The

Willys Willys (pronounced , "Willis" ) was a brand name used by Willys–Overland Motors, an American automobile company, founded by John North Willys. It was best known for its design and production of World War II era and later military jeeps (MBs ...

F4-134 Hurricane was an

inline-4 A straight-four engine (also called an inline-four) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The vast majority of automotive four-cylinder engines use a straight-four layout (with the ...

piston engine A reciprocating engine, also often known as a piston engine, is typically a heat engine that uses one or more reciprocating pistons to convert high temperature and high pressure into a rotating motion. This article describes the common featu ...

and powered the famous

Jeep CJ The Jeep CJ models are a series and a range of small, open-bodied off-road vehicles and compact pickup trucks, built and sold by several successive incarnations of the Jeep automobile marque from 1945 to 1986. The 1945 Willys Jeep was the world' ...

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 The Willys L134 (nicknamed Go Devil) is a straight-4 automobile engine that was made famous in the Willys MB and Ford GPW Jeep produced during World War II. It powered nearly all the Jeep vehicles built for the U.S. and Allies. It was later used ...

that was used in the MB Jeep and other early Jeep-based models like the Jeepster. This engine was also built by

Mitsubishi The is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group historically descended from the Mitsubishi zaibatsu, a unified company which existed from 1870 ...

for their license-built Jeep, as well as other applications.

Design

The Hurricane was based on the earlier Go-Devil

flathead engine A flathead engine, also known as a sidevalve engine''American Rodder'', 6/94, pp.45 & 93. or valve-in-block engine is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as ...

. To get more power from the engine, the induction system was changed from the Go-Devil's side-valve configuration to an inlet-over-exhaust configuration, or "F-head". This allowed the valves to be larger and the combustion chamber to be smaller, improving flow and increasing the

compression ratio The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the stati ...

. The compression ratio rose from 6.5:1 in the Go-Devil engine to 7.5:1 in the Hurricane engine, although a version of the Hurricane engine was made with a 6.9:1 compression ratio.

F134

The L134 Go Devil was updated with the F-head to become the F134 in 1950.

Brown Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing or painting, brown is usually made by combining the colors orange and black. In the RGB color model used ...

, p. 74. This engine produced a gross output of at 4000 rpm and of torque at 2000 rpm with a 7.5:1 compression ratio. The gross power and torque outputs fell to and respectively when the engine had a 6.9:1 compression ratio. Bore and stroke dimensions were the same as the L-head engine at " x " giving .

, p. 236 The F4-134 was introduced in 1950 in the Jeep Truck. Vehicles with this engine were given the model designation 4-73. This engine 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 Corporation (AMC; commonly referred to as American Motors) was an American automobile manufacturing company formed by the merger of Nash-Kelvinator Corporation and Hudson Motor Car Company on May 1, 1954. At the time, it was the ...

(AMC) purchased Kaiser Jeep. Applications: * 1950–1961

Willys Jeep Truck The Willys Jeep Truck is a truck made by Willys-Overland Motors from 1947 to 1965. The styling and engineering of the Jeep Truck was based on Willys' existing vehicles, the Willys Jeep Station Wagon and the Jeep CJ-2A. Production The Jeep Tr ...

* 1950–1961

Willys Jeep Wagon The Willys Jeep Station Wagon, Jeep Utility Wagon and Jeep Panel Delivery are automobiles produced by Willys and Kaiser Jeep in the United States from 1946 to 1964, with production in Argentina and Brazil continuing until 1970 and 1977 respectivel ...

* 1950

Willys-Overland Jeepster The Jeepster is an automobile originally produced by Willys-Overland Motors from 1948 to 1950. It was developed to fill a gap in the company's product line, crossing over from their "utilitarian" proto SUVs and trucks to the passenger automo ...

* 1952–1971

Willys M38A1 The Willys MD, formally the M38A1 Truck, Utility: 1/4 ton, 4x4, or the G758 by its U.S. Army Standard Nomenclature supply catalog designation, was a four-wheel drive, military light utility vehicle, made by Willys and Willys Motors / Kaiser Jee ...

