Toyota 1G-GTE

Toyota 1G-GTEThe Toyota 1G-GTE is a 2.0 L (1,988 cc, 121.3 cu·in) straight-six, twin-turbo four-stroke liquid-cooled internal combustion vertical gasoline engine, manufactured by Toyota from 1988 to 1991.

A 75.0 mm (2.95 in) cylinder bore and 75.0 mm (2.95 in) piston stroke give the 1G-GTE engine a total of 1,988 cc of displacement. The compression ratio rating is 8.5:1.

The Toyota 1G-GTE engine produced 210 PS (154 KW; 206.5 HP) at 6,200 rpm of maximum horsepower and 275 Nm (28.05 kg·m; 202.95 ft·lb) at 3,800 rpm of peak torque.

The Toyota 1G-GTE features:

  • Cast-iron cylinder block
  • Aluminum cylinder head
  • DOHC design (Dual belt-driven overhead camshafts)
  • Two CT12S turbochargers
  • Multi-Point fuel injection
  • Forced lubrication system
  • Liquid cooling system
  • Electric starter

General information

Engine Specifications
Engine model1G-GTE
Engine type4-stroke, DOHC, straight-six
Displacement2.0 L, 1,988 cm3 (121.3 cu in)
Max. horsepower210 PS (154 KW; 206.5 HP) at 6,200 rpm
Max. torque275 Nm (28.05 kg·m; 202.95 ft·lb) at 3,800 rpm
Cooling systemLiquid-cooled
Lubricating systemForced lubrication
Ignition system
Fuel systemMulti-Point fuel injection)
Power adderTwo CT12S turbochargers
Fuel usedGasoline
Starting systemElectric starter
Firing order:1-5-3-6-2-4
Dimensions (L x W X H)
Dry weight215 kg (474 lbs)

Cylinder Block and Head

Cylinder block
Cylinder block alloy:Cast-iron
Compression ratio:8.5:1
Cylinder bore:75.0 mm (2.95 in)
Piston stroke:75.0 mm (2.95 in)
Cylinder internal diameter (standard): №1,6: 74.990-75.000 mm (2.9524-2.9528 in)
№2,3,4,5: 75.000-75.010 mm (2.9528-2.9532 in)
Piston skirt outer diameter (standard):74.935-74.945 mm (2.9502-2.9506 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):0.020-0.060 mm (0.0008-0.0023 in)
Ring end gap (Top): №1,6: 0.220-0.430 mm (0.0086-0.0169 in)
№2,3,4,5: 0.250-0.460 mm (0.0098-0.0181 in)
Ring end gap (Second): №1,6: 0.170-0.410 mm (0.0066-0.0161 in)
№2,3,4,5: 0.200-0.440 mm (0.0078-0.0173 in)
Ring end gap (Oil): №1,6: 0.170-0.760 mm (0.0066-0.0299 in)
№2,3,4,5: 0.200-0.790 mm (0.0078-0.0311 in)
Number of main bearings:7
Crankshaft main journal diameter: №4: 54.977-54.992 mm (2.1644-2.1650 in)
Other: 54.985-55.000 mm (2.1647-2.1653 in)
Crankpin journal diameter:41.985-42.000 mm (1.6529-1.6535 in)
Cylinder head
Cylinder head alloy:Aluminum
Valve arrangement:DOHC, belt driven
Valves:4,(24 valves in total)
Valve head diameter (INTAKE):
Valve head diameter (EXHAUST):
Valve length (INTAKE):93.800-94.600 mm (3.6929-3.7244 in)
Valve length (EXHAUST):93.850-94.650 mm (3.6949-3.7264 in)
Valve steam diameter (INTAKE):5.960-5.975 mm (0.2346-0.2352 in)
Valve steam diameter (EXHAUST):5.955-5.970 mm (0.2344-0.2350 in)
Valve spring free length (INTAKE):43.85 mm (1.7264 in)
Valve spring free length (EXHAUST):43.85 mm (1.7264 in)
Camshaft lobe height (INTAKE):35.360-35.460 mm (1.3921-1.3961 in)
Camshaft lobe height (EXHAUST):35.360-35.460 mm (1.3921-1.3961 in)
Camshaft journal diameter:26.960-26.975 mm (1.0614-1.0620 in)

Tightening torque

Tightening torque specs
Cylinder head:64 Nm (6.5 kg·m; 47.2 lb·ft)
Main bearing cap bolts:60 Nm (6.1 kg·m; 44.3 lb·ft)
Connecting rods cap bolts:50 Nm (5.1 kg·m; 36.9 lb·ft)
Spark plug:18 N·m (1.8 kg·m, 13.3 lb·ft)

Service Data

Valve clearance
Intake valve clearance:0.15-0.25 mm (0.0060-0.0100 in)
Exhaust valve clearance:0.20-0.30 mm (0.0078-0.0118 in)
Cylinder compression pressure
Standard:11.5 kg/cm2, 163 psi/ 300 rpm
Minimum:9.0 kg/cm2, 128 psi/ 300 rpm
Oil system
Lubrication system:Forced lubrication
Recommended engine oil, SAE:10W-30
Oil type, API:SG or better
Engine oil capacity: 4.0 liters (4.23 US.qts, 3.52 Imp. qts)
4.5 liters (4.76 US.qts, 3.96 Imp. qts)
depending on model
Oil change interval, km (miles):10,000 (6,000)
Ignition system
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 lb·ft)

Valve clearance adjustment data

Calculate the thickness of the new adjusting valve lifter so valve clearance comes within specified values.

R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance

N = R + [M – 0.20 mm (0.008 in)]
N = R + [M – 0.25 mm (0.010 in)]

For 1G-GTE engine valve lifters are available in 27 sizes to range from 2.00 mm (0.0787 in) to 3.30 mm (0.1299 in), in steps of 0.05 mm (0.0019 in).

Vehicle applications

ModelYears Produced
Toyota Cresta (X80)1988-1990
Toyota Chaser (X80)1988-1990
Toyota Soarer (Z20)1988-1991
Toyota Mark II (X80)1988-1990
Toyota Supra (A70)1988-1991
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.

ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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