Toyota RZ engine
The Toyota RZ engine family is a straight-four piston engine series built in Japan. The RZ series uses a cast-iron engine block and aluminum SOHC or DOHC cylinder heads. It has electronic fuel injection (EFI), 2 or 4 valves per cylinder and features forged steel connecting rods.
| Toyota RZ engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Toyota Motor Corporation |
| Production | 1989–2004 |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Cylinder bore |
|
| Piston stroke |
|
| Block material | Cast iron |
| Head material | Aluminum |
| RPM range | |
| Redline | 5,500 |
| Combustion | |
| Fuel system | Electronic fuel injection |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 101–150 hp (75–112 kW; 102–152 PS) |
| Torque output | 118–177 lb⋅ft (160–240 N⋅m) |
| Chronology | |
| Predecessor | |
| Successor | Toyota TR engine |
1RZ
The 1RZ is a 2.0 L (1,998 cc) version built from 1989. Bore and stroke is 86 mm × 86 mm (3.39 in × 3.39 in).
1RZ-E
The 1RZ-E is the fuel-injected version of the 1RZ. With a compression ratio of 9.0:1, output is 101–108 hp (75–81 kW; 102–109 PS) at 5,400 rpm with 118–123 lb⋅ft (160–167 N⋅m) of torque at 2,800 rpm. With redline at 5,500 rpm.
Applications:
- 1989–2004 Toyota HiAce
- 1998–2005 Toyota Revo
- 1998–2001 Toyota Hilux
- 2000–2004 Toyota Kijang/Venture
2RZ
The 2RZ is a 2.4 L (2,438 cc) version. Bore and stroke is 95 mm × 86 mm (3.74 in × 3.39 in); a variety of combination of heads and fuel delivery systems were available.
2RZ-E
This is an SOHC engine with two valves per cylinder. Valve adjustment is by shim over bucket. Output is 120 PS (88 kW; 118 hp) 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 in Australia.
Applications:
- 1989–2004 Toyota HiAce (encompassing the RZH1xx series, with the 2RZ-E engine variant introduced in 1998)
2RZ-FE
The 2RZ-FE, and 4RB1 or 4RB2 in China, is a 2.4 L (2,438 cc) version. Bore and stroke is 95 mm × 86 mm (3.74 in × 3.39 in). Compression ratio is 9.5:1. Output is 142 hp (106 kW; 144 PS) 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. The 2RZ-FE is an interference engine. A 2.2 L (2,185 cc) version called the 4RB3 is also manufactured in China. This one has a bore and stroke of 91 mm × 84 mm (3.58 in × 3.31 in), while sharing the 2RZ's 102.5 mm (4.04 in) bore spacing.
Applications:
- 1995–2004 Toyota Tacoma 4x2
- 1998–2004 Toyota Hilux
3RZ
3RZ-FE
The 3RZ-FE is a 2.7 L (2,693 cc) version. Bore and stroke is 95 mm × 95 mm (3.74 in × 3.74 in). Compression ratio is 9.5:1. Output is 150 hp (112 kW; 152 PS) 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. The 3RZ-FE is an interference engine.
Applications:
- 1995–2004 Toyota Tacoma
- 1996–2000 Toyota 4Runner
- 1994–1998 Toyota T100
- 1995–2002 Toyota Granvia
- 1995–2004 Toyota Hilux
- 1990–2004 Toyota HiAce
- 2001–2009 Toyota Land Cruiser (Venezuela)
- 1996–2004 Toyota Land Cruiser Prado
- 1998–2002 Toyota Touring Hiace
