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Toyota 2AZ-FSE Engine Specifications
The Toyota 2AZ-FSE is a 2.4 l (2,362 cc, 144.14 cubic inches) straight-four 4-stroke naturally aspirated gasoline engine from Toyota AZ-family. The Toyota 2AZ-FSE features a lightweight aluminum block with thin cast-iron cylinder liners and 16-valve DOHC aluminum head with four valves per cylinder (two intakes and two exhaust). The engine is equipped with VVT-i (Variable Valve Timing with intelligence) on the intake camshaft, Toyota’s D-4 direct injection system, DIS (Direct Ignition System) with one ignition coil for each spark plug. Cylinder bore and piston stroke are 88.5 mm (3.48 in) and 96.0 mm (3.78 in). Compression ratio rating is 11.0:1. The engine produces 163 PS (120 kW; 161 HP) at 5,800 rpm of maximum horsepower and 231 Nm (23.6 kgm; 170.5 ft-lb) at 3,800 rpm of peak torque.
Engine code identification:
2 – 2-nd generation engine
AZ – Engine family
F – Economy narrow-angle DOHC
S – Gasoline direct injection system (D-4)
E – Multi Point Fuel Injection
| GENERAL TECHNICAL DATA |
Engine model ...................... 2AZ-FSE
Cylinder layout ...................... Four stroke, Inline-4
(Straight-4)
Fuel type ...................... Gasoline (petrol)
Year of production ...................... No data available
Total displacement ...................... 2.4 L, 2,362 cm2 (144.14 cubic
inches)
Fuel system ...................... D-4 direct injection system
Power adder ...................... None
Maximum power ...................... 163 PS (120 kW; 161 HP) at 5,800
rpm
Maximum torque ...................... 231 Nm (23.6 kgm; 170.5 ft-lb) at
3,800 rpm
Firing order ...................... 1-3-4-2
Dimensions (L x W x H) ...................... No data available
Weight ...................... No data available
| CYLINDER BLOCK |
The 2AZ-FSE has an open-deck lightweight aluminum alloy cylinder block
with cast-iron liners and a die-cast aluminum crankcase. The liner is
thin so that boring is not possible. The forged steel crankshaft has
eight counterweights and supported by five main bearings. The crankshaft
is made of forged steel and balance shaft drive gear is installed onto
the crankshaft. The Toyota 2AZ-FSE is equipped with two balance shafts.
The piston is made of aluminum alloy and skirt area is made compact and
lightweight. The connecting rods and caps are made of high strength
steel for weight reduction. Nutless-type plastic region tightening bolts
of the connecting rod are used. The engine used pistons with two
compression and single oil ring. The cylinder bore is 88.5 mm (3.48 in
and the piston stroke is 96.0 mm (3.78 in). Compression ratio rating is
11.0:1.
Cylinder block alloy ...................... Aluminium
Compression ratio ...................... 11.0:1
Cylinder bore ...................... 88.5 mm (3.48 in)
Piston stroke ...................... 96.0 mm (3.78 in)
Number of piston rings (compression / oil) ...................... 2 / 1
Number of main bearings ...................... 5
Cylinder inner diameter (standard) ...................... 88.500-88.513
mm (3.4842-3.3848 in)
Piston skirt diameter (standard) ...................... 88.439-88.449
mm (3.4818-3.4822 in)
Piston pin outer diameter ...................... 21.997-22.009 mm
(0.8660-0.8665 in)
Piston ring side clearance ...................... Top
...................... 0.030-0.080 mm (0.0012-0.0031 in)
Second ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Oil ...................... 0.020-0.070 mm (0.0008-0.0028 in.)
Piston ring end gap ...................... Top ......................
0.22-0.32 mm (0.0087-0.0126 in.)
Second ...................... 0.50-0.60 mm (0.0197-0.0236 in.)
Oil ...................... 0.10-0.35 mm (0.0039-0.0138 in.)
Crankshaft main journal diameter ...................... 54.998-55.000
mm (2.1652-2.1653 in)
Crankpin diameter ...................... 47.990-48.000 mm
(1.8894-1.8898 in)
Main bearing cap bolts tightening procedure and torque specs:
Step 1: 20 Nm; 2.0 kgm; 15 ft-lb
Step 2: 40 Nm; 4.0 kgm; 29 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°
| CYLINDER HEAD |
The cylinder head is made of strong, light aluminum alloy which gives it
good cooling efficiency. Each camshaft is supported by five bearings.
The dual overhead camshafts are driven by a roller chain. The timing
chain is lubricated by an oil jet. Each cylinder is equipped with 2
intake valves and 2 exhaust valves. Valve diameters are 34.0 mm (1.3 in)
for intake and 29.5 mm (1.2 in) for exhaust.
The engine is equipped with lightweight magnesium alloy diecast cylinder
head cover. The cylinder head cover gasket and the spark plug gasket is
integrated to reduce the number of parts. A steel-laminate type cylinder
head gasket is used.
Valve Arrangement ...................... DOHC, chain drive
Valves ...................... 16 (4 valves per cylinder)
Valve head diameter ...................... INTAKE
...................... 34.0 mm (1.3385 in)
EXHAUST ...................... 29.5 mm (1.1614 in)
Valve length ...................... INTAKE ......................
101.71 mm (4.004 in)
EXHAUST ...................... 101.21 mm (3.984 in)
Valve stem diameter ...................... INTAKE
...................... 5.470-5.485 mm (0.2153-0.2159 in)
EXHAUST ...................... 5.465-5.480 mm (0.151 – 0.2157 in)
Valve spring free length ...................... 45.7 mm (1.7990 in)
Outer camshaft journal diameter ...................... №1
...................... 35.971-35.985 mm (1.4162-1.4167 in)
№2, 3, 4, 5 ...................... 22.959-22.975 mm (0.9039-0.9045 in)
Head tightening procedure and torque specs:
Step 1: 79 Nm; 8.0 kgm; 58 ft-lb
Step 2: Turn all bolts 90°
Camshaft bearing cap bolts
№ 1:30 Nm; 3.0 kgm; 22 ft-lb
Other:9 Nm; 0.9 kgm; 6.4 ft-lb
| MAINTENANCE DATA |
Compression pressure
Standard ...................... 13.0 kg/m2 / 200 rpm
Minimun ...................... 11.0 kg/m2 / 200 rpm
Compression differential limit between cylinders ......................
1.0 kg/m2 / 200 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles) ...................... up to
0.5 (1 qt. per 1200 miles)
Recommended engine oil ...................... 5W-20, 5W-30, 10W-30
Oil type API ...................... SJ
Engine oil capacity (Refill capacity) ...................... With filter
change: 3.8 liters (4.0 US qts, 3.3 Imp. qts)
Without filter change: 3.6 liters (3.8 US qts, 3.2 Imp. qts)
Oil change interval, km (miles) ...................... 10,000 (6,000)
Oil Pressure, kPa (bar, kg/cm 2, psi) ...................... Idle speed:
More than 60 (0.6, 0.61, 9)
2,000 rpm: More than 270 (2.7, 2.8, 39)
Ignition system
Spark plug ...................... DENSO: SK20R11 NGK: IFR6A11
Spark plug gap ...................... 1.1 mm (0.043 in)
| VEHICLE APPLICATIONS |
Model ...................... Years Produced
Toyota Avensis ...................... No data available
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