The Toyota 2F is a 4.2 L (4,230 cc, 258.1 cu·in) straight-six, natural aspirated four-stroke liquid-cooled internal combustion vertical gasoline engine, manufactured by Toyota from 1949 to 1975.
Cylinder bore and piston stroke are 94.0 mm (3.7 in) and 101.6 mm (4.00 in), respectively. Compression ratio rating is 7.8:1 or 8.2:1.
This engine produced from 125.0 PS (92 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 N·m (27.6 kg·m, 199.7 ft·lb) at 1,800 rpm to 294 N·m (30 kg·m, 216.7 ft·lb) at 1,800 rpm of torque.
The Toyota 2F features:
- Cast-iron cylinder block and head
- OHV design
- Ignition coil and contact breaker ignition system
- Down draft, two-barrel
- Forced lubrication system
- Liquid cooling system
- Electric starter
General information
| Engine Specifications | |
| Engine model | 2F |
| Engine type | 4-stroke, OHV, straight-six |
| Displacement | 4.2 L, 4,230 cm3, (258.1 cu·in) |
| Max. horsepower | From 125.0 PS (92 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 N·m (27.6 kg·m, 199.7 ft·lb) at 1,800 rpm to 294 N·m (30 kg·m, 216.7 ft·lb) at 1,800 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Forced lubrication |
| Ignition system | Coil with contact breaker |
| Fuel system | Down draft, two-barrel |
| Fuel used | Gasoline |
| Starting system | Electric starter |
| Firing order: | 1-5-3-6-2-4 |
| Dimensions (L x W X H) | – |
| Dry weight | 286 kg (630.5 lbs) |
Cylinder Block and Head
| Cylinder block | |
| Cylinder block alloy: | Cast-iron |
| Compression ratio: | 7.8:1 or 8.2:1 |
| Cylinder bore: | 94.0 mm (3.7 in) |
| Piston stroke: | 101.6 mm (4 in) |
| Cylinder internal diameter (standard): | 94.000-94.050 mm (3.7008-3.7027 in) |
| Piston skirt outer diameter (standard): | 93.970-94.020 mm (3.6996-3.7016 in) |
| Number of piston rings (compression / oil): | 2/2 |
| Ring groove clearance (Top): | 0.030-0.060 mm (0.0012-0.0024 in) |
| Ring groove clearance (Second): | 0.020-0.060 mm (0.0008-0.0024 in) |
| Ring groove clearance (Oil): | 0.030-0.070 mm (0.0012-0.0028 in) |
| Ring end gap (Top): | 0.200-0.560 mm (0.0079-0.022 in) |
| Ring end gap (Second): | 0.200-0.580 mm (0.0079-0.0228 in) |
| Ring end gap (Oil №1): | 0.150-0.880 mm (0.0059-0.0346 in) |
| Number of main bearings: | 4 |
| 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 journal diameter: | 53.980-54.000 mm (2.1252-2.126 in) |
| Cylinder head | |
| Cylinder head alloy: | Сast-iron |
| Valve head face angle (INTAKE): | 45° |
| Valve head face angle (EXHAUST): | 45° |
| Valve length (INTAKE): | 124.5-125.1 mm (4.9016-4.9252 in) |
| Valve length (EXHAUST): | 124.7-125.3 mm (4.9094-4.9331 in) |
| Valve arrangement: | OHV, gear driven |
| Valves: | 2,(12 valves in total) |
| Valve head diameter (INTAKE): | 46.0 mm (1.811 in) |
| Valve head diameter (EXHAUST): | 37.5 mm (1.4764 in) |
| Valve head face angle (INTAKE): | 45° |
| Valve head face angle (EXHAUST): | 45° |
| Valve length (INTAKE): | 124.5-125.1 mm (4.9016-4.9252 in) |
| Valve length (EXHAUST): | 124.7-125.3 mm (4.9094-4.9331 in) |
| Valve steam diameter (INTAKE): | 7.970-7.985 mm (0.3138-0.3144 in) |
| Valve steam diameter (EXHAUST): | 7.960-7.975 mm (0.3134-0.314 in) |
| Valve spring free length (INTAKE): | 51.5 mm (2.0276 in) |
| Valve spring free length (EXHAUST): | 51.5 mm (2.0276 in) |
| Camshaft lobe height (INTAKE): | 38.360-38.460 mm (1.5102-1.5142 in) |
| Camshaft lobe height (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) |
| Valve lifter outside diameter: | 25.097-25.120 mm (0.9881-0.9894 in) |
| Valve rocker shaft outer diamet: | 18.479-18.490 mm (0.7275-0.728 in) |
Service Data
| Valve clearance | |
| Intake valve clearance: | 0.20 mm (0.008 in) |
| Exhaust valve clearance: | 0.35 mm (0.014 in) |
| Oil system | |
| Lubrication system: | Forced lubrication |
| Oil capacity: | 8.0 L (8.45 US. qt, 7.04 Imp. qt.) |
| Fuel system | |
| Type: | Down draft, two-barrel |
| Ignition system | |
| Type: | Battery, coil and contact breaker |
| Ignition timing: | 7° B.T.D.C. at 650 rpm |
| 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 lb·ft) |
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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