The

Toyota is a Japanese Multinational corporation, multinational Automotive industry, automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on August 28, 1937. Toyota is the List of manuf ...

K series is an

inline-four engine A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft. The majority of automotive four-cylinder engines use a straight-four layout ( ...

that was produced from 1966 through 2007. It is a two-valve

pushrod engine An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines, where the va ...

design. It was originally built from the Toyota Kamigo plant in

Toyota City , formerly known as Koromo, is a Cities of Japan, city in Aichi Prefecture, Japan. , the city had an estimated population of 426,162 and a population density of 464 people per km2. The total area was . It is located about 50 minutes from Nagoya ...

factory in Japan. All K series are non-crossflow engines – the inlet and

exhaust manifold In automotive engineering, an exhaust manifold collects the exhaust gases from multiple cylinders into one pipe. The word ''manifold'' comes from the Old English word ''manigfeald'' (from the Anglo-Saxon ''manig'' anyand ''feald'' old and ref ...

s are on the same side. They have

cast iron Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...

blocks and

aluminium alloy An aluminium alloy ( UK/IUPAC) or aluminum alloy ( NA; see spelling differences) is an alloy in which aluminium (Al) is the predominant metal. The typical alloying elements are copper, magnesium, manganese, silicon, tin, nickel and zinc. There ...

heads, with a

crankshaft A crankshaft is a mechanical component used in a reciprocating engine, piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating Shaft (mechanical engineering), shaft containing one or more crankpins, ...

supported by five

main bearing A main bearing is a bearing in a piston engine which holds the crankshaft in place and allows it to rotate within the engine block. The number of main bearings per engine varies between engines, often in accordance with the forces produced b ...

s. K series motors have both

hydraulic tappet A hydraulic tappet, also known as a hydraulic valve lifter or hydraulic lash adjuster, is a device for maintaining zero valve clearance in an internal combustion engine. Conventional solid valve lifters require regular adjusting to maintain a ...

or hydraulic valve lifters, solid lifters and 1.5 ratio rockers with an adjustment thread for

tappet A tappet or valve lifter is a valve train component which converts rotational motion into linear motion in activating a valve. It is most commonly found in internal combustion engines, where it converts the rotational motion of the camshaft into ...

clearance. 7K engines were released with only the hydraulic valve lifters from factory, whereas 4K and 5K engines were made with both hydraulic and solid lifters (depending on year and which model vehicle.)

K

The 8-valve

OHV OHV may refer to: * Overhead valve engine * Off-highway vehicle, aka off-road vehicle * Off-roading * California State Parks California State Parks is the state park system for the U.S. state of California. The system is administered by the C ...

K was produced from 1966 through 1969. A similar K-B was produced from 1968 through 1969, the -B designates twin carburettors. Thus equipped, the engine produces at 6600 rpm. The Publica SL received this more powerful version. Applications: *

Toyota Corolla The is a series of compact cars (formerly Subcompact car, subcompact) manufactured and marketed globally by the Japanese automaker Toyota Motor Corporation. Introduced in 1966, the Corolla was the best-selling car worldwide by 1974 and has bee ...

(KE1x) *

Toyota Publica The is a small car manufactured by the Japanese company Toyota from 1961 until 1978. Conceived as a family car to fulfill the requirements of the Japanese Government's "national car concept", it was the smallest Toyota car during that period a ...

(KP3x)

2K

The eight-valve

2K was produced from 1969 through 1988. The cylinder bore and stroke was . Output in 1978 was at 5800 rpm, and at 3800 rpm. In 1983, New Zealand received a version with at 5800 rpm, while Europe received a version with at 5600 rpm, both with a maximum torque of at 4000 rpm. Applications: *

/1000 (KP30/KP36) *

Toyota Starlet The is a subcompact car manufactured by Toyota from 1973 until 1999, replacing the Publica, but retaining the Publica's "P" code and generation numbering. The first generation Starlet was sold as the Publica Starlet in some markets. In Japan ...

3K

The eight-valve

overhead valve An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines, where the v ...

3K was produced from 1969 through 1977. Cylinder bore and stroke was . The 1969 through 1975 3K-B was a twin-carburetor version. The

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

-spec 3K-C (1977–1979) and 3K-H were other available versions. ;Applications: *

Toyota Corolla (E20) The Corolla E20 was the second generation of cars sold by Toyota under the Corolla nameplate. Launched in May 1970, it featured " coke bottle styling" and had a longer wheelbase. The front suspension design was improved greatly, using a swa ...

