The Toyota 1S-i, 1S-iL, 1S-iLU is a 1.8 L (1,832 cc, 111.8 cu-in) straight-four, natural aspirated four-stroke liquid-cooled internal combustion vertical gasoline engine from the Toyota S-series. This engine has been manufactured by Toyota Motor Corporation since 1984.
Cylinder bore and piston stroke are 80.5 mm (3.17 in) and 90.0 mm (3.54 in), respectively. Compression ratio rating is 90.0:1.
This engine produced 85.0 PS (63 KW; 84.5 HP) at 5,200 rpm or 105.0 PS (77 KW; 103.5 HP) at 5,400 rpm of horsepower and from 142 Nm (14.5 kg·m; 104.8 ft·lb) at 3,000 rpm to 160 Nm (16.3 kg·m; 118.1 ft·lb) at 3,000 rpm of torque.
The Toyota 1NZ-FE features:
- Cast-iron cylinder block
- Aluminum cylinder head
- SOHC design (8 valves, 2 per cylinder)
- Hydraulic valve lifters
- Single-point fuel injection system (Central injection)
- Ignition system with mechanical distributor
- Liquid cooling system
- Electric starter
General information
| Engine Specifications | |
| Engine model | 1S-i, 1S-iL, 1S-iLU, 3S-Ci |
| Engine type | 4-stroke, OHV, straight-four |
| Displacement | 1.8 L, 1,832 cm3, (111.8 cu·in) |
| Max. horsepower | 85.0 PS (63 KW; 84.5 HP) at 5,200 rpm 105.0 PS (77 KW; 103.5 HP) at 5,400 rpm |
| Max. torque | 142 Nm (14.5 kg·m; 104.8 ft·lb) at 3,000 rpm 157 Nm (16.0 kg·m; 115.9 ft·lb) at 3,000 rpm 160 Nm (16.3 kg·m; 118.1 ft·lb) at 3,000 rpm |
| Power adder | None |
| Cooling system | Liquid-cooled |
| Lubricating system | Forced lubrication |
| Ignition system | With mechanical distributor |
| Fuel system | Single-point fuel injection system |
| Fuel used | Gasoline |
| Starting system | Electric starter |
| Firing order: | 1-3-4-2 |
| Dimensions (L x W X H) | – |
| Dry weight | – |
Cylinder Block and Head
| Cylinder block | |
| Cylinder block alloy: | Cast-iron |
| Compression ratio: | 9.0:1 |
| Cylinder bore: | 80.5 mm (3.17 in) |
| Piston stroke: | 90.0 mm (3.54 in) |
| Cylinder internal diameter (standard): | 80.500-80.530 mm (3.1693-3.1705 in) |
| Piston skirt outer diameter (standard): | 80.443-80.473 mm (3.1670-3.1682 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Ring side clearance (Top): | 0.030-0.070 mm (0.0012-0.0027 in) |
| Ring side clearance (Second): | 0.030-0.070 mm (0.0012-0.0028 in) |
| Ring end gap (Top): | 0.270-0.500 mm (0.0106-0.0197 in) |
| Ring end gap (Second): | 0.200-0.450 mm (0.0079-0.0177 in) |
| Ring end gap (Oil): | 0.200-0.790 mm (0.0079-0.0311 in) |
| Crankshaft main journal diameter: | 54.985-55.000 mm (2.1648-2.1653 in) |
| Crankpin journal diameter: | 47.985-48.000 mm (1.8892-1.8898 in) |
| Cylinder head | |
| Cylinder head alloy: | Aluminium |
| Valve arrangement: | SOHC, belt drive |
| Valves: | 2,(8 valves in total) |
| Valve head diameter (INTAKE): | – |
| Valve head diameter (EXHAUST): | – |
| Valve length (INTAKE): | 109.7 mm (4.319 in) |
| Valve length (EXHAUST): | 109.3 mm (4.303 in) |
| Valve steam diameter (INTAKE): | 4.970-4.985 mm (0.1957-0.1963 in) |
| Valve steam diameter (EXHAUST): | 4.965-4.980 mm (0.1955-0.1961 in) |
| Valve spring free length (INTAKE): | 46.71 mm (1.8390 in) |
| Valve spring free length (EXHAUST): | 46.71 mm (1.8390 in) |
| Camshaft lobe height (INTAKE): | 38.926-38.026 mm (1.5325-1.5365 in) |
| Camshaft lobe height (EXHAUST): | 38.926-38.026 mm (1.5325-1.5365 in) |
| Camshaft journal diameter: | № 1: 46.459-46.475 mm (1.8291-1.8297 in) № 2: 46.209-46.225 mm (1.8192-1.8199 in) № 3: 45.959-45.975 mm (1.8094-1.8100 in) № 4: 45.709-45.725 mm (1.7996-1.8002 in) № 5: 45.459-45.475 mm (1.7897-1.7904 in) № 6: 45.209-45.225 mm (1.7799-1.7805 in) |
Service Data
| Cylinder compression pressure | |
| Standard: | 12.5 kg/m2 (1,226 kPa, 213 psi) / 280 rpm |
| Minimum: | 9.0 kg/m2 (883 kPa, 156 psi) / 250 rpm |
| Compression differential limit between cylinders: | 1.0 kg/m2 (98 kPa 14 psi) / 250 rpm |
| Oil system | |
| Lubrication system: | Forced lubrication |
| Recommended engine oil SAE: | 5W-30, 10W-30 |
| Oil type API: | SF, SG or higher |
| Oil capacity: | With oil filter: 4.0 liters (4.23 US.qts, 3.52 Imp. qts) Without oil filter: 3.6 liters (3.8 US.qts, 3.17 Imp. qts) |
| Oil change interval, km (miles): | 5,000-10,000 (3,000-6,000) |
| Oil pressure: | At Idling speed: 0.3 kg/m2 (29 kPa, 4.3 psi) or more At 3,000 rpm: 2.5-5.0 kg/m2 (36-71 kPa, 245-490 psi) |
| Ignition system | |
| Ignition timing: | 5° B.T.D.C. (for Toyota Camry/Vista SV20) |
| Spark plug: | DENSO: BRE527Y-11, NGK: J16AR-11 |
| Spark plug gap: | 1.1 mm (0.043 in) |
Tightening torque specs
| Tightening torque specs | Cylinder head | 64 Nm (6.5 kgf·m; 47.2 ft·lb) |
| Camshaft timing pulley | 54 Nm (5.5 kgf·m; 39.9 ft·lb) |
| Main bearing cap bolts | 60 Nm (6.1 kgf·m; 44 ft·lb) |
| Connecting rod bearing bolts | 49 Nm (5.0 kgf·m; 36.2 ft·lb) |
| Crankshaft pulley pulley | 108 Nm (11 kgf·m; 79.7 ft·lb) |
Vehicle applications
| Model | Years Produced |
| Toyota Camry (SV10) | – |
| Toyota Vista (SV10) | – |
| Toyota Camry (SV20) | – |
| Toyota Vista (SV20) | – |
| Toyota Carina (ST150) | – |
| Toyota Carina ED (ST160) | – |
| Toyota Celica (ST160) | – |
| Toyota Corona (ST150) | – |
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