Mazda B engine

The Mazda B-series is a small-sized, iron-block, inline four-cylinder engine with belt-driven SOHC and DOHC valvetrain ranging in displacement from 1.1 to 1.8 litres.

A fuel-injected variant was used in select European market 1991-1995 Mazda 121s The 1.3 L (1,290 cc) BJ engine (78.0x67.5 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).

It generates 88 PS (65 kW) at 7000 rpm and is equipped with Mazda's "EGi" single-point fuel injection.

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.

Kia's version of the B6 (16-valve DOHC) had a marginally shorter stroke (at 83.4 mm), for a total displacement of 1,594 cc.

The Japanese version was slightly more powerful, producing 140 PS (103 kW) and 19.0 kg⋅m (186 N⋅m) due to better intake manifold design and its ability to run 100 octane fuel.

For the special rally homologation BFMR Familia GT-Ae model released in 1987, power and torque were raised to 150 PS (110 kW) and 20.0 kg⋅m (196 N⋅m) respectively through the use of a slightly different turbocharger; engine internals remained otherwise identical.

1.6 L (1,597 cc) B6D - (78.0x83.6 mm) - The same strengthened and fuel-injected 16-valve DOHC B6 but with higher compression, no turbo, and the first Mazda engine to feature Variable Inertia Charge System (VICS).

Most commonly found in the 1985-1988 Japanese market Familias, Études and Lasers, this engine was updated in 1989 with revised compression, heads and intake system (in a similar vein to the B5 DOHC) for the 1989-1991 Familia and Laser, then further refined for the 1991-1994 Mercury Capri and 1994 to 1996, second Generation Mazda MX-3 RS.

The third-generation B6D features an alloy cam cover, a VLIM (VICS) intake, had a 9:1 compression ratio and produced 107 hp (79 kW).

It features hydraulic lash adjusters, a belt-driven cam, an 8.9:1 compression ratio, a 6,000 rpm redline, and multi-port fuel injection.

This Inline-four engine was called BP-ZE by Mazda engineers and featured a forged crankshaft, piston oil squirters, a structural aluminium oil pan with cooling fins, a 7,000 rpm redline, and Variable Inertia Charging System (VICS) which is activated by a control solenoid at high rpm to increase horsepower in the upper rev range.

This particular variant can be found in the following vehicles: There is also a non-performance SOHC version that is most easily recognized by its black stamped-steel oil pan.

[4] It featured an IHI RHB5 VJ20 turbocharger, sidemount intercooler, 330 cc blacktop injectors (high impedance).

The BPT versions of the Familia and Laser were only available in AWD models, and featured a viscous LSD centre and rear differentials.

Applications: In 2001, Mazda introduced the still 1.8 L (1,839 cc) BP-Z3 (also called BP-VE) variant of the BP engine.

In Australia, a turbocharged version of this engine produced 157 kW (211 hp) and 280 N⋅m (207 lb⋅ft) in the Mazda MX-5 SP.