Mazda V-twin engine

The Mazda V-twin engine was an air-cooled V-twin engine produced by Mazda in the early 1960s. This was Mazda's first automobile engine, before a more common inline-four engine configuration was introduced.

BA (356 cc)
The first automobile engine from Mazda was the 356 cc (60x63 mm) air-cooled 90° V-twin. It was an overhead valve 4-valve pushrod design. This engine produced 16 PS and 16 lb·ft (22 Nm) in the 1960 Mazda R360.

EB (577 cc)
The engine was enlarged to 577 cc for the 1961 B600, which was built until 1966. It produces 20 PS at 4300 rpm and 3.8 kgm of torque at 3000 rpm. This engine is popular with custom motorcycle builders in Indonesia, who use it in a variety of frames to emulate the V-twin engined Harley-Davidsons.