Mazda OHV engine

Template:Infobox automobile engine After an early flirtation with V-twin engines, Mazda's small cars of the 1960s were powered by OHV straight-2 and straight-4 engines. This family lasted from 1961 until the mid-1970s. Today, Mazda's keicars use Suzuki engines. It was produced at the Hiroshima Plant in Hiroshima, Japan.

AA

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

DA/DB

The water-cooled OHV straight-four 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 inline-four unit used in the T360 truck. The engine's small size was dictated by Japan's kei car 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 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 Template:Cvt. It was used in the 1962-1964 P600 Carol and produced Template:Cvt and of torque.

SA

The SA, a larger engine powered the 1963-1967 Mazda Familia and the 1966 Mazda Bongo. Bore and stroke was Template:Cvt 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 Template:Cvt, 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 Template:Cvt. The 1200 Coupé used a Hitachi/Stromberg carburettor and 8.6:1 compression to produce Template:Cvt 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 inline-four engine. 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 Template:Cvt 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 Template:Cvt at 5200 rpm and a maximum torque of at 3400 rpm.

UA:

• March 1960 – 1965: Template:Ill (DUA12)
• 1961-1965: Mazda B1500 (BUA/BUB)
• 1965-1971: Mazda B1500/Proceed (BUD61)
• 1965-1977: Template:Ill DUD9/DUE9

UB:

• 1962-1971: Template:Ill

VA

The VA first appeared in the Mazda D2000 of April 1962. With a bore and stroke of , displacement is . Power output was originally Template:Cvt at 4600 rpm, but later models have Template:Cvt 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 18 (EVK15)
• 1971 - 197? Mazda Titan (EVB12)
• 1973 - 197? Mazda Parkway 26 (AEVB)

See also

• Mazda engines
• Mazda Wankel engine