Toyota 1NZ-FE

Toyota 1NZ-FEThe Toyota 1NZ-FE is a 1.5 L (1,497 cc, 91.35 cu·in) straight-four, natural aspirated four-stroke liquid-cooled internal combustion vertical gasoline engine from the Toyota NZ-series.

Cylinder bore and piston stroke are 75.0 mm (2.95 in) and 84.7 mm (3.34 in), respectively. Compression ratio rating is 10.5:1.

This engine produced 110.0 PS (81.0 kW; 109.0 HP) at 6,000 rpm of horsepower and 143.0 Nm (14.6 kg·m; 105.6 ft·lb) at 4,000 rpm of torque.

The Toyota 1NZ-FE features:

  • Lightweight aluminum cylinder block
  • Aluminum cylinder head
  • DOHC design (16 valves)
  • Hydraulic valve lifters (since 2004)
  • Electronic fuel injection system
  • VVT-i (Variable Valve Timing with intelligence) system on the intake side
  • ETCS-i (Electronic Throttle Control System-intelligent)
  • DIS-4 ignition system with individual ignition coil for each spark plug
  • Liquid cooling system
  • Electric starter

General information

Engine Specifications
Engine model1NZ-FE
Engine type4-stroke, OHV, straight-four
Displacement1.5 L, 1,497 cm3, (91.35 cu·in)
Max. horsepower110.0 PS (81.0 kW; 109.0 HP) at 6,000 rpm
Max. torque143.0 Nm (14.6 kg·m; 105.6 ft·lb) at 4,000 rpm
Power adderNone
Cooling systemLiquid-cooled
Lubricating systemForced lubrication
Ignition systemDIS-4
Fuel systemElectronic fuel injection system
Fuel usedGasoline
Starting systemElectric starter
Firing order:1-3-4-2
Dimensions (L x W X H)
Dry weight87 kg (191.2 lbs)

Cylinder Block and Head

Cylinder block
Cylinder block alloy:Aluminium
Compression ratio:10.5:1
Cylinder bore:75.0 mm (2.95 in)
Piston stroke:84.7 mm (3.34 in)
Cylinder internal diameter (standard):75.000-75.013 mm (2.9527-2.9528 in)
Piston skirt outer diameter (standard):74.945-74.955 mm (2.9506-2.9510 in)
Piston pin outer diameter (standard):18.001-18.004 mm (0.7087-0.7088 in)
Number of piston rings (compression / oil):2/1
Ring side clearance (Top):0.030-0.070 mm (0.0012-0.0027 in)
Ring side clearance (Second):0.020-0.060 mm (0.008-0.0024 in)
Ring side clearance (Oil):0.070-0.150 mm (0.0027-0.0059 in)
Ring end gap (Top):0.250-0.350 mm (0.0098-0.0138 in)
Ring end gap (Second):0.350-0.500 mm (0.0138-0.0197 in)
Ring end gap (Oil):0.100-0.350 mm (0.0039-0.0138 in)
Number of main bearings:5
Crankshaft main journal diameter:45.988-46.000 mm (1.8105-1.8110 in)
Crankpin journal diameter:39.992-40.000 mm (1.5745-1.5748 in)
Cylinder head
Cylinder head alloy:Aluminium
Valve arrangement:DOHC, chain drive
Valves:4,(16 valves in total)
Valve head diameter (INTAKE):30.5 mm (1.20 in)
Valve head diameter (EXHAUST):25.5 mm (1.00 in)
Valve length (INTAKE):89.25 mm (3.5138 in)
Valve length (EXHAUST):87.90 mm (3.4606 in)
Valve steam diameter (INTAKE):4.970-4.985 mm (0.1957-0.1963 in)
Valve steam diameter (EXHAUST):4.965-4.980 mm (0.1955-0.1961 in)
Valve spring free length (INTAKE):45.05-45.15 mm (1.774-1.778 in.)
Valve spring free length (EXHAUST):45.05-45.15 mm (1.774-1.778 in.)
Camshaft lobe height (INTAKE):44.617-44.717 mm (1.7566-1.7605 in)
Camshaft lobe height (EXHAUST):44.666-44.766 mm (1.7585-1.7624 in)
Camshaft journal diameter: 1st: 34.449-34.465 mm (1.3563-1.3569 in)
Other: 22.949-22.965 mm (0.9035-0.9041 in.)

Service Data

Valve clearance
Intake valve clearance:0.15-0.25 mm (0.006-0.010 in)
Exhaust valve clearance:0.25-0.35 mm (0.010-0.014 in)
Cylinder compression pressure
Standard:15.0 kg/m2 (213 psi) / 200 rpm
Minimum:11.0 kg/m2 (156 psi) / 200 rpm
Compression differential limit between cylinders:1.0 kg/m2 (14 psi) / 200 rpm
Oil system
Lubrication system:Forced lubrication
Recommended engine oil SAE:5W-30, 10W-30
Oil type API:SJ or higher
Oil capacity: With filter change 3.4 liters (3.6 US.qts, 3.0 Imp. qts)
Without filter change 3.7 liters (3.9 US.qts, 3.26 Imp. qts)
Oil change interval, km (miles):5,000-10,000 (3,000-6,000)
Ignition system
Type:DIS-4 ignition system with individual ignition coils
Spark plug:DENSO: K16R-11, NGK: KBR5EYA-11
Spark plug gap:1.1 mm (0.043 in)

Valve clearance adjustment data

Until 2004, the engine was not equipped with hydraulic valve lifters, so special replaceable tappets were used to adjust valve clearance.

Calculate the thickness of new adjusting valve lifter so valve clearance comes within specified values.

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

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

Valve lifters are available in 35 sizes to range from 5.06 mm (0.1992 in) to 5.74 mm (0.2259 in), in steps of 0.02 mm (0.0008 in).

Example (intake valve):
R = 5.10 mm
M = 0.52 mm
N = 5.10 + (0.52 – 0.20) = 5.42 mm.

Tightening torque specs

Tightening torque specs
Cylinder head Step 1: 29 Nm; 3.0 kg·m; 22 ft·lb
Step 2: Turn all bolts 90°
Step 3: Turn all bolts another 90°
Camshaft timing sprocket64 Nm; 6.5 kg·m; 47 ft-lb
Main bearing cap bolts Step 1: 22 Nm; 2.2 kg·m; 16.2 ft·lb
Step 2: Turn all bolts 90°
Connecting rod bearing bolts Step 1: 15 Nm; 1.5 kg·m; 11 ft·lb