Willys Hurricane engine
Encyclopedia
The Willys
F4-134 Hurricane was an inline-4 piston engine and powered the famous Jeep CJ
in the CJ-3B, CJ-5, and CJ-6 models. It was also used in the Willys 473 and 475 pickups, wagons, and sedan deliveries. It replaced the Willys Go Devil engine
which was used in the Military Jeep
and other early Jeep-based models like the Jeepster
.
and Rover. The "F" comes from having one set of valves in the block, like a flat
(or "L") head, and one set in the head, like a modern OHV engine. The reason Willys did this was because they started from an existing L-head block and modified it to put the intake valves in a new, much taller head. This created a very compact combustion chamber and a higher compression ratio, boosting power.
When introduced in 1950, the F-134 with its 75 hp was the most powerful 4-cylinder engine mass-produced in America.
was updated with the F-head to become the F134 in 1950. This engine produced 75 hp at 4000 rpm (although it redlines at 3200 rpm) and 114 lb.ft of torque at 2000 rpm with a 7.5:1 compression ratio. Bore and stroke dimensions were the same as the L-head engine at 3.125" x 4.375" giving 134.22 cu in (2200 cc).
The F4-134 was introduced in 1950 in the new 473 trucks. However, it was not placed in a CJ until the introduction of the CJ-3B in 1953, which had a distinctive high hood to accommodate the much taller engine. The engine remained in production until 1971, after American Motors Corporation
(AMC) purchased Kaiser Jeep.
Applications:
BF-161
The BF-161 had a 3 inch bore and a 3 inch stroke, a one-barrel carburetor
and an output of 90 hp at 4400 rpm and 135 lb.ft of torque at 2000 rpm. It had a displacement of 161.1 cubic inches (2,639 cc). It had a compression ratio of 7.6:1.
2600
The 2600 was essentially the same as the BF-161, but it had two-barrel carburetor and had an output of 130 hp at 4400 rpm and 140 lb.ft of torque at 2000 rpm. The compression ratio remained 7.6:1.
3000
The 3 litre (184 cid) had its stroke increased to 4 inches, and had a displacement of 3,016 cc (184.1 cid). It had a 2-barrel carburetor and an output of 140 hp at 4400 rpm and 161 lb.ft of torque at 2000 rpm. It also had a slightly higher compression ratio of 8:1.
An L-head 6 cylinder from Continental
with a bore of 3.3125" and stroke of 4.375" giving a displacement of 226.22 cuin (3.71 L). Several references show a bore of 3.94" but this is incorrect.
Horsepower rating is 105 hp at 3600 rpm or 115 hp at 3800 rpm, as well as a torque rating of 190 lb.ft at 1400 rpm or at 1800 rpm, depending on the year of production.
Willys
Willys was the brand name used by Willys-Overland Motors, an American automobile company best known for its design and production of military Jeeps and civilian versions during the 20th century.-Early History:In 1908, John Willys bought the Overland Automotive Division of Standard Wheel Company...
F4-134 Hurricane was an inline-4 piston engine and powered the famous Jeep CJ
Jeep CJ
The Willys CJ is a public version of the famous Willys Military Jeep from World War II.The first CJ prototype was introduced in 1944 by Willys, and the same basic vehicle stayed in production through seven variants and three corporate parents until 1986.A variant of the CJ is still in production...
in the CJ-3B, CJ-5, and CJ-6 models. It was also used in the Willys 473 and 475 pickups, wagons, and sedan deliveries. It replaced the Willys Go Devil engine
Willys Go Devil engine
The Willys L134 was a straight-4 automobile engine made famous in the Jeep produced in World War II. The engine displaced with a bore and stroke, a very undersquare design. It was an L-head design, with valves parallel to the cylinders...
which was used in the Military Jeep
Willys MB
The Willys MB US Army Jeep and the Ford GPW, were manufactured from 1941 to 1945. These small four-wheel drive utility vehicles are considered the iconic World War II Jeep, and inspired many similar light utility vehicles. Over the years, the World War II Jeep later evolved into the "CJ" civilian...
and other early Jeep-based models like the Jeepster
Jeep Jeepster
The Jeepster was an automobile originally produced by Willys-Overland Motors from 1948 to 1950.The Jeepster name was revived in 1966 on a new model, the C-101 Jeepster Commando, and American Motors removed the Jeepster name for 1972, ending production after 1973.-VJ:The original Willys-Overland...
.
