Toyota RZ engine

Last updated
Toyota RZ engine
Toyota 2RZ-FE engine 1998 Hilux.jpg
Toyota 2RZ-FE in a Hilux
Overview
Manufacturer Toyota Motor Corporation
Production1989–2004
Layout
Configuration Naturally aspirated Straight-4
Cylinder bore
  • 86 mm (3.39 in)
  • 95 mm (3.74 in)
Piston stroke
  • 86 mm (3.39 in)
  • 95 mm (3.74 in)
Cylinder block material Cast iron
Cylinder head materialAluminum
RPM range
Max. engine speed 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

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.

Contents

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). The original carburetted model in Japanese trim produces 100 PS (74 kW; 99 hp) at 5,400 rpm and maximum torque of 162 N⋅m (119 lb⋅ft) at 2,400 prm.

Applications:

1RZ-E

The 1RZ-E is the fuel-injected version of the 1RZ. With a compression ratio of 9.0:1 and in Japanese trim, output is 110 PS (81 kW; 108 hp) at 5,200 rpm and maximum torque of 167 N⋅m (123 lb⋅ft) at 2,600 prm. With redline at 5,500 rpm.

Applications:

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

2RZ-E Engine in a 1994 Toyota HiAce (RZH101G) 2RZ-E engine in 1994 Hiace Wagon Super Custom.jpg
2RZ-E Engine in a 1994 Toyota HiAce (RZH101G)

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 4800 rpm with 146 lb⋅ft (198N⋅m) of torque at 2600 rpm. It does not have balance shafts and is known for vibrations. [1] 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:

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 with a timing chain. [2] [3] A 2.2 L (2,185 cc) version called the 4RB3 is also manufactured in China which 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.[ citation needed ] According to a review in 2023, there are reports of the engine typically lasting over 250,000-300,000 miles and less frequently 500,000 miles. [2]


Applications:

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 with a timing chain reported to last 150,000 miles. [4] The cylinder head is composed of aluminum alloy and the intake manifold is made from aluminum. [5]

3RZ-FE in a Toyota T100 4cylT100.JPG
3RZ-FE in a Toyota T100

Applications: [5]

See also

References

  1. ↑ Guardiola, El (2022-09-05). "Engine specifications for Toyota 2RZ-E, characteristics, oil, performance". mymotorlist.com. Retrieved 2024-11-19.
  2. 1 2 3 4 says, Shawn Myers (2023-10-23). "Toyota's 2RZ-FE Engine: Problems, Reliability & Specs". Low Offset. Retrieved 2024-11-19.
  3. ↑ "Toyota 2RZ-FE – Engine Specs". www.engine-specs.net. Retrieved 2024-11-19.
  4. ↑ "3RZ-FE 2.7L Engine - In-Depth Look at Design and Reliability". MotorReviewer - In-Depth Engine Reviews. Retrieved 2024-11-19.
  5. 1 2 "Toyota 3RZ Engine: Everything You Need To Know – Dust Runners Automotive Journal". 2021-11-28. Retrieved 2024-11-19.
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