Toyota 2RZ-FE

Toyota 2RZ-FEThe Toyota 2RZ-FE is a 2.4 L (2,438 cc, 148.8 cu·in) straight-four 4-stroke natural aspirated gasoline engine from Toyota RZ-family. The 2RZ-FE engine was manufactured from 1994 to 2004.

The 2RZ-FE engine features a cast-iron cylinder block and aluminum cylinder head with two overhead camshafts (DOHC) and four valves per cylinder (16 in total). The Toyota 2RZ-FE engine used Multipoint fuel injection system and Electronic Spark Advance (ESA) ignition system.

Compression ratio rating is 9:5:1. The cylinder bore is 95.0 mm (3.74 in) and the piston stroke is 86.0 mm (3.39 in). The 2RZ-FE engine produced 144 PS (106 kW; 142 HP) at 5,000 rpm of maximum horsepower and 217 N·m (22 kg·m, 159.9 ft·lb) at 4,000 rpm of maximum torque.

The breakdown of the engine code is as follows:

  • 2 – 2-nd generation engine
  • RZ – Engine family
  • F – Economy narrow-angle DOHC
  • E – Multi-Point Fuel Injection

General information

Engine Specifications
Engine code2RZ-FE
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline (petrol)
Production1994-2004
Displacement2.4 L, 2,438 cm3 (148.8 cu in)
Fuel systemMulti-Point Fuel Injection
Power adder
Power output144 PS (106 kW; 142 HP) at 5,000 rpm
Torque output217 N·m (22 kg·m, 159.9 ft·lb) at 4,000 rpm
Firing order1-3-4-2
Dimensions (L x W x H):
Weight

Cylinder block

The 2RZ-FE has a cast-iron cylinder block. A 95.0 mm (3.74 in) cylinder bore and 86.0 mm (3.39 in) piston stroke give the 2RZ-FE engine a total of 2,438 cc, (148.8 cu·in) of displacement. Compression ratio rating is 9.5:1. The 2RZ-FE engine used a fully-balanced crankshaft with 60.00 mm (2.36 in) of main journal diameter and 53.000 mm (2.08 in) of crankpin journal diameter.

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:9.5:1
Cylinder bore:95.0 mm (3.74 in)
Piston stroke:86.0 mm (3.39 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:5
Cylinder inner diameter (standard):94.990-95.003 mm (3.7398-3.7403 in)
Piston skirt diameter (standard):94.923-94.933 mm (3.7371-3.7375 in)
Piston pin outer diameter:24.000-24.009 mm (0.9449-0.9452 in)
Piston ring side clearance:Top0.020-0.070 mm (0.0008-0.0028 in)
Second0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap:Top0.300-0.400 mm (0.0118-0.0157 in)
Second0.400-0.500 mm (0.0157-0.0197 in)
Crankshaft journal diameter: №3: 59.981-59.994 mm (2.2615-2.3620 in.)
Other: 59.987-60.000 mm (2.3617-2.3622 in.)
Crankpin diameter:52.987-53.000 mm (2.0861-2.0866 in)

Crankshaft bearing cap tightening procedure and torque specs:

  • Step 1: 39 Nm; 3.9 kg·m; 29 ft·lb
  • Step 2: Turn all bolts 90°

After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.

Connecting rod bearing bolts

  • Step 1: 45 Nm 4.6 kg·m; 33 ft·lb)
  • Step 2: Turn bolts 90°

Cylinder head

The cylinder head is made of aluminum alloy which gives it good cooling efficiency. The engine has dual overhead camshaft design with four valves per cylinder. The intake camshaft is driven by a timing chain which has a hydraulic chain tensioner and oil jet for lubrication. The exhaust camshaft is driven via a scissors gear from the intake camshaft.

This engine does not use hydraulic lifters, so you need to adjust the valves clearances every 30,000 km (20,000 miles) of mileage.

Cylinder head
Valve Arrangement:DOHC, chain drive
Valves:16 (4 valves per cylinder)
Valve head diameter:INTAKE
EXHAUST
Valve length:INTAKE103.45 mm (4.0728 in)
EXHAUST103.60 mm (4.0787 in)
Valve stem diameter:INTAKE5.970-5.985 mm (0.235-0.2356 in)
EXHAUST5.965-5.980 mm (0.2348-0.2354 in)
Camshaft cam height:INTAKE45.31-45.41 mm (1.7839-1.7878 in)
EXHAUST45.06-45.16 mm (1.774-1.7779 in)
Outer camshaft journal diameter:26.959-26.975 mm (1.0614-1.062 in)

Head tightening procedure and torque specs:

  • Step 1: 39 Nm; 4.0 kg·m; 29 ft·lb
  • Step 2: Turn all bolts 90°
  • Step 3: Turn all bolts another 90°

Maintenance data

Valve clearance (Cold)
Intake valve (COLD)0.15-0.25 mm (0.006-0.010 in)
Exhaust valve (COLD)0.29-0.39 mm (0.0114-0.0154 in)
Compression pressure
Standard12.5 kgf/cm2 (178 psi) / 200 rpm
Minimun9.0 kgf/cm2 (127 psi) / 200 rpm
Compression differential limit between cylinders1.0 kgf/cm2 (14 psi) / 200 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil5W-30, 10W-30
Oil type APISL “Energy-Conserving”
Engine oil capacity (Refill capacity) 4.7-5.5 liters (5.0-5.8 US qts, 4.1-4.8 imp. qts)
Oil change interval, km (miles)5,000-10,000 (3,000-6,000)
Oil pressure Idle spped: 29 kPa (0.3 kg/cm3; 4.2 psi)
At 3,000 rpm: 245-490 kPa (2.5-5.0 kg/cm3; 36-71 psi)
Spark plugDENSO: K16R–U11, NGK: BKR5EYA–U
Spark plug gap1.0-1.1 mm (0.0394-0.0433 in)
Spark plug torque20 N·m (2 kg·m, 14.7 ft·lb)

Valve clearance adjustment data

Calculate the thickness of new adjusting valve shim so valve clearance comes within specified values.

R = Thickness of removed valve shim
N = Thickness of new valve shim
M = Measured valve clearance

Intake:
N = R + [M – 0.20 mm (0.008 in)]
Exhaust:
N = R + [M – 0.30 mm (0.012 in)]

Valve shims are available in 17 sizes to range from 2.500 mm (0.0984 in.) to 3.300 mm (0.1299 in.), in steps of 0.05 mm (0.0020 in).

Example (exhaust valve):
R = 2.650 mm
M = 0.500 mm
N = 2.650 + (0.50 – 0.30) = 2.800 mm.

Vehicle applications

ModelYears Produced
Toyota Tacoma1995–2004
Toyota Hilux1998–2004
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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

3 Comments

  1. Excellent site, thank you. I was hoping to find cylinder compression data for my Toyota 2.4L 2rz. Is it available or do I need to look elsewhere?
    Kind regards.
    Peter James

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