Toyota RZ engine
Overview
Manufacturer	Toyota Motor Corporation
Production	1989–2004
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 material	Aluminum
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	Toyota K engine Toyota Y engine
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.

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:

• 1989–1993 Toyota HiAce

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:

• 1989–2004 Toyota HiAce Van, Wagon
• 1998–2001 Toyota Hilux
• 2000–2004 Toyota Kijang/Revo/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)

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. 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
• 1999-2006 ARO 24 Series

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.

Applications:

• 1995–2004 Toyota Tacoma
• 1996–2000 Toyota 4Runner
• 1994–1998 Toyota T100
• 1995–2002 Granvia
• 1995–2004 Toyota Hilux
• 1990–2004 Toyota HiAce
• 2001–2009 Toyota Land Cruiser Prado (Venezuela)^{[citation needed]}
• 1996–2004 Toyota Land Cruiser Prado
• 1998–2002 Toyota Touring Hiace