* 1953 Willys 475A Lark * 1953–1968 Willys CJ-3B * 1955–1971 CJ-5 * 1956–1971 CJ-6 * 1965-1967 DJ-5 * 1966–1971

Jeepster Commando The Jeepster Commando is an automobile which was first produced by Kaiser Jeep in 1966 to compete with the International Scout, Toyota Land Cruiser and Ford Bronco. Four different models were available: a pickup truck, convertible, roadster and ...

F161

The F6-161 Hurricane is an F-head version of the L6-161 Lightning flathead straight six. It was used in the Model 685 Station Wagon. BF-161 The BF-161 has a inch bore and a inch stroke, a one-barrel

carburetor A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meteri ...

, and an output of at 4400 rpm and of torque at 2000 rpm. Its displacement features a compression ratio of 7.6:1. 2600 The 2600 was essentially the same BF-161 engine made in Brazil by Willys-Overland's subsidiary, but it had two one-barrel carburetors (simultaneously opened) and had an output of at 4400 rpm and of torque at 2000 rpm. The compression ratio remained 7.6:1. 3000 The 3-liter version is almost identical to the BF-161 engine with the stroke increased to giving it a displacement of . With a 2-barrel carburetor it produced at 4400 rpm and of torque at 2000 rpm. It also had a slightly higher compression ratio of 8:1. It initially used a different head with removable intake manifold. Later, after Ford acquired Willys-Overland do Brasil, they reverted the engine to its former head design with integral intake manifold, improved cooling between cylinders 5 and 6 and installed a side-mounted oil filter, instead of the front-mounted, hose connected arrangement used by Willys. Applications: * 1961–1962

Willys Aero The Willys Aero was a line of passenger cars manufactured first by Willys-Overland and later by Kaiser-Willys Corporation from 1952 through 1955. It was also produced in Brazil from 1960 to 1971. US production The father of the Aero was Clyde P ...

* 1963–1971

2600 * 1960-1974 Willys-Overland

Jeep Jeep is an American automobile marque, now owned by multi-national corporation Stellantis. Jeep has been part of Chrysler since 1987, when Chrysler acquired the Jeep brand, along with remaining assets, from its previous owner American Moto ...

and

Rural Willys In general, a rural area or a countryside is a geographic area that is located outside towns and cities. Typical rural areas have a low population density and small settlements. Agricultural areas and areas with forestry typically are descri ...

* 1968–1971

Willys Itamaraty Willys (pronounced , "Willis" ) was a brand, brand name used by Willys–Overland Motors, an American automobile company, founded by John Willys, John North Willys. It was best known for its design and production of World War II era Willys M38A1 ...

3000 * 1972-1974

Ford Maverick Ford has marketed the following automobiles models using the Ford Maverick nameplate: * The Ford Maverick (1970–1977), a compact car sold in North America and Brazil during the 1970s * The rebadged Nissan Patrol Y60 sold by Ford Australia under ...

six-cylinder version in Brazil

Super Hurricane

1955 Jeep Willys Utility Wagon 2013 FL AACA-h

The 6-226 "Super Hurricane" was an L-head 6-cylinder

Allen Allen, Allen's or Allens may refer to: Buildings * Allen Arena, an indoor arena at Lipscomb University in Nashville, Tennessee * Allen Center, a skyscraper complex in downtown Houston, Texas * Allen Fieldhouse, an indoor sports arena on the Unive ...

, p. 101. from

Continental Continental may refer to: Places * Continent, the major landmasses of Earth * Continental, Arizona, a small community in Pima County, Arizona, US * Continental, Ohio, a small town in Putnam County, US Arts and entertainment * ''Continental'' ( ...

with a bore of inches and stroke of inches, giving a displacement of . Horsepower rating is at 3600 rpm or at 3650 rpm, as well as a torque rating of at 1400 rpm or at 1800 rpm, depending on the year of production.

Mitsubishi versions

Mitsubishi built a version of the Hurricane from 1954 as the JH4 (69 hp), mostly for use in their license-built version of the

. They later developed a

overhead-valve An overhead valve (OHV) engine, sometimes called a ''pushrod engine'', is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with earlier flathead engines, where the valves were located bel ...

diesel version of the same, called KE31. This was also turned into a 3.3 liter six-cylinder version with the same internal dimensions, producing , which was named KE36. These diesel engines were used in the Jeep, but also in a number of light to medium-weight trucks and buses.

References

{{Reflist

Hurricane A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depend ...

Gasoline engines by model Straight-four engines Straight-six engines