The 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 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
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 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
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: | 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) | |
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 | |
| 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 |
Author:
HI
I have a 1FZ-FE 4477CC petrol engine. The vehicle model FZJ105R.
This vehicle is an automatic petrol as I stated. Can I remove this engine and fit in an Automatic Diesel.
The same engine family. Same transmission. Want to improve economy from Petrol to Diesel.
Is this conversion possible.
I will really appreciate your professional advice and recommendation on the Diesel model choice for my model vehicle.
Adam , just came across this doing my own research. I too own a fzj 80 land cruiser and was looking to do the same thing as you are for better mpg. I was wondering if you ever got an answer or if you ever did an engine swap. Contact me please. Cheers !