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Toyota 3UR-FE Engine Specifications
The Toyota 3UR-FE is a 5.7 L (5,663 cc, 345.6 cubic inches) V8,
four-stroke cycle water-cooled naturally aspirated internal combustion
gasoline engine, from the UR-family, manufactured by the Toyota Motor
Corporation since 2006.
The engine has 8 cylinders in a V-arrangement at a bank angle of
90 deg. The 3UR-FE features die-cast aluminum cylinder block with a
five-bearings crankshaft and two aluminum heads with two chain-driven
camshafts (DOHC) and four valves per cylinder (32 in total). The Toyota
3UR-FE engine is equipped with L-type sequential fuel injection (SFI)
system, Direct Ignition System (DIS) ignition system with individual
coils on each spark plug, Acoustic Control Induction System (ACIS),
Electronic Spark Advance (ESA) and ETCS-i (Electronic Throttle Control
System-intelligent). The engine also used a Dual VVT-i (Variable Valve
Timing) system for the intake and exhaust camshafts.
It has a 94.0 mm (3.7 in) cylinder bore and 102.0 mm (4.02 in) piston
stroke. Compression ratio rating is 10.2:1.
This engine produced from 362 PS (266 kW; 357 HP) at 5,600 rpm to 383 PS
(282 kW; 378 HP) at 5,600 rpm of maximum horsepower and from 530 Nm (54
kgm, 391 ft-lb) at 3,200 rpm to 546 Nm (55.7 kgm, 402 ft-lb) at 3,600
rpm of peak torque depending on year and vehicle model.
Engine code identification:
3 - 3rd generation engine
UR - Engine family
F - Economy narrow-angle DOHC
E - Multi Point Fuel Injection
| GENERAL TECHNICAL DATA |
Engine model ...................... 3UR-FE
Cylinder layout ...................... Four stroke, V8
Fuel type ...................... Gasoline (petrol)
Year of production ...................... 2006
Total displacement ...................... 5.7 L, 5,663 cm2 (345.6 cubic inches)
Fuel system ...................... Sequential multi-point fuel injection
(SFI)
Power adder ...................... None
Maximum power ...................... From 362 PS (266 kW; 357 HP) at
5,600 rpm
to 383 PS (282 kW; 378 HP) at 5,600 rpm
Maximum torque ...................... From 530 Nm (54 kgm, 391 ft-lb) at
3,200 rpm
to 546 Nm (55.7 kgm, 402 ft-lb) at 3,600 rpm
Firing order ...................... 1-8-7-3-6-5-4-2
Dimensions (L x W x H) ...................... No data available
Weight ...................... 220 kg (485 lbs)
| CYLINDER BLOCK |
The 3UR-FE engine has a die-cast aluminum cylinder block in a V
arrangement at a bank angle of 90 deg.. This engine’s firing order is
1-8-7-3-6-5-4-2. The crankshaft is supported by five main bearings.
These bearings are made of aluminum alloy. The engine is equipped with
forged steel crankshaft with five journals and six balance weights.
The 3UR-FE engine used forged connecting rods with resin-coated aluminum
bearings. Pistons are made of high temperature-resistant aluminum alloy
and they are cooled by four oil jets in the cylinder block. Piston pins
are the full-floating type. The Toyota 3UR-FE motor has two compression
and one oil control rings.
Bore and stroke are 94.0 mm (3.7 in) and 102.0 mm (4.02 in),
respectively. Compression ratio rating is 10.2:1.
Cylinder block alloy ...................... Aluminum
Compression ratio ...................... 10.2:1
Cylinder bore ...................... 94.0 mm (3.7 in)
Piston stroke ...................... 83.0 mm (3.27 in)
Number of piston rings (compression / oil) ...................... 2 / 1
Number of main bearings ...................... 5
Cylinder inner diameter (standard) ...................... 94.000-94.012
mm (3.700-3.701 in)
Piston skirt diameter (standard) ...................... 93.950-93.960
mm (3.6988-3.6992 in)
Piston pin outer diameter ...................... 21.997-22.000 mm
(0.866-0.8661 in)
Connecting rod bushing inner diameter ...................... 22.000 mm
(0.8661 in)
Connecting rod big end diameter ...................... 59.000 mm
(2.3228 in)
Piston ring side clearance ...................... Top
...................... 0.020-0.070 mm (0.0008-0.027 in)
Second ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Oil ...................... 0.070-0.145 mm (0.0028-0.0057 in)
Piston ring end gap ...................... Top ......................
