Mazda Diesel engine

Mazda has a long history of building its own Diesel engines, with the exception of a few units that were built under license.

These three engines (GA/GB/GC in Perkins' internal parlance) were developed especially for Mazda and were never offered by Perkins themselves.

All of these engines have cast iron blocks and heads, two overhead valves per cylinder driven by maintenance-free timing gears, crossflow heads, are indirect injection. US-market B2200 and Ford Ranger trucks - and possibly the others as well - had rotary Bosch VE-style injection pumps, built by Diesel Kiki under license from Bosch.

A diesel variation of the 1998 cc FE engine which shares its square internal dimensions of 86 mm (3.4 in) bore and 86 mm (3.4 in) stroke - it is virtually the same block, with identical bell housing pattern and block dimensions. This could be a testament to the F-block's strength as it was over-built for naturally aspirated duty. It's alloy head is entirely different though, with valves directly actuated rather than the rockers of the FE. The glow plugs are located in remote combustion chambers, with fuel delivered by a mechanical pump. The RF is light, with the original naturally aspirated version weighing in at 146 kg (322 lb), 10 kg more than the FE. The RF The RF and R2 continue production to this day as the MZR-CD, with counter-rotating balance-shafts mounted between the engine block and oil pan as well as much evolved head and direct-injection technology. The RF is a SOHC, four valves-per-cylinder engine. One of Mazda's more popular diesel engines, it was also available with a pressure wave supercharger called Comprex.

Applications:

Latest emission improved version used in Mazda 323 adopts a new swirl chamber with an enlarged volume, revised swirl-chamber-to-main-chamber ratio and a narrower throat area. Engine produces 52 kW (71 PS; 70 hp) at 4500 rpm on a raised 21.7:1 compression ratio, and has an exceptionally wide spread of torque throughout its range, peaking with 128 N·m (94 lb·ft) at 3000 rpm.

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