Willys Lightning engine
The Lightning engine is a Willys straight-6 produced in the 1940s and 1950s.[1] The flathead engine featured four main bearings and solid valve lifters.[2]
The engines were used in the Willys Jeep Station Wagon, other Jeep-based vehicles, and Willys sedans.
L148
[edit]The L148 version displaced 148.5 cubic inches (2.43 L) and was rated at 70 horsepower (52 kW; 71 PS).[3] This was the smallest displacement six-cylinder engine when introduced in 1947 in the Willys Station Wagon.[3] The bore was 3 inches (76 mm) and its short 3.5-inch (89 mm) stoke enabled the engine to achieve high revolutions given its flathead design.[3]
Applications:
- 1947-1950 Willys Jeep Station Wagon
- 1948 Willys-Overland Jeepster[4]
L161
[edit]The L161 version displaced 161 cubic inches (2.64 L) and was rated at 75 horsepower (56 kW; 76 PS).[5] Introduced in April 1950, the engine featured a higher compression ratio of 6.9 to 1, and a larger 3.125-inch (79 mm) bore.[3][5]
Applications:
- 1950-1951 Willys Jeep Station Wagon
- 1950 Willys-Overland Jeepster
- 1952-1955 Willys Aero-Lark[6]
- 1953-1955 Willys Aero-Falcon[7]
Replacement
[edit]The F-head Hurricane engine was introduced in 1950, a significant upgrade to the Lightning. The valve configuration was changed for better power and efficiency. In 1954, the 6-226 "Super" Hurricane was introduced.
References
[edit]- ^ "Car Willys MB: car specifications and history of creation". en.autoclassics.us. Retrieved 8 September 2025.
- ^ "1949 Willys Models Described In Detail". autohistorypreservationsociety.org. Retrieved 17 September 2025.
- ^ a b c d Allen, Jim (2004). Jeep Collector's Library. MotorBooks. p. 227. ISBN 9780760319796. Retrieved 17 September 2025 – via Google Books.
- ^ "About Willys Vehicles - Jeepster (VJ)". kaiserwillys.com. Retrieved 17 September 2025.
- ^ a b "1953 Willys Aero (brochure)". lov2xlr8.no. Retrieved 17 September 2025.
- ^ "A World-Famous Family: each a leader in its field (advertisement)". Life. Vol. 33, no. 13. 29 September 1952. p. 40. Retrieved 17 September 2025 – via Google Books.
- ^ "Two things Willys is known for (advertisement)". Life. Vol. 34, no. 17. 27 April 1953. pp. 143–143. Retrieved 17 September 2025 – via Google Books.
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