The Toyota 1G-E is a 2.0 L (1,988 cc, 121.3 cu·in) straight-six, four-stroke cycle natural aspirated gasoline engine from the Toyota G-family. The engine was manufactured by Toyota Motor Corporation from 1984 to 1991.
The Toyota 1G-E engine features a cast-iron cylinder block, aluminum cylinder head with single belt-driven overhead camshafts (SOHC) and two valves per cylinder (12 in total). The 1G-E is equipped with an electronic fuel injection system. Cylinder bore and piston stroke are 75.0 mm (2.95 in) and 75.0 mm (2.95 in), respectively. Compression ratio rating is 9.2:1.
This engine produced 105.0 PS (77 KW; 103.5 HP) at 5,200 rpm of maximum horsepower and 160 Nm (16.32 kg·m; 118.08 ft·lb) at 4,000 rpm of peak torque.
The breakdown of the engine code is as follows:
- 1 – 1 generation engine
- G – Engine family
- E – Multi-Point Fuel Injection
General information
| Engine Specifications | |
| Engine code | 1G-E |
| Layout | Four stroke, Inline-6 (Straight-6) |
| Fuel type | Gasoline |
| Production | 1984-1991 |
| Displacement | 2.0 L, 1,988 cm3 (121.3 cu in) |
| Fuel system | Multi-point fuel injection system |
| Power adder | None |
| Max. horsepower | 105.0 PS (77 KW; 103.5 HP) at 5,200 rpm |
| Max. torque | 160 Nm (16.32 kg·m; 118.08 ft·lb) at 4,000 rpm |
| Firing order | 1-5-3-6-2-4 |
| Dimensions (L x H x W): | – |
| Weight | 180 kg (397 lbs) |
Cylinder block
The Toyota 1G-E engine has a cast-iron cylinder block, bore is 75.0 mm (2.95 in) and the piston stroke is 75.0 mm (2.95 in). Compression ratio rating is 9.2:1. The cylinder block, a monoblock specially cast structure, employs the seven bearing support system. The crankshaft has seven journals. The pistons are aluminum casting. Each piston is fitted with two compression rings and a single oil ring.
| Cylinder block | ||
| Cylinder block alloy | Cast-iron | |
| Compression ratio: | 9.2:1 | |
| Cylinder bore: | 75.0 mm (2.95 in) | |
| Piston stroke: | 75.0 mm (2.95 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 7 | |
| Cylinder inner diameter (standard): | 75.000-75.030 mm (2.9528-2.9539 in) | |
| Piston skirt diameter (standard): | 74.955-74.985 mm (2.9510-2.9520 in) | |
| Piston pin outer diameter: | – | |
| 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 |
NPR: 0.150-0.390 mm (0.0059-0.0153 in) Riken: 0.150-0.440 mm (0.0059-0.0173 in) |
| Second |
NPR: 0.150-0.390 mm (0.0059-0.0153 in) Riken: 0.100-0.390 mm (0.0039-0.0153 in) |
|
| Oil |
NPR: 0.200-0.590 mm (0.0079-0.0232 in) Riken: 0.300-0.990 mm (0.0118-0.0390 in) |
|
| Crankshaft main journal diameter: | 54.985-55.000 mm (2.1647-2.1653 in) | |
| Crankpin diameter: | 41.985-42.000 mm (1.6529-1.6535 in) | |
Main bearing cap bolts torque specs:
- 60 Nm; 6.1 kg·m; 44.3 ft·lb
Connecting rods cap bolts torque specs:
- 50 Nm 5.1 kg·m; 36.9 ft·lb
Cylinder head
The cylinder head is made of a light, strong aluminum alloy with good cooling efficiency. The 1G-E engine has double camshafts (SOHC) and two valves per cylinder (12 valves in total).
| Cylinder head alloy: | Aluminum | |
| Valve Arrangement: | SOHC, belt drive | |
| Valves: | 12 (2 valves per cylinder) | |
| Intake duration: | – | |
| Exhaust duration: | – | |
| Valve head diameter: | INTAKE | – |
| EXHAUST | – | |
| Valve length: | INTAKE | 93.100-93.700 mm (3.6653-3.689 in) |
| EXHAUST | 93.000-93.600 mm (3.6614-3.685 in) | |
| Valve stem diameter: | INTAKE | 5.970-5.985 mm (0.235-0.2356 in) |
| EXHAUST | 5.965-5.980 mm (0.2348-0.2354 in) | |
| Valve spring free length: |
Inner 35.50 mm (1.3976 in) Outer 38.00 mm (1.4960 in) |
|
Cylinder head torque specs:
- 60-70 Nm (6.1-7.1 kgf·m; 44.3-51.7 ft·lb)
Maintenance data
| Compression pressure | |
| Standard | 13.0 kg/cm2 / 300 rpm |
| Minimun | 10.0 kg/cm2 / 300 rpm |
| Oil system | |
| Oil consumption , L/1000 km (qt. per miles) | up to 0.5 (1 qt. per 1200 miles) |
| Recommended engine oil | 10W-30 |
| Oil type API | SG or better |
| Engine oil capacity (Refill capacity) | 3.9 liters (4.12 US.qts, 3.43 Imp. qts)/td> |
| Oil change interval, km (miles) | 10,000 (6,000) |
| Ignition system | |
| Spark plug | DENSO W20EXR-U, NGK BPR6EY |
| Spark plug gap | 0.7-0.8 mm (0.027-0.031 in) |
| Spark plug torque | 18 N·m (1.8 kg·m, 13.3 ft·lb) |
Vehicle applications
| Model | Years Produced |
| Toyota Cressida (X70) | 1984-1988 |
| Toyota Crown (S130) | 1987-1991 |
| Toyota Mark II Van (X70) | 1984-1991 |
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