After an early flirtation with

V-twin engines A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders share a common crankshaft and are arranged in a V configuration. Although widely associated with motorcycles (installed either transversely or longit ...

Mazda , commonly referred to as simply Mazda, is a Japanese multinational automotive manufacturer headquartered in Fuchū, Hiroshima, Japan. In 2015, Mazda produced 1.5 million vehicles for global sales, the majority of which (nearly one m ...

's small

cars A car or automobile is a motor vehicle with wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods. The year 1886 is regarded as t ...

of the 1960s were powered by

OHV 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 ...

straight-2 and

straight-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 ...

engines. This family lasted from 1961 until the mid-1970s. Today, Mazda's keicars use

Suzuki engines is a Japanese multinational corporation headquartered in Minami-ku, Hamamatsu, Japan. Suzuki manufactures automobiles, motorcycles, all-terrain vehicles (ATVs), outboard marine engines, wheelchairs and a variety of other small internal co ...

. It was produced at the Hiroshima Plant in

Hiroshima, Japan is a Prefectures of Japan, prefecture of Japan located in the Chūgoku region of Honshu. Hiroshima Prefecture has a population of 2,811,410 (1 June 2019) and has a geographic area of 8,479 km² (3,274 sq mi). Hiroshima Prefecture borders Okayama ...

AA

The engine was a two-stroke, water-cooled straight-2 engine used in the Mazda Chantez and Mazda Porter ''kei'' car and truck unique to Japan from 1972 - 1976. The displacement is , producing and of

torque In physics and mechanics, torque is the rotational equivalent of linear force. It is also referred to as the moment of force (also abbreviated to moment). It represents the capability of a force to produce change in the rotational motion of th ...

DA/DB

The

water-cooled Cooling tower and water discharge of a nuclear power plant Water cooling is a method of heat removal from components and industrial equipment. Evaporative cooling using water is often more efficient than air cooling. Water is inexpensive and non ...

OHV straight-4 DA engine, used in the 1962 P360 Carol had a tiny bore and stroke. This was one of the smallest production four-cylinder automobile engines in history, only beaten by Honda's I4 unit used in the T360 truck. The engine's small size was dictated by

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

kei car Kei car (or , kanji: , "light automobile", ), known variously outside Japan as Japanese city car or Japanese microcar, is the Japanese vehicle category for the smallest highway-legal passenger cars with restricted dimensions and engine capacit ...

rules which offered special status to vehicles with engines displacing less than . Mazda's tiny OHV was the only four-cylinder in the class in the 1960s, but was outperformed by

2-stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...

and I3 powerplants from other companies. When fitted to the B360/Porter light truck and van, the engine received the DB engine code.

RA

The RA engine was a larger version of the engine . It was used in the 1962-1964 P600 Carol and produced and of torque.

SA

The SA, a larger engine powered the 1963-1967

Mazda Familia The , also marketed prominently as the Mazda 323, Mazda Protegé and Mazda Allegro, is a small family car that was manufactured by Mazda between 1963 and 2003. The Familia line was replaced by the Mazda3/Axela for 2004. It was marketed as the '' ...

and the 1966

Mazda Bongo The , also known as Mazda E-Series and the Ford Econovan, is a cabover van and pickup truck manufactured by the Japanese automobile manufacturer Mazda since 1966. The Bongo name was also used for the Bongo Friendee, which is not a cabover desi ...

. Bore and stroke was for this water-cooled OHV engine. In the Familia, the SA produces at 6,000 rpm, while the Bongo received a detuned version with at 5,000 rpm. For 1966 and 1967, the max power of the SA mounted in the Familia increased to (at the same engine speed), by increasing the compression ratio from 8.5:1 to 9.0:1.

PB

The PB engine, a separate development, used a square bore and stroke. It was a water-cooled OHV engine and first powered the 1967 Mazda Familia 1000. Output ranged from , depending on the application. * Jan 1967 - Feb 1968 Mazda Familia 1000 Sedan, Van (Mazda 1000) * Nov 1967 - 1973 Mazda Familia 1000 (Mazda 1000)

TB

One of the more-popular variants of this family was the TB unit found in the Familia/1200. Bore and stroke was . The 1200 Coupé used a

Hitachi () is a Japanese multinational corporation, multinational Conglomerate (company), conglomerate corporation headquartered in Chiyoda, Tokyo, Japan. It is the parent company of the Hitachi Group (''Hitachi Gurūpu'') and had formed part of the Ni ...

Stromberg carburettor Stromberg, Strömberg, Strømberg, Stroemberg, or ''variant'' may refer to: Places Germany * Stromberg, Oelde, a town in Oelde * Stromberg (landscape), a region in Baden-Württemberg ** Stromberg-Heuchelberg Nature Park * Stromberg (Siebengeb ...

and 8.6:1 compression to produce at 6000 rpm and at 3000 rpm. This engine was built from 1968 until 1970 for passenger cars, until 1971 for the Familia Truck.

UA/UB

The UA (and the similar UB, for use in three-wheeled trucks) is a 1484 cc water-cooled

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 be ...

inline-four engine 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 ...

. It has a bore of and a stroke of . As installed in the original 1960 D1500 four-wheel truck, equipped with a sidedraft carburetor, it has a maximum horsepower of at 4600 rpm and a maximum torque of at 3000 rpm. The B1500's output remained the same but for the second generation B1500 an improved engine cylinder head and valves and a downdraft carburetor increased the maximum horsepower to at 5200 rpm and a maximum torque of at 3400 rpm. UA: *March 1960 – 1965: (DUA12) *1961-1965: Mazda B1500 (BUA/BUB) *1965-1971: Mazda B1500/Proceed (BUD61) *1965-1977: DUD9/DUE9 UB: *1962-1971:

VA

The VA first appeared in the Mazda D2000 of April 1962. With a bore and stroke of , displacement is . Power output was originally at 4600 rpm,Ozeki, p. 150 but later models have at 5000 rpm. * April 1962 - 1964 Mazda D2000, D2000 Microbus (DVA12) * 1964 - 1973 Mazda Light Bus (AEVA) * January 1964 - 1971 Mazda E2000 (EVA12/32) *

Mazda Parkway The Mazda Parkway is a minibus that was based on the Mazda Titan platform, and was manufactured at the Hiroshima Factory exclusively for the Japanese market. In 1974, the Parkway was installed with the 13B rotary engine and well as a 2000cc gaso ...

18 (EVK15) * 1971 - 197?

Mazda Titan The Mazda Titan is a commercial truck produced by the Japanese automaker Mazda since 1971. From the fourth generation onwards, the vehicle had become a rebadged Isuzu Elf truck. Predecessor Mazda's original entry into the mid-sized Light min ...

(EVB12) * 1973 - 197?

26 (AEVB)

References

{{DEFAULTSORT:Mazda Ohv Engine

Straight-twin engines Straight-four engines Gasoline engines by model

AA

DA/DB

RA

SA

PB

TB

UA/UB

VA

See also

References