Mazda RF engine

Specifications of the 2.0-liter Mazda RF diesel engine, reliability, resource, reviews, problems and fuel consumption.

The Mazda RF 2.0-liter pre-chamber diesel engine was produced from 1983 to 2003 in a huge number of modifications: both atmospheric RF-N and turbocharged RF-T. There was also an updated version of the RF1G for the 323 models and a compressor RF-CX for the 626.

The R-engine line also includes internal combustion engines: RF‑T and R2.

Specifications of the Mazda RF 2.0 liter engine

Atmospheric modifications RF-N, RF46

Exact volume	1998 cm³
Supply system	fore cameras
Internal combustion engine power	58 - 67 HP
Torque	120 Nm
Cylinder block	cast iron R4
Block head	aluminum 8v
Bore	86 mm
Piston stroke	86 mm
Compression ratio	21 – 23

Features of the internal combustion engine	SOHC
Hydraulic compensators	no
Timing drive	belt
Phase regulator	no
Turbocharging	no
What kind of oil to pour	5.0 liters 5W-30
fuel type	diesel
Environmental class	EURO 0
Approximate resource	300 000 km

Updated modification of RF1G 1995

Exact volume	1998 cm³
Supply system	fore cameras
Internal combustion engine power	71 hp
Torque	128 Nm
Cylinder block	cast iron R4
Block head	aluminum 8v
Bore	86 mm
Piston stroke	86 mm
Compression ratio	21.7

Features of the internal combustion engine	SOHC
Hydraulic compensators	no
Timing drive	belt
Phase regulator	no
Turbocharging	no
What kind of oil to pour	5.0 liters 5W-30
fuel type	diesel
Environmental class	EURO 2
Approximate resource	320 000 km

Compressor modifications RF-CX

Exact volume	1998 cm³
Supply system	fore cameras
Internal combustion engine power	76 - 88 HP
Torque	172 - 186 Nm
Cylinder block	cast iron R4
Block head	aluminum 8v
Bore	86 mm
Piston stroke	86 mm
Compression ratio	21.1

Features of the internal combustion engine	SOHC
Hydraulic compensators	no
Timing drive	belt
Phase regulator	no
Turbocharging	compressor
What kind of oil to pour	5.5 liters 5W-30
fuel type	diesel
Environmental class	EURO 1
Approximate resource	250 000 km

Turbo modifications RF-T

Exact volume	1998 cm³
Supply system	fore cameras
Internal combustion engine power	71 - 92 HP
Torque	172 - 195 Nm
Cylinder block	cast iron R4
Block head	aluminum 8v
Bore	86 mm
Piston stroke	86 mm
Compression ratio	19 – 21

Features of the internal combustion engine	SOHC
Hydraulic compensators	no
Timing drive	belt
Phase regulator	no
Turbocharging	Yes
What kind of oil to pour	5.5 liters 5W-30
fuel type	diesel
Environmental class	EURO 1/2
Approximate resource	250 000 km

RF engine weight is 187 kg (with outboard)

The RF engine number is located at the junction of the block with the head

Fuel consumption Mazda RF

Using the example of a 626 Mazda 1990 with a manual transmission:

City	8.1 liters
Track	5.4 liters
Mixed	6.3 liters

Which cars were equipped with the RF 2.0 l engine

Mazda

323C I(BH)	1995 – 1998
323 VI (BJ)	1998 – 2000
626 II (GC)	1983 – 1987
626 III (GD)	1987 – 1991
626 IV (GE)	1991 – 1997
Bongo III (SS)	1984 – 1995

Kia

Concord	1988 – 1991
Sportage 1 (YES)	1998 – 2003

Suzuki

Vitara 1 (ET)	1994 – 1998
Vitara GT	1998 – 2003

RF deficiencies, breakdowns and problems

These are simple and reliable diesel engines, most of their problems are due to old age.

Leaks are most often discussed on the forums, the unit sweats oil over the cylinder head gasket

According to the regulations, the timing belt is changed every 60 km, or if it breaks, the valve will bend

After 200-250 thousand km of run, cracks around the prechambers are often found

There are no hydraulic lifters and do not forget to adjust the valves every 100 km