. Osprey Publishing. pp. 8–9. ISBN 9781841768885. Retrieved 23 November 2014.
- 1 2 Statham, Steve (1999). Jeep Color History. Motorbooks. p. 24. ISBN 9780760306369. Retrieved 23 November 2014.
- 1 2 3 Green, Michael; Stewart, Greg (2005). Humvee at War. Zenith Press. p. 13. Retrieved 23 November 2014.
- ↑ Allen, Jim (2003). Jeep Collector's Library. Motorbooks, MBI Publishing. p. 227. ISBN 9780760314869. Retrieved 23 November 2014.
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