Toyota 1FZ-FE

Toyota 1FZ-FEThe Toyota 1FZ-FE is a 4.5 L (4,476 cc, 273.14 cu·in) straight-six, four-stroke cycle natural aspirated gasoline engine. It was manufactured by the Toyota Motor Corporation from 1986 to 1992.

The Toyota 1FZ-FE engine features a cast-iron block and aluminum cylinder head with dual chain-driven overhead camshafts and four valves per cylinder (24 in total). The 1FZ-FE is equipped with an electronic fuel injection system and ignition system with a mechanical distributor. In 1998 the engine was equipped with the distributorless electronic ignition system. It has a 100.0 mm (3.94 in) cylinder bore and 95.0 mm (3.74 in) piston stroke. Compression ratio rating is 9.0:1.

This engine produced 215 PS (158 kW; 212 HP) at 4,600 rpm or 243 PS (179 kW; 240 HP) at 4,600 rpm of maximum horsepower and 373 N·m (38 kg·m, 274.9 ft·lb) at 3,200 rpm or 407 N·m (41.5 kg·m, 300 ft·lb) at 3,600 rpm of peak torque.

The breakdown of the engine code is as follows:

  • 1 – 1-st generation engine
  • FZ – Engine family
  • F – Economy narrow-angle DOHC
  • E – Multi-Point Fuel Injection

General information

Engine Specifications
Engine code1FZ-FE
LayoutFour stroke, Inline-6 (Straight-6)
Fuel typeGasoline
Production1992-2009
Displacement4.5 L, 4,476 cm3 (273.14 cu in)
Fuel systemMulti-point fuel injection system
Power adderNone
Max. horsepower 215 PS (158 kW; 212 HP) at 4,600 rpm
243 PS (179 kW; 240 HP) at 4,600 rpm
Max. torque 373 N·m (38 kg·m, 274.9 ft·lb) at 3,200 rpm
407 N·m (41.5 kg·m, 300 ft·lb) at 3,600 rpm
Firing order1-5-3-6-2-4
Dimensions (L x H x W):
Weight265 kg (584.2 lbs)

Cylinder block

The Toyota 1FZ-FE engine has a cast-iron cylinder block, bore is 100.0 mm (3.94 in) and the piston stroke is 95.0 mm (3.74 in). The cylinder block, a monoblock specially cast structure, employs the seven bearing support system. The pistons are aluminum casting. Each piston is fitted with two compression rings and a single oil ring. Compression ratio rating is 9.0:1

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:9.0:1
Cylinder bore:100.0 mm (3.94 in)
Piston stroke:95.0 mm (3.74 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:7
Cylinder inner diameter (standard):100.000-100.010 mm (3.937-3.9374 in)
Piston skirt diameter (standard):99.950-99.960 mm (3.935-3.9354 in)
Piston pin outer diameter:26.000-26.012 mm (1.0236-1.0241 in)
Piston ring side clearance:Top0.040-0.080 mm (0.0016-0.0031 in)
Second0.030-0.070 mm (0.0012-0.0028 in)
Piston ring end gap:Top0.300-0.520 mm (0.0118-0.0205 in)
Second0.450-0.670 mm (0.0177-0.0264 in)
Oil0.150-0.520 mm (0.0059-0.0205 in)
Crankshaft main journal diameter:68.982-69.000 mm (2.7158-2.7165 in)
Crankpin diameter:56.982-57.000 mm (2.2434-2.2441 in)

Main bearing cap bolts torque specs:

  • Step 1: 74 Nm; 7.5 kg·m; 54 ft·lb
  • Step 2: Turn all bolts 90°

Connecting rods cap bolts torque specs:

  • Step 1: 48 Nm; 4.9 kg·m; 35 ft·lb
  • Step 2: Turn all bolts 90°

Crankshaft pulley torque specs:

  • 412 Nm 40.2 kg·m; 304 ft·lb

Cylinder head

The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. Camshafts are made of specially cast steel and are driven by the timing chain. The intake camshaft is driven by a single roller chain, and the exhaust camshaft is driven by a scissor gear off the intake camshaft.

The 1FZ-FE engine had four valves per cylinder. Intake duration of 225 degrees and exhaust duration of 225 degrees.

Cylinder head alloy:Aluminum
Valve Arrangement:DOHC, belt drive
Valves:24 (4 valves per cylinder)
Intake duration:225°
Exhaust duration:225°
Valve head diameter:INTAKE
EXHAUST
Valve length:INTAKE98.4 mm (3.874 in)
EXHAUST97.9 mm (3.8543 in)
Valve stem diameter:INTAKE6.970-6.985 mm (0.2744-0.275 in)
EXHAUST6.965-6.980 mm (0.2742-0.2748 in)
Valve spring free length:43.94-45.06 mm (1.7299-1.774 in)
Camshaft lobe height:INTAKE50.61-50.71 mm (1.9925-1.9965 in)
EXHAUST50.61-50.71 mm (1.9925-1.9965 in)
Camshaft journal diameter:26.959-26.975 mm (1.0614-1.062 in)

Cylinder head 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 (0.006-0.0100 in)
Exhaust valve (COLD)0.25-0.35 mm (0.0098-0.0138 in)
Compression pressure
Standard12.0 kg/cm2 / 300 rpm
Minimun9.0 kg/cm2 / 300 rpm
Oil system
Oil consumption , L/1000 kmup to 1.0
Recommended engine oil 5W-30
5W-40
10W-30
Oil type APISH “Energy−Conserving”
Engine oil capacity (Refill capacity) Without oil filter: 6.9 L
With oil filter: 7.2 L
Oil change interval, km (miles)10,000 (6,000)
Ignition system
Spark plugNGK: BKR5EYA, DENSO: K16R−U
Spark plug gap0.8 mm (0.0315 in)
Spark plug torque20 N·m (2 kg·m, 14.7 ft·lb)

Vehicle applications

ModelYears Produced
Land Cruiser (J70)1992-2009
Land Cruiser (J80)1992-2006
Land Cruiser (J100)1998-2007
Lexus LX4501995-1997
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