Toyota RZ engine

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The Toyota RZ engine family is a straight-4 piston engine series built in Japan. The RZ series uses a cast iron engine block and aluminum SOHC or DOHC cylinder heads. It has EFI fuel injection, 2 or 4 valves per cylinder and features forged steel connecting rods.

1RZ[edit]

The 1RZ is a 2.0 L (1,998 cc) version built from 1989. Bore is 86 mm and stroke is 86 mm.

1RZ-E[edit]

The 1RZ-E is the fuel-injected version of the 1RZ. With a 9.0 to 1 compression ratio, output is 101–108 hp at 5,400 rpm with 118–123 lb·ft (161–167 N·m) of torque at 2,800 rpm.

Applications:

2RZ[edit]

2RZ-FE Engine in a 1998 Toyota Hilux

The 2RZ is a 2.4 L (2,438 cc) version. Bore is 95 mm and stroke is 86 mm; a variety of combination of heads and fuel delivery systems were available.

2RZ-E[edit]

This is an SOHC engine with two valves per cylinder. Valve adjustment is by shim over bucket. Output is 120 PS (88 kW) at 5,200 rpm. Originally manufactured with a carburetor induction system, it was later upgraded to Electronic Fuel Injection, with the -E suffix added to the engine designation. Toyota specified unleaded fuel with a rating of at least 91 RON (Research Octane Rating) in Australia.<Toyota Owners Handbook>

Applications:

  • 1989–2004 Toyota HiAce (encompassing the RZH1xx series, with the 2RZ-E engine variant introduced in 1998)

2RZ-FE[edit]

The 2RZ-FE is a 2.4 L (2,438 cc) version. Bore is 95 mm and stroke is 86 mm. Compression ratio is 9.5 to 1. Output is 142 hp (106 kW) at 5000 RPM with 160 lb·ft (217 N·m) of torque at 4000 RPM. This engine does not feature balance shafts. It has four valves per cylinder and DOHC. Valve adjustment is by shim over bucket.

Applications:

3RZ[edit]

3RZ-FE[edit]

The 3RZ-FE is a 2.7 L (2,693 cc) version. Bore is 95 mm and stroke is 95 mm. Compression ratio is 9.5 to 1. Output is 150 hp (112 kW) at 4800 RPM with 177 lb·ft (240 N·m) of torque at 4000 RPM. This engine features twin, chain-driven balance shafts. It has four valves per cylinder and DOHC. Valve adjustment is by shim over bucket.

3RZ-FE in a Toyota T100

Applications:

See also[edit]

References[edit]