Toyota 1GR-FE (4.0 L, V6, DOCH) Engine Specs, Review & Service Data

Toyota 1GR-FE Engine Specs

The Toyota 1GR-FE is a 4.0 L (241.41 cu·in, 3,956 cc) V6, four-stroke cycle, water-cooled, naturally aspirated gasoline engine that the Toyota Motor Corporation has made since 2002.

This engine was made at Toyota Motor Manufacturing Alabama, the Shimoyama Plant, the Kamigo Plant, and the Tahara Plant. The Toyota 1GR-FE engine has six cylinders in a V shape with a bank angle of 60°.

The Toyota 1GR-FE has a lightweight die-cast aluminum block with a four-bearing crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder (24 in total).

The Toyota 1GR-FE engine has an SFI (Sequential Multiport Fuel Injection) system, a Direct Ignition System (DIS) with individual coils on each spark plug, and a VVTi (Variable Valve Timing) system for the intake camshafts.

A newer version of this engine came out in 2009. It has a Dual VVT-i system on both the intake and exhaust sides.

The Toyota 1GR-FE engine has a cylinder bore of 94.0 mm (3.7 in) and a piston stroke of 95.0 mm (3.74 in).

This gives it a displacement of 3,956 cc (241.41 cuin). For engines with VVT-i, the compression ratio rating is 10.0:1, and for engines with Dual VVT-i, it is 10.4:1.

Depending on the year and vehicle model, the maximum power of the Toyota 1GR-FE engine was 240 PS (176 kW; 236 HP) at 5,200 rpm or 290 PS (213 kW; 285 HP) at 5,600 rpm. The maximum torque was 367 Nm (37.4 kgm; 270 ftlb) at 4,000 rpm or 377 Nm (38.4 kgm; 277.8 ft)

The breakdown of the Toyota 1GR-FE engine code is as follows:

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

Toyota 1GR-FE Engine Specs

Toyota 1GR-FE (4.0 L, V6, DOCH) Engine Specs

Engine Specifications

Engine code 1GR-FE
Layout Four stroke, V6, DOHC
Fuel type Gasoline (petrol)
Production 2002-
Displacement 4.0 L, 3,956 cm<sup3< sup=””>> (241.4 cu in)</sup3<>
Fuel system Sequential multi-point fuel injection (MPFI)
Power adder None
Power output From 240 PS (176 kW; 236 HP) at 5,200 rpm
to 290 PS (213 kW; 285 HP) at 5,600 rpm
Torque output From 367 N·m (37.4 kg·m, 270 ft·lb) at 4,000 rpm
to 377 N·m (38.4 kg·m, 277.8 ft·lb) at 4,400 rpm
Firing order 1-2-3-4-5-6
Dimensions (L x W x H):
Weight 166 kg (366 lbs)

Cylinder head (VVT-i)

Block head alloy Aluminium
Valve Arrangement: DOHC, chain drive
Cylinder head height:
Valves: 24 (4 valves per cylinder)
Intake valve timing
(Intake valve timing control-OFF):
Exhaust valve timing:
Valve head diameter: INTAKE
EXHAUST
Valve length: INTAKE 106.95 mm (4.2106 in)
EXHAUST 105.80 mm (4.1653 in)
Valve stem diameter: INTAKE 5.470-5.485 mm (0.2154-0.2159 in)
EXHAUST 5.465-5.480 mm (0.2152-0.2157 in)
Valve spring free length: INTAKE 47.80 mm (1.8819 in)
EXHAUST 47.80 mm (1.8819 in)
Camshaft lobe height: INTAKE 44.168-44.268 mm (1.7389-1.7428 in)
EXHAUST 44.580-44.680 mm (1.7551-1.7591 in)
Camshaft journal diameter: № 1 35.971-35.985 mm (1.4162-1.4167 in)
Other 22.959-22.975 mm (0.9039-0.9045 in)

Cylinder block (VVT-i)

