Toyota 1G-E

Toyota 1G-EThe 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 code1G-E
LayoutFour stroke, Inline-6 (Straight-6)
Fuel typeGasoline
Displacement2.0 L, 1,988 cm3 (121.3 cu in)
Fuel systemMulti-point fuel injection system
Power adderNone
Max. horsepower105.0 PS (77 KW; 103.5 HP) at 5,200 rpm
Max. torque160 Nm (16.32 kg·m; 118.08 ft·lb) at 4,000 rpm
Firing order1-5-3-6-2-4
Dimensions (L x H x W):
Weight180 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 alloyCast-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:Top0.040-0.080 mm (0.0016-0.0031 in)
Second0.030-0.070 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
Valve length:INTAKE93.100-93.700 mm (3.6653-3.689 in)
EXHAUST93.000-93.600 mm (3.6614-3.685 in)
Valve stem diameter:INTAKE5.970-5.985 mm (0.235-0.2356 in)
EXHAUST5.965-5.980 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
Minimun10.0 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 oil10W-30
Oil type APISG 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 gap0.7-0.8 mm (0.027-0.031 in)
Spark plug torque18 N·m (1.8 kg·m, 13.3 ft·lb)

Vehicle applications

ModelYears Produced
Toyota Cressida (X70)1984-1988
Toyota Crown (S130)1987-1991
Toyota Mark II Van (X70)1984-1991
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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