Design
The Hurricane is one of the few "F-Head" engines, and the only one well known, apart from those produced by Rolls RoyceRolls-Royce Limited
Rolls-Royce Limited was a renowned British car and, from 1914 on, aero-engine manufacturing company founded by Charles Stewart Rolls and Henry Royce on 15 March 1906 as the result of a partnership formed in 1904....
and Rover. The "F" comes from having one set of valves in the block, like a flat
Flathead engine
A flathead engine is an internal combustion engine with valves placed in the engine block beside the piston, instead of in the cylinder head, as in an overhead valve engine...
(or "L") head, and one set in the head, like a modern OHV engine. The reason Willys did this was because they started from an existing L-head block and modified it to put the intake valves in a new, much taller head. This created a very compact combustion chamber and a higher compression ratio, boosting power.
When introduced in 1950, the F-134 with its 75 hp was the most powerful 4-cylinder engine mass-produced in America.
F134
The L134 Go DevilWillys Go Devil engine
The Willys L134 was a straight-4 automobile engine made famous in the Jeep produced in World War II. The engine displaced with a bore and stroke, a very undersquare design. It was an L-head design, with valves parallel to the cylinders...
was updated with the F-head to become the F134 in 1950. This engine produced 75 hp at 4000 rpm (although it redlines at 3200 rpm) and 114 lb.ft of torque at 2000 rpm with a 7.5:1 compression ratio. Bore and stroke dimensions were the same as the L-head engine at 3.125" x 4.375" giving 134.22 cu in (2200 cc).
The F4-134 was introduced in 1950 in the new 473 trucks. However, it was not placed in a CJ until the introduction of the CJ-3B in 1953, which had a distinctive high hood to accommodate the much taller engine. The engine remained in production until 1971, after American Motors Corporation
American Motors
American Motors Corporation was an American automobile company formed by the 1954 merger of Nash-Kelvinator Corporation and Hudson Motor Car Company. At the time, it was the largest corporate merger in U.S. history.George W...
(AMC) purchased Kaiser Jeep.
Applications:
- 1950 Willys-Overland Jeepster
- 1966-1971 Jeepster Commando
- 1953-1968 Willys CJ-3B
- 1955-1971 CJ-5
- 1956-1971 CJ-6
- 1950-1961 Willys Jeep TruckWillys Jeep TruckThe 4-wheel drive Willys Jeep Truck, introduced in 1947 by Willys-Overland Motors, was similar to the Willys Jeep Station Wagon and the VJ-2 and VJ-3 Willys Jeepster. With model designations of 2T and 4T, these trucks were equipped with the 134 cubic inch Go-Devil flathead four-cylinder engine...
- 1950-1961 Willys Jeep WagonWillys Jeep WagonThe Willys Jeep Station Wagon, introduced in 1946 by Willys-Overland Motors is the first mass-market all-steel station wagon designed and built as a passenger vehicle and is arguably the world's first popular sport utility vehicle or SUV The Willys Jeep Station Wagon, introduced in 1946 by...
- 1953 Willys 475A Lark
- 1952-1971 Willys M38A1
F161
The F6-161 Hurricane was an F-head version of the L6-161 Lightning flathead straight six. It was used in Jeepsters and Wagons.BF-161
The BF-161 had a 3 inch bore and a 3 inch stroke, a one-barrel carburetor
Carburetor
A carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
and an output of 90 hp at 4400 rpm and 135 lb.ft of torque at 2000 rpm. It had a displacement of 161.1 cubic inches (2,639 cc). It had a compression ratio of 7.6:1.
2600
The 2600 was essentially the same as the BF-161, but it had two-barrel carburetor and had an output of 130 hp at 4400 rpm and 140 lb.ft of torque at 2000 rpm. The compression ratio remained 7.6:1.
3000
The 3 litre (184 cid) had its stroke increased to 4 inches, and had a displacement of 3,016 cc (184.1 cid). It had a 2-barrel carburetor and an output of 140 hp at 4400 rpm and 161 lb.ft of torque at 2000 rpm. It also had a slightly higher compression ratio of 8:1.
Super Hurricane
6-226An L-head 6 cylinder from Continental
Continental straight six engine
Continental Motors manufactured a line of passenger car engines from the 1920s to the 1960s.-226:The 226 in³ engine was used by Kaiser-Frazer as the Supersonic and by Willys as the Super Hurricane. It was also the standard engine used by Checker taxis until the 1960s...
with a bore of 3.3125" and stroke of 4.375" giving a displacement of 226.22 cuin (3.71 L). Several references show a bore of 3.94" but this is incorrect.
Horsepower rating is 105 hp at 3600 rpm or 115 hp at 3800 rpm, as well as a torque rating of 190 lb.ft at 1400 rpm or at 1800 rpm, depending on the year of production.