Toyota 1FZ-FE (4.5 L, DOHC) Engine: Specs, Review & Service Data
Toyota 1FZ-FE Engine Specs
The Toyota 1FZ-FE is a 4.5 L (273.14 cu·in, 4,476 cc) straight-six, four-stroke cycle natural aspirated gasoline engine. From 1986 to 1992, it was made by the Toyota Motor Corporation.
The Toyota 1FZ-FE engine has a cast-iron block and an aluminum cylinder head. It also has four valves per cylinder and two chain-driven overhead camshafts (24 in total).
The Toyota 1FZ-FE has an electronic fuel injection system and a mechanical distributor for the ignition system. In 1998, the engine was given an electronic ignition system that did not use a distributor.
It has a cylinder bore of 100.0 mm (3.94 in) and a piston stroke of 95.0 mm (3.74 in). The compression ratio rating is 9.0:1.
This Toyota 1FZ-FE engine delivered 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 407 N·m (41.5 kg·m, 300 ft·lb) at 3,600 rpm or 373 N·m (38 kg·m, 274.9 ft·lb) at 3,200 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
Toyota 1FZ-FE (4.5 L, DOHC) Engine Specifications
Engine Specifications
| Engine code | 1FZ-FE |
| Layout | Four stroke, Inline-6 (Straight-6) |
| Fuel type | Gasoline |
| Production | 1992-2009 |
| Displacement | 4.5 L, 4,476 cm3 (273.14 cu in) |
| Fuel system | Multi-point fuel injection system |
| Power adder | None |
| 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 order | 1-5-3-6-2-4 |
| Dimensions (L x H x W): | – |
| Weight | 265 kg (584.2 lbs) |
Cylinder block
| Cylinder block alloy | Cast-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: | Top | 0.040-0.080 mm (0.0016-0.0031 in) |
| Second | 0.030-0.070 mm (0.0012-0.0028 in) | |
| Piston ring end gap: | Top | 0.300-0.520 mm (0.0118-0.0205 in) |
| Second | 0.450-0.670 mm (0.0177-0.0264 in) | |
| Oil | 0.150-0.520 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
| 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: | INTAKE | 98.4 mm (3.874 in) |
| EXHAUST | 97.9 mm (3.8543 in) | |
| Valve stem diameter: | INTAKE | 6.970-6.985 mm (0.2744-0.275 in) |
| EXHAUST | 6.965-6.980 mm (0.2742-0.2748 in) | |
| Valve spring free length: | 43.94-45.06 mm (1.7299-1.774 in) | |
| Camshaft lobe height: | INTAKE | 50.61-50.71 mm (1.9925-1.9965 in) |
| EXHAUST | 50.61-50.71 mm (1.9925-1.9965 in) | |
| Camshaft journal diameter: | 26.959-26.975 mm (1.0614-1.062 in) | |
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 | |
| Standard | 12.0 kg/cm2 / 300 rpm |
| Minimun | 9.0 kg/cm2 / 300 rpm |
| Oil system | |
| Oil consumption , L/1000 km | up to 1.0 |
| Recommended engine oil | 5W-30 5W-40 10W-30 |
| Oil type API | SH “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 plug | NGK: BKR5EYA, DENSO: K16R−U |
| Spark plug gap | 0.8 mm (0.0315 in) |
| Spark plug torque | 20 N·m (2 kg·m, 14.7 ft·lb) |
Vehicle Applications
| Model | Years Produced |
| Land Cruiser (J70) | 1992-2009 |
| Land Cruiser (J80) | 1992-2006 |
| Land Cruiser (J100) | 1998-2007 |
| Lexus LX450 | 1995-1997 |
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Final Words
This concludes our discussion of the Toyota 1FZ-FE (4.5 L, DOHC) Engine specs and review; however, if you have any questions regarding this article, please submit them in the comment section below. We will do our best to respond to you as soon as possible.