0.22-0.33 mm (0.0087-0.013 in)
Second ...................... 0.35-0.50 mm (0.0138-0.0197 in)
Oil ...................... 0.10-0.40 mm (0.0039-0.0157 in)
Crankshaft main journal diameter ...................... 66.988-67.000
mm (2.6373-2.6378 in)
Crankpin diameter ...................... 55.982-56.000 mm (2.204-2.2047
in)
Main bearing cap bolts tightening procedure and torque specs:
Step 1:
Inside: 61 Nm; 6.2 kgm; 45 ft-lb
Outside: 27 Nm; 2.7 kgm; 20 ft-lb
Step 2: Turn bolts 90 deg.
Cylinder block side 45 Nm; 4.6 kgm; 33 ft-lb
After securing bearing cap bolts, make sure crankshaft turns smoothly by
hand.
Connecting rod bearing bolts
Step 1: 40 Nm; 4.0 kgm; 30 ft-lb
Step 2: Turn bolts 90 deg.
| CYLINDER HEAD |
The cylinder heads are made of aluminum alloy. The 3UR-FE engine has
dual overhead camshafts design (DOHC) with four valves per cylinder (2
intakes and 2 exhaust). The 3UR-FE engine used primary timing chains for
the intake camshafts and each exhaust camshaft is driven by a secondary
timing chain from the intake camshaft. The 3UR-FE engine had Dual VVT-i
to control the intake and exhaust camshafts.
Intake duration is 248 degrees and exhaust duration is 242 degrees. For
valve clearance adjustment this engine used hydraulic lash adjuster
which is actuated by engine oil supplied from the cylinder head and an
integrated spring.
Block head alloy ...................... Aluminium
Valve Arrangement ...................... DOHC, chain drive
Cylinder head height ...................... No data available
Valves ...................... 32 (4 valves per cylinder)
Intake valve timing ...................... 248 deg.
Exhaust valve timing ...................... 242 deg.
Valve head diameter ...................... INTAKE
...................... 38.0 mm (1.496 in)
EXHAUST ...................... 34.5 mm (1.260 in)
Valve length ...................... INTAKE ......................
105.85 mm (4.17 in)
EXHAUST ...................... 110.40 mm (4.35 in)
Valve stem diameter ...................... INTAKE
...................... 5.470-5.485 mm (0.215-0.216 in)
EXHAUST ...................... 5.465-5.480 mm (0.2152-0.2157 in)
Valve spring free length ...................... INTAKE
...................... 49.39 mm (1.9445 in)
EXHAUST ...................... 49.39 mm (1.9445 in)
Camshaft lobe height ...................... INTAKE
...................... 44.291-44.441 mm (1.7437-1.7496 in)
EXHAUST ...................... 44.196-44.346 mm (1.74-1.7459 in)
Camshaft journal diameter ...................... №1
...................... 29.956-29.970 mm (1.1794-1.1799 in)
Other ...................... 25.959-25.975 mm (1.022-1.0226 in)
Head tightening procedure and torque specs:
Step 1: 36 Nm; 3.67 kgm; 27 ft-lb
Step 2: Turn all bolts 90 deg.
Step 3: Turn all bolts another 90 deg.
For 12 mm head: 21 Nm; 2.14 kgm; 15 ft-lb
| MAINTENANCE DATA |
Compression pressure
Standard ...................... 13.3 kg/cm2, (189 psi) / 300 rpm
Minimun ...................... 10.2 kg/cm2, (145 psi) / 300 rpm
Compression differential limit between cylinders ......................
1.0 kg/cm2, (15 psi) / 300 rpm
Oil system
Oil consumption , L/1000 km ...................... up to 1.0
Recommended engine oil ...................... SAE 0W-20, 5W-20, 5W-30,
10W-30
Oil type API ...................... SL, SM, SN
Engine oil capacity (Refill capacity) ...................... With filter
change: 7.5 l (7.9 US. qts, 6.6 Imp. qts)
Without filter change: 7.1 l (7.5 US. qts, 6.2 Imp. qts).
Oil change interval, km (miles) ...................... 10,000 (6,000)
Oil Pressure ...................... Idle speed: 70 kPa (0.7 kgf/cm2,
10.1 psi) or more
2,500 rpm: 220 kPa (2.2 kgf/cm2, 32 psi) or more
Ignition system
Spark plug ...................... DENSO: SK20R11.
Spark plug gap ...................... 1.0-1.1 mm (0.0394-0.0433 in.)
Spark plug tightening torque ...................... 21 Nm (2.14 kgm, 15
ft-lb)
| VEHICLE APPLICATIONS |
Model ...................... Years Produced
Toyota Tundra ...................... 2006
Toyota Sequoia ...................... 2007
Toyota Land Cruiser 200 ...................... 2007
Lexus LX 570 ...................... 2007
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| Engines Technical Specifications |