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Toyota 1NZ-FXE Engine Specifications
Toyota 1NZ-FXE is a 1.5 L (1,497 cc, 91.35 cubic inches) hybrid straight-four 4-stroke naturally aspirated gasoline engine from Toyota NZ-family. The 1NZ-FXE engine features a lightweight aluminum block and aluminum cylinder head with two overhead camshafts (DOHC) and four valves per cylinder (16 in total). Toyota described the 1NZ-FXE engine as having an “Atkinson cycle” since the compression stroke is shortened and the expansion stroke longer. The engine has a high physical compression ratio of 13.0:1, but the closing of the inlet valve is delayed, for an effective compression ratio of 9.5:1 Cylinder bore and piston stroke are 75.0 mm (2.95 in) and 84.7 mm (3.34 in), respectively. The engine produced 76 PS (56 kW; 75 HP) at 5,000 rpm of maximum horsepower and 110 Nm (11.2 kgm; 81.2 ft-lb) at 4,000 rpm of peak torque.
Engine code identification:
1 – 1-st generation engine
NZ – Engine family
F – Economy narrow-angle DOHC
X – Hybrid Atkinson cycle
E – Multi Point Fuel Injection
| GENERAL TECHNICAL DATA |
Engine model ...................... Toyota 1NZ-FXE
Cylinder layout ...................... Four stroke, Inline-4 (Straight-4)
Fuel type ...................... Gasoline (petrol)
Year of production ...................... 1997-
Total displacement ...................... 1.5 L, 1,497 cm3 (91.35 cubic inches)
Fuel system ...................... Electronic Fuel Injection (EFI)
Power adder ...................... None
Maximum power ...................... 76 PS (56 kW; 75 HP) at 5,000 rpm
Maximum torque ...................... 110 Nm (11.2 kgm; 81.2 ft-lb) at
4,000 rpm
Firing order ...................... 1-3-4-2
Dimensions (L x W x H) ...................... No data available
Weight ...................... 87 kg (191.2 lbs)
| CYLINDER BLOCK |
The Toyota 1NZ-FXE has an aluminum cylinder block with five bearing
support system and thin-walled cast-iron liners. It has a 75.0 mm (2.95
in) cylinder bore and 84.7 mm (3.33 in) piston stroke. The engine has
two compression and single oil control ring.
Cylinder block alloy ...................... Aluminium
Compression ratio ...................... 13.0-13.5:1
Cylinder bore ...................... 75.0 mm (2.95 in)
Piston stroke ...................... 84.7 mm (3.34 in)
Number of piston rings (compression / oil) ...................... 2 / 1
Number of main bearings ...................... 5
Cylinder inner diameter (standard) ...................... 75.000-75.013
mm (2.9527-2.9528 in)
Piston skirt diameter (standard) ...................... 74.945-74.955
mm (2.9506-2.9510 in)
Piston pin outer diameter ...................... 18.001-18.004 mm
(0.7087-0.7088 in)
Piston ring side clearance ...................... Top
...................... 0.020-0.070 mm (0.0008-0.0027 in)
Second ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Oil ...................... 0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap ...................... Top ......................
0.20-0.30 mm (0.0079-0.0118 in)
Second ...................... 0.30-0.45 mm (0.0118-0.0177 in)
Oil ...................... 0.10-0.40 mm (0.0039-0.0158 in)
Crankshaft journal diameter ...................... 45.988-46.000 mm
(1.8105-1.8110 in)
Crankpin diameter ...................... 39.992-40.000 mm
(1.5745-1.5748 in)
Main bearing cap bolts tightening procedure and torque specs:
Step 1: 22 Nm; 2.2 kgm; 16.2 ft-lb
Step 2: Turn all bolts 90°
After securing bearing cap bolts, make sure crankshaft turns smoothly by
hand.
Connecting rod bearing bolts
Step 1: 15 Nm; 1.5 kgm; 11 ft-lb
Step 2: Turn bolts 90°
Crankshaft pulley bolt
128 Nm; 13.0 kgm; 94.5 ft-lb
| CYLINDER HEAD |
Valve Arrangement ...................... DOHC, chain drive
Valves ...................... 16 (4 valves per cylinder)
Valve head diameter ...................... INTAKE
...................... 30.5 mm (1.20 in)
EXHAUST ...................... 25.5 mm (1.00 in)
Valve length ...................... INTAKE ...................... 89.25
mm (3.5138 in)
EXHAUST ...................... 87.90 mm (3.4606 in)
Valve stem diameter ...................... INTAKE
...................... 4.970-4.985 mm (0.1957-0.1963 in.)
EXHAUST ...................... 4.965-4.980 mm (0.1955-0.1961 in.)
Valve spring free length ...................... 59.77 mm (2.3531 in.)
Camshaft cam height ...................... INTAKE
......................
EXHAUST ...................... 44.046-44.146 mm (1.7341-1.7380 in.)
Outer camshaft journal diameter ...................... №1
...................... 34.449-34.465 mm (1.3563-1.3569 in.)
Other journals diameter ...................... 22.949-22.965 mm
(0.9035-0.9041 in.)
Head tightening procedure and torque specs:
Step 1: 29 Nm; 3.0 kgm; 22 ft-lb
Step 2: Turn all bolts 90°
Step 3: Turn all bolts another 90°
Camshaft timing sprocket
| MAINTENANCE DATA |
Valve clearance
Intake valve ...................... 0.17-0.23 mm (0.007-0.009 in)
Exhaust valve ...................... 0.27-0.33 mm (0.011-0.013 in)
Compression pressure
Standard ...................... 9.0 kg/m2 (128 psi)
Minimun ...................... 7.0 kg/m2 (99 psi)
Compression differential limit between cylinders ......................
1.0 kg/m2 (14 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, 10W-30
Oil type API ...................... SJ or higher
Engine oil capacity (Refill capacity) ...................... With filter
change 3.4 l
Without filter change 3,7 l
Oil change interval, km (miles) ...................... 5,000-10,000
(3,000-6,000)
Ignition system
Spark plug ...................... DENSO: SK16R11, NGK: IFR5A11
Spark plug gap ...................... 1.0-1.1 mm (0.039-0.043 in)
| VEHICLE APPLICATIONS |
Model ...................... Years Produced
Toyota Prius ...................... No data available
Toyota Prius C ...................... No data available
Toyota Yaris ...................... No data available
Toyota Corolla (Axio/Fielder) ...................... No data available
Toyota Sienta ...................... No data available
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| Engines Technical Specifications |