
There was also a 16-valve, SOHC B5-MI version of the B5, usually fitted with single-point fuel injection ("EGi"). It was also fitted to the Mazda Étude coupé and fifth-generation BF-series Familia Wagon, as it continued in production until 1994 along the new BG. Later variants were used in the Mazda Demio subcompact until 2002. It was available in SOHC variants and was found in the Kia-built 1988–1993 Ford Festiva, the 1987–1989 Mazda Familia and its derivatives, as well as the Mazda 121 (also known as Autozam Revue) (54 hp and 72 hp version), and the 1987–1989 Ford Laser, and 1994–1997 Ford Aspire. It is a short-stroke version of the B5/ B6 engines. It generates 88 PS (65 kW) at 7000 rpm and is equipped with Mazda's "EGi" single-point fuel injection. The 1.3 L (1,290 cc) BJ engine (78.0圆7.5 mm) was a DOHC 16-valve engine, used only in the Japanese market Ford Festiva GT, GT-X, and GT-A models (1986.10-1993.01, GT-A from March 1991). A fuel-injected variant was used in select European market 1991-1995 Mazda 121s BJ It was available in the 1987-1989 Mazda 121 and later model Kia Sephia in European and Asian markets.

The Mazda B-series is a "non-interference" design, meaning that breakage of its timing belt does not result in damage to valves or pistons, because the opening of the valves, the depth of the combustion chamber and (in some variants) the shaping of the piston crown allow sufficient clearance for the open valves in any possible piston position.ġ.1 L (1,138 cc) B1 - (68.0x78.4 mm) - came only as a SOHC 8-valve. It was used from front-wheel drive economy applications to the turbocharged full-time 4WD 323 GTX and rear-wheel drive Miata as well as numerous other models. The Mazda B-series engine - not to be confused with the Mazda B-Series truck - is a small-sized, iron-block, inline four-cylinder with belt-driven SOHC and DOHC valvetrain ranging in displacement from 1.1 to 1.8 litres.
