Mazda OHV engine

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 {{cvt|359|cc}}, producing {{cvt|24.3|kW|PS|0}} and {{cvt|39.2|Nm|lbft|0}} of torque.{{cite web|title=Specifications on Mazda Chantez|url=http://www.automobile-catalog.com/car/1972/1618940/mazda_chantez_gf.html|website=Automobile Catalog|accessdate=28 November 2016}}

The {{Convert|358|cc|abbr=on}} water-cooled OHV straight-four DA engine, used in the 1962 P360 Carol had a tiny {{Convert|46x54|mm|in|abbr=on}} bore and stroke. This was one of the smallest production four-cylinder automobile engines in history, only beaten by Honda's {{Convert|356|cc|abbr=on}} 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 {{Convert|360|cc|abbr=on}}. 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.{{cite journal | ref = JAMA15 | title = 自動車ガイドブック 1968年~69年新 |trans-title=Japanese motor vehicles guide book 1968/1969 | language = Japanese | volume = 15 | date = 1968-10-25 | publisher = Japan Automobile Manufacturers Association | location = Japan | pages = 138, 160 }}

The {{Convert|586|cc|abbr=on}} RA engine was a larger version of the {{Convert|358|cc|abbr=on}} engine {{cvt|54x64|mm|in|2}}. It was used in the 1962-1964 P600 Carol and produced {{cvt|28|PS|kW|0}} and {{convert|4.2|kgm|Nm lbft|abbr=on}} of torque.

The SA, a larger {{Convert|782|cc|abbr=on}} engine powered the 1963-1967 Mazda Familia and the 1966 Mazda Bongo. Bore and stroke was {{cvt|58x74|mm|in|2}} for this water-cooled OHV engine. In the Familia, the SA produces {{convert|42|PS|kW|0|abbr=on}} at 6,000 rpm, while the Bongo received a detuned version with {{convert|37|PS|kW|0|abbr=on}} at 5,000 rpm.{{Cite book | last = Ozeki | first = Kazuo |script-title=ja:日本のトラック・バス 1918~1972 |trans-title=Japanese Trucks and Buses 1918-1972 | publisher = Miki Press | year = 2007 | page = 156 | location = Tokyo | language = Japanese | isbn = 978-4-89522-494-9 }} For 1966 and 1967, the max power of the SA mounted in the Familia increased to {{convert|45|PS|kW|0|abbr=on}} (at the same engine speed), by increasing the compression ratio from 8.5:1 to 9.0:1.{{cite journal | last=Tanegawa | first= Takeshi (長谷川) | title=Mazda Familia Model SSA | language=Japanese | journal=Letter from Toyota Museum (トヨタ博物館だより) | publisher=Toyota Motor Corporation | url = http://www.toyota.co.jp/Museum/data/magazine71/magazine71_5.pdf | issue=71 |date=June 2007 | pages=5–7 | accessdate = 2011-07-16 }}

The {{Convert|987|cc|L|1|order=flip|abbr=on}} PB engine, a separate development, used a square {{Convert|68|mm|in|2|abbr=on}} bore and stroke. It was a water-cooled OHV engine and first powered the 1967 Mazda Familia 1000. Output ranged from {{cvt|52|to|58|PS|kW|0}}, depending on the application.

• Jan 1967 - Feb 1968 Mazda Familia 1000 Sedan, Van (Mazda 1000)
• Nov 1967 - 1973 Mazda Familia 1000 (Mazda 1000)

One of the more-popular variants of this family was the {{Convert|1169|cc|L|1|order=flip|abbr=on}} TB unit found in the Familia/1200. Bore and stroke was {{cvt|70x76|mm|in|2}}. The 1200 Coupé used a Hitachi/Stromberg carburettor and 8.6:1 compression to produce {{cvt|68|PS|kW|0}} at 6000 rpm and {{Convert|9.6|kgm|0|abbr=on}} at 3000 rpm.{{Cite book |script-title =ja:絶版車カタログ 国産車編 Part1 1950~1969 (Eichi Mook) |trans-title=Japanese Vintage Car Guide: Car Catalog part 1, 1950–1969 | publisher = Eichi Publishing (英知出版) | location = Tokyo | page = 64 | year = 1996 | isbn = 4-7542-5055-9 }} This engine was built from 1968 until 1970 for passenger cars, until 1971 for the Familia Truck.

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 {{convert|75|mm|in|abbr=on}} and a stroke of {{convert|84|mm|in|abbr=on}}. As installed in the original 1960 D1500 four-wheel truck, equipped with a sidedraft carburetor, it has a maximum horsepower of {{cvt|60|PS|kW|0}} at 4600 rpm and a maximum torque of {{Convert|10.4|kgm|0|abbr=on}} 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 {{cvt|72|PS|kW|0}} at 5200 rpm and a maximum torque of {{Convert|12.0|kgm|0|abbr=on}} at 3400 rpm.

UA:

• March 1960 – 1965: {{ill|Mazda D1500|ja|マツダ・ロンパー}} (DUA12)
• 1961-1965: Mazda B1500 (BUA/BUB)
• 1965-1971: Mazda B1500/Proceed (BUD61)
• 1965-1977: {{ill|Mazda Kraft|ja|マツダ・クラフト}} DUD9/DUE9

UB:

• 1962-1971: {{ill|Mazda T1500|ja|マツダ・T1500}}

The VA first appeared in the Mazda D2000 of April 1962. With a bore and stroke of {{Convert|82x94|mm|in|2|abbr=on}}, displacement is {{convert|1985|cc|L|1|disp=flip|abbr=on}}. Power output was originally {{cvt|81|PS|kW|0}} at 4600 rpm,Ozeki, p. 150 but later models have {{cvt|92|PS|kW|0}} at 5000 rpm.{{cite journal | ref = JAMA20 | journal = 自動車ガイドブック: Japanese motor vehicles guide book | title = Japanese Motor Vehicles Guide Book | language = Japanese | volume = 20 | date = 1973-10-30 | publisher = Japan Automobile Manufacturers Association | location = Japan | page = 279 }}

• 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)

• Mazda engines
• Mazda Wankel engine

{{Reflist}}

{{Mazda vehicles}}

{{DEFAULTSORT:Mazda Ohv Engine}}

OHV

Category:Straight-twin engines

Category:Straight-four engines

Category:Gasoline engines by model