Toyota 1G-FE

The Toyota 1G-FE 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 1988 to 2005.

The Toyota 1G-FE engine features a cast-iron cylinder block, aluminum cylinder head with dual belt-driven overhead camshafts (DOHC) and four valves per cylinder (24 in total). The 1G-FE 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. The Compression ratio rating is from 8.0:1 to 10.5:1 depending on the engine modification.

The 1G-FE engine generations:

• 1-st gen: The first generation of the 1G-FE was introducted in 1988. This engine produced 135 PS (99 kW; 133 HP) at 5,600 rpm of maximum horsepower and 176 Nm (17.9 kg·m; 129.9 ft·lb) at 4,400 rpm of peak torque.
• 2-nd gen: In 1996 there was the second generation of this engine. The output power increased to 140 PS (103 KW; 138 HP) at 5,600 rpm and 185 Nm (18.9 kg·m; 136.5 ft·lb) at 4,400 rpm of peak torque.
• 3-rd gen: In 1998 was introducted the 3-rd generation with called the 1G-FE BEAMS. This engine used new pistons and connecting rods. This version is equipped with VVT-i (Variable Valve Timing) system on intake camshaft, ACIS (Acoustic Control Induction System) – variation of a Variable Length Intake Manifold system designed by Toyota and electronic throttle body. The output power of this version is 160 PS (118 KW; 158 HP) at 6,200 rpm and 200 Nm (20.4 kg·m; 147.6 ft·lb) at 4,400 rpm of peak torque.

The breakdown of the engine code is as follows:

• 1 – 1 generation engine
• G – Engine family
• F – Economy narrow-angle DOHC
• E – Multi-Point Fuel Injection

General information

Cylinder block

The Toyota 1G-FE 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). 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. The compression ratio rating is from 8.0:1 to 12.5:1.

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-FE engine has double camshafts (DOHC) and four valves per cylinder (24 valves in total). From 1998 the engine was equipped with VVT-i (Variable Valve Timing) system on the intake camshaft. Camshafts are made of specially cast steel and are driven by a timing belt. The 1G-FE motor does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance.

Cylinder head torque specs:

• 64 Nm; 6.5 kg·m; 47.2 ft·lb

Maintenance data

Valve clearance adjustment data

• For non-VVTi 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).
• For VVTi engine valve lifters are available in 35 sizes to range from 5.06 mm (0.1992 in) to 5.74 mm (0.2260 in), in steps of 0.02 mm (0.0008 in).

Vehicle applications

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.