Toyota 1GR-FE Engine Specifications
The Toyota 1GR-FE is a 4.0 L (3,956 cc, 241.41 cubic inches) V6,
four-stroke cycle water-cooled naturally aspirated internal combustion
gasoline engine, manufactured by the Toyota Motor Corporation since
2002. This engine was producted on Kamigo Plant, Shimoyama Plant, Tahara
Plant and Toyota Motor Manufacturing Alabama.
The engine has 6 cylinders in a V arrangement at a bank angle of
60° The 1GR-FE features a lightweight die-cast aluminum block with a
four-bearings crankshaft and two aluminum heads with two camshafts
(DOHC) and four valves per cylinder (24 in total). The Toyota 1GR-FE
engine is equipped with SFI (Sequential Multiport Fuel Injection)
system, Direct Ignition System (DIS) with individual coils on each spark
plug and VVTi (Variable Valve Timing) system for the intake camshafts.
In 2009, an updated version of this engine was introduced, it is
equipped with Dual VVT-i system on both intake and exhaust sides.
A 94.0 mm (3.7 in) cylinder bore and 95.0 mm (3.74 in) piston stroke
give the 1GR-FE engine a total of 3,956 cc (241.41 cubic inches) of
displacement. Compression ratio rating is 10.0:1 for engines with VVT-i
and 10.4:1 for engines with Dual VVT-i.
The Toyota 1GR-FE engine produced from 240 PS (176 kW; 236 HP) at 5,200
rpm to 290 PS (213 kW; 285 HP) at 5,600 rpm of maximum power and from
367 Nm (37.4 kgm, 270 ft-lb) at 4,000 rpm to 377 Nm (38.4 kgm, 277.8
ft-lb) at 4,400 rpm of peak torque, depending on year and vehicle model.
The breakdown of the engine code is as follows:
1 – 1nd generation engine
GR – Engine family
F – Economy narrow-angle DOHC
E – Multi Point Fuel Injection
Engine model ...................... 1GR-FE
Cylinder layout ...................... Four stroke, V6, DOHC
Fuel type ...................... Gasoline (petrol)
Year of production ...................... 2002-
Total displacement ...................... 4.0 L, 3,956 cm> (241.4 cu in)
Fuel system ...................... Sequential multi-point fuel injection
(MPFI)
Power adder ...................... None
Maximum power ...................... From 240 PS (176 kW; 236 HP) at
5,200 rpm
to 290 PS (213 kW; 285 HP) at 5,600 rpm
Maximum torque ...................... From 367 Nm (37.4 kgm, 270 ft-lb)
at 4,000 rpm
to 377 Nm (38.4 kgm, 277.8 ft-lb) at 4,400 rpm
Firing order ...................... 1-2-3-4-5-6
Dimensions (L x W x H) ...................... No data available
Weight ...................... 166 kg (366 lbs)
The 1GR-FE engine has an aluminum cylinder block in a V arrangement at a
bank angle of 60°. This engine’s firing order is 1–2–3–4–5–6.
Cylinder bore and piston stroke are 94.0 mm (3.7 in) and 95.0 mm (3.74
in), respectively. Compression ratio rating is 10.0:1 or 10.4:1.
The engine has “spiny type” cast-iron cylinder liners. For the VVT-i
1GR-FE engine, the forged steel crankshaft has four main journals and
nine balance weights. For the dual VVT-i 1GR-FE engine, a five balance
weight crankshaft was used, the locations of the balance weights were
optimized to reduce vibration.
The 1GR-FE engine used forged connecting rods with aluminum bearings.
The connecting rods and caps are made of high-strength steel and used
nutless-type plastic region tightening bolts. The Toyota 1GR-FE engine
has aluminum alloy pistons with “taper squish” shape for the piston
head. For the higher compression ratio of the dual VVT-i 1GR-FE engine
version, the shape of the pistons was optimized.
The Toyota 1GR-FE motor has two compressions and one oil control rings.
The groove of the top piston ring is coated with anodic oxide to improve
wear resistance and rust resistance, and the piston skirt is coated with
resin to reduce friction. Oil-cooling jets under the pistons acted to
reduce piston temperatures.
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 ...................... No data available
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 ...................... No data available
Connecting rod center distance ...................... No data available
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 kgm; 45 ft-lb
Step 2: Turn bolts 90°
12 mm head: 25 Nm; 2.5 kgm; 18 ft-lb
After securing bearing cap bolts, make sure crankshaft turns smoothly by
hand.
Connecting rod bearing bolts
Step 1: 25 Nm; 2.5 kgm; 18 ft-lb
Step 2: Turn bolts 90°
The cylinder heads are made of aluminum alloy with two overhead
camshafts and four valves per cylinder. The 1GR-FE engine camshafts are
made of cast iron alloy. Both the primary and secondary timing chains
used pitch roller chains. The intake camshafts are driven by the
crankshaft via the primary timing chain. The exhaust camshafts are
driven by the intake camshaft of the respective bank via the secondary
timing chain. For the dual VVT-i 1GR-FE, the cam lobes had indented R
profiles to increase valve lift when the valve began to open and as it
finished closing.
For valve actuation, the VVTi 1GR-FE engine used shimless type valve
lifters. The early version of the Toyota 1GR-FE engine is not provided
with hydraulic lifters, so you must control the valve clearances once in
60,000 miles (100,000 km) of mileage.
The dual VVTi 1GR-FE engine used roller rocker arms with built-in needle
bearings that reduced the friction that occurred between the camshafts
and the roller rocker arms. This version of the engine has hydraulic
lash adjusters. Through the use of oil pressure and spring force, the
lash adjuster maintained a constant zero valve clearance.
Block head alloy ...................... Aluminium
Valve Arrangement ...................... DOHC, chain drive
Cylinder head height ...................... No data available
Valves ...................... 24 (4 valves per cylinder)
Intake valve timing
(Intake valve timing control-OFF) ...................... No data available
Exhaust valve timing ...................... No data available
Valve head diameter ...................... INTAKE
...................... No data available
EXHAUST ...................... No data available
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)
Head tightening procedure and torque specs:
Step 1: 36 Nm; 3.6 kgm; 27 ft-lb
Step 2: Turn all bolts 180°
14 mm head: 30 Nm; 3.0 kgm; 22 ft-lb;
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 Nm (2 kgm, 14.7
ft-lb)
Valve clearance adjustment data
Calculate the thickness of new adjusting valve shim so valve clearance
comes within specified values.
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)]
Valve shims are available in 35 sizes to range from 5.060 mm (0.1992 in)
to 5.740 mm (0.2260 in), in steps of 0.02 mm (0.0008 in).
Example (exhaust valve):
R = 5.300 mm
M = 0.520 mm
N = 5.300 + (0.45 – 0.30) = 5.450 mm.
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
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