* Toyota Corolla (E30) *

Toyota Kijang The Toyota Kijang is a series of pickup trucks, station wagons and light commercial vehicles produced and marketed mainly in Southeast Asia, Taiwan, India and South Africa by Toyota between 1976 and 2007 under various other names. The vehicle ...

/first generation Toyota Tamaraw *

Toyota LiteAce The Toyota LiteAce and TownAce are a line of light commercial vehicle, light commercial and derivative minivan, passenger vans produced by the Japanese car manufacturer Toyota. These vehicles originally utilized the cab over, cab-over-engine co ...

(KM10) *

(later pickups and vans received the desmogged 3K-HJ engine) *

* Toyota TownAce (KR10) *

Daihatsu Charmant The is a subcompact car built by Daihatsu. It was succeeded by the Applause two years after Charmant production ended. The Charmant was heavily based on the E20/E70 Toyota Corolla platforms; model changes paralleled those of the Corolla. All C ...

(A10) * Daihatsu Delta 750 (KB10) ;Specifications:

3K-R

The 3K-R engine, also known as the 137E, was a special version of the standard 3K fitted to the Toyota Starlet (KP40) for use in touring car racing in Japan. The engine was developed by TOM’S in 1974 and was one of their first major developments as a tuner for Toyota. The 3K-R has a 16 valve dual overhead camshaft cylinder head with a compression of 13:1 and was fuelled by a Nippon Denso built mechanical fuel injection system. The engine was also bored out to 1.3 L (1293 cc) and had a

dry sump A dry sump system is a method to manage the lubricating motor oil in Four-stroke engine, four-stroke and large Two-stroke engine, two-stroke Reciprocating engine, reciprocating internal combustion engines. The dry sump system uses two or more o ...

oil system. The engine produced at 9000 rpm.

4K

The 4K was produced from 1977 through 1989. Cylinder bore and stroke was . It was an 8-valve OHV engine. In 1980, the 4K produced at 5250 rpm. From 1983 through 1984, output was at 5600 rpm and at 3600 rpm. The 1981 and 1982 California-spec 4K-C produced at 5200 rpm and at 3600 rpm. Torque was up to at 3400 rpm for the

fuel injected Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of a fuel injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All co ...

1982 through 1984 4K-E. The Japan-spec 4K-U produced at 5600 rpm and at 3600 rpm in 1982. Available in hydraulic and solid lifter configurations Applications: * Toyota Corolla (E70) *

Toyota Liteace The Toyota LiteAce and TownAce are a line of light commercial vehicle, light commercial and derivative minivan, passenger vans produced by the Japanese car manufacturer Toyota. These vehicles originally utilized the cab over, cab-over-engine co ...

* 1977–1979 Daihatsu Delta 750 (KD11)

5K

The 5K was produced from 1983 through 1996. Typical output is at 5600 rpm. Bore and stroke is . It was available with either 4- or 5-speed manual transmissions. Like the smaller 4K model, it uses hydraulic lifters as well as solid lifters for the pushrod. Applications: * 1983.08-1987.10 Toyota Carina Van (KA67V 'Van') 5K-J * 1983.05-1987.08 Toyota Corolla Van (KE74V) 5K-J * 1983.10-1987.12 Toyota Corona Van (KT147V 'Van') 5K-J, at 5,200 rpm *

''KR27'' Van *

''KM36'' Van at 4800 rpm, at 3200 rpm * Toyota Kijang/Tamaraw * Toyota TownAce ''KR41'' Van * Toyota Forklift (late 1980s-early 1990s model)

7K

The 7K was first introduced in 1983. Cylinder bore and stroke was . Output was at 4600 rpm and at 2800 rpm while the EFI version which can be found in Toyota Kijang KF80 produces at 4600 rpm and at 3200 rpm. The Engine was available with a 5 speed manual & 4 speed

automatic transmission An automatic transmission (AT) or automatic gearbox is a multi-speed transmission (mechanics), transmission used in motor vehicles that does not require any input from the driver to change forward gears under normal driving conditions. The 1904 ...

. Available in both fuel injected and carburetted configurations, the 7K produces much more power and torque compared to the other K engines however it is a lot less 'rev happy' due to having such a long stroke. 7K-E is available in KR42 Townace SBV vans (1997–2007) using a large G52 5 speed gearbox (same bellhousing to box pattern as W55), or automatic. Applications: * Toyota Kijang/Tamaraw FX/Revo * Toyota LiteAce/TownAce

K

2K

3K

3K-R

4K

5K

7K

References

See also