Cylinder block alloy Aluminium
Compression ratio: VVT-i: 10.0:1
Dual VVT-i: 10.4:1
Cylinder bore: 94.0 mm (3.7 in)
Piston stroke: 95.0 mm (3.74 in)
Number of piston rings (compression / oil): 2 / 1
Number of main bearings: 4
Cylinder inner diameter (standard): 94.000-94.012 mm (3.7008-3.7013 in)
Piston skirt diameter (standard): 93.910-93.940 mm (3.6972-3.6984 in)
Piston compression height:
Piston pin outer diameter: 21.977-22.006 mm (0.8652-0.8664 in)
Connecting rod bushing inner diameter: 22.005-22.014 mm (0.8663-0.8667 in)
Connecting rod big end diameter:
Connecting rod center distance:
Crankshaft main journal diameter: 71.988-72.000 mm (2.8342-2.8346 in)
Crankpin diameter: 55.992-56.000 mm (2.2044-2.2047 in)
Crankshaft center distance: 47.5 mm (1.87 in)

Main bearing cap bolts tightening procedure and torque specs:

  • Step 1: 61 Nm; 6.2 kg·m; 45 ft·lb
  • Step 2: Turn bolts 90°
  • 12 mm head: 25 Nm; 2.5 kg·m; 18 ft·lb

After securing bearing cap bolts, make sure the crankshaft turns smoothly by hand.

Connecting rod-bearing bolts

  • Step 1: 25 Nm; 2.5 kg·m; 18 ft·lb
  • Step 2: Turn bolts 90°

Maintenance Data

Valve clearance (Cold)
Intake valve (COLD) 0.15-0.25 mm (0.006-0.010 in)
Exhaust valve (COLD) 0.29-0.39 mm (0.0114-0.0154 in)
Compression pressure
Standard 13.3 bar (13.6 kg/m2; 193 psi)
Minimun 10.2 bar (10.4 kg/m2; 148 psi)
Compression differential limit between cylinders 1.0 bar (1.0 kg/m2; 15 psi)
Oil system
Oil consumption , L/1000 km (qt. per miles) up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 5W-30
Oil type API SM “Energy-Conserving”
Engine oil capacity (Refill capacity) With filter change 4.2-4.5 liters
Without filter change 4.9-5.5 liters, depending on vehicle model
Oil change interval, km (miles) 7,500-15,000 (5,000-10,000)
Oil Pressure Idle speed: More than 29 kPa
3,000 rpm: More than 294-539 kPa
Ignition system
Spark plug VVT-i: DENSO: K20HR-U11 or NGK: LFR6C-11;
Dual VVT-i: DENSO: SK20HR-11
Spark plug gap 1.0-1.1 mm (0.0394-0.0433 in)
Spark plug tightening torque 20 N·m (2 kg·m, 14.7 ft·lb)

Valve clearance adjustment data

Figure out how thick the new adjusting valve shim needs to be so that the valve clearance stays within the values given.

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

Intake:
N = R + [M – 0.20 mm (0.008 in)]Exhaust:
N = R + [M – 0.30 mm (0.012 in)]

There are 35 sizes of valve shims, ranging from 5.060 mm (0.1992 in) to 5.740 mm (0.2260 in) in 0.02 mm steps (0.0008 in).

Example (exhaust valve):
R = 5.300 mm
M = 0.520 mm
N = 5.300 + (0.45 – 0.30) = 5.450 mm.

Vehicle Applications

Model Years Produced
VVT-i
Toyota 4Runner 2002-2009
Toyota Hilux Surf 2002-2009
Toyota Land Cruiser (GRJ200) 2007-2011
Toyota Land Cruiser Prado (GRJ120/121/125) 2002-2009
Toyota Tacoma (GRN225/245/250/265/270) 2004–2015
Toyota Hilux (GGN10/20) 2005-2015
Toyota Tundra (GSK30) 2005-2006
Toyota Tundra (GSK50/51) 2006-2009
Toyota Fortuner (GGN50/60) 2005–2015
Toyota FJ Cruiser (GSJ10/15) 2006-2009
Toyota Hilux 2015-
Dual VVT-i
Toyota 4Runner (GRN280/285) 2009–
Toyota FJ Cruiser 2009–2017
Toyota Tundra (GSK50/51) 2010–
Toyota Land Cruiser 2012–
Lexus GX 400 (GRJ150) 2012–
Toyota Land Cruiser 70 30th Anniversary Edition 2014-2015
Toyota Fortuner 2015–
Toyota Land Cruiser Prado (GRJ150/150R/155) 2009–

Also Check:

Final Words

This concludes our discussion of the Toyota 1GR-FE (4.0 L, V6, DOCH) engine specs and review; however, if you have any questions regarding this article, please submit them in the comment section below. We will do our best to respond to you as soon as possible.

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