The Toyota 2F is a 4.2 L (4,230 cc, 258.1 cu·in) straight-six, four-stroke cycle natural aspirated gasoline engine from the Toyota F-family. The engine was manufactured by the Toyota Motor Corporation from 1975 to 1988.
The Toyota 2F engine features a cast-iron block, cast-iron cylinder head with a gear driven camshaft and two valves per cylinder (12 in total). It has an 94.0 mm (3.7 in) cylinder bore and 101.6 mm (4 in) piston stroke. The compression ratio rating is 7.8:1. The 2F engine used down draft, two-barrel carburetor and ignition system with contact breaker.
This engine produced from 125.0 PS (92.0 kW; 123.4 HP) at 3,500 rpm to 140.0 PS (103 kW; 138.1 HP) at 3,600 rpm of horsepower and from 271.0 N·m (27.6 kg·m, 200.0 ft·lb) at 1,800 rpm to 294.0 N·m (30.0 kg·m, 216.7 ft·lb) at 1,800 rpm of peak torque (depending on application and market).
The breakdown of the engine code is as follows:
- 2 – 2nd generation engine
- F – Engine family
General information
| Engine Specifications | |
| Engine code | 2F |
| Layout | Four stroke, Inline-6 (Straight-6) |
| Fuel type | Gasoline |
| Production | 1975-1988 |
| Displacement | 4.2 L, 4,230 cm3 (258.1 cu in) |
| Fuel system | Down draft, two-barrel |
| Power adder | None |
| Max. horsepower | From 125.0 PS (92.0 kW; 123.4 HP) at 3,500 rpm to 140.0 PS (103 kW; 138.1 HP) at 3,600 rpm |
| Max. torque | From 271.0 N·m (27.6 kg·m, 200.0 ft·lb) at 1,800 rpm to 294.0 N·m (30.0 kg·m, 216.7 ft·lb) at 1,800 rpm |
| Firing order | 1-5-3-6-2-4 |
| Dimensions (L x H x W): | – |
| Weight | 286 kg (630.5 lbs) |
Cylinder block
| Cylinder block | ||
| Cylinder block alloy | Cast-iron | |
| Compression ratio: | 7.8:1, 8.2:1 | |
| Cylinder bore: | 94.0 mm (3.7 in) | |
| Piston stroke: | 101.6 mm (4.00 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 4 | |
| Cylinder inner diameter (standard): | 94.000-94.050 mm (3.7008-3.7027 in) | |
| Piston skirt diameter (standard): | 93.970-94.020 mm (3.6996-3.7016 in) | |
| Piston ring groove clearance: | Top | 0.030-0.060 mm (0.0012-0.0024 in) |
| Second | 0.020-0.060 mm (0.0008-0.0024 in) | |
| Oil | 0.030-0.070 mm (0.0012-0.0028 in) | |
| Piston ring end gap: | Top | 0.200-0.560 mm (0.0079-0.022 in) |
| Second | 0.200-0.580 mm (0.0079-0.0228 in) | |
| Oil | 0.150-0.880 mm (0.0059-0.0346 in) | |
| Crankshaft main journal diameter: | Front: 66.970-67.000 mm (2.6366-2.6378 in) 2nd: 68.470-68.500 mm (2.6957-2.6969 in) 3rd: 69.970-70.000 mm (2.7547-2.7559 in) Rear: 71.470-71.500 mm (2.8138-2.8150 in) | |
| Crankpin diameter: | 53.980-54.000 mm (2.1252-2.126 in) | |
Cylinder head
| Cylinder head alloy: | Cast-iron | |
| Valve Arrangement: | OHV, gear drive | |
| Valves: | 12 (2 valves per cylinder) | |
| Intake duration: | – | |
| Exhaust duration: | – | |
| Valve head diameter: | INTAKE | 46.0 mm (1.811 in) |
| EXHAUST | 37.5 mm (1.4764 in) | |
| Valve length: | INTAKE | 124.5-125.1 mm (4.9016-4.9252 in) |
| EXHAUST | 124.7-125.3 mm (4.9094-4.9331 in) | |
| Valve stem diameter: | INTAKE | 7.970-7.985 mm (0.3138-0.3144 in) |
| EXHAUST | 7.960-7.975 mm (0.3134-0.314 in) | |
| Valve spring free length: | 51.5 mm (2.0276 in) | |
| Camshaft lobe height: | INTAKE | 38.360-38.460 mm (1.5102-1.5142 in) |
| EXHAUST | 38.250-38.350 mm (1.5059-1.5098 in) | |
| Camshaft journal diameter: | Front: 47.955-47.975 mm (1.8880-1.8888 in) 2nd: 46.455-46.475 mm (1.8289-1.8297 in) 3rd: 44.955-44.975 mm (1.7699-1.7707 in) Rear: 43.455-43.475 mm (1.7108-1.7116 in) | |
Maintenance data
| Valve clearance (Cold) | |
| Intake valve | 0.20 mm (0.008 in) |
| Exhaust valve | 0.350 mm (0.014 in) |
| Oil system | |
| Recommended engine oil | 10W-30 |
| Oil type API | – |
| Engine oil capacity (Refill capacity) | 8.0 L (8.45 US. qt, 7.04 Imp. qt.) |
| Oil change interval, km (miles) | 10,000 (6,000) |
| Ignition system | |
| Spark plug | Denso W17EX-U, W17EXR-U, NGK BPR4EY, BP4EY |
| Spark plug gap | 0.8 mm (0.0315 in) |
| Spark plug torque | 18 N·m (1.8 kg·m, 13.3 ft·lb) |
Vehicle applications
| Model | Years Produced |
| Toyota FA100/110/115 Truck | 1975- |
| Toyota FC100 Truck 3t | – |
| Land Cruiser 40-series | 1975-1984 |
| Land Cruiser 55 | 1975-1980 |
| Land Cruiser 60-series | 1980-1984 |
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