Mazda OHV 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.

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 359cc, producing 24.3 kW (33 PS/33 hp) and 39.2 Nm(29 ft-lb) of torque.

The 358 cc water-cooled OHV straight-4 DA engine, used in the 1962 P360 Carol had a tiny 46 mm (1.8 in) bore and 54 mm (2.1 in) stroke. This was one of the smallest production four-cylinder automobile engines in history, only beaten by Honda's 356 cc I4 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 360 cc. 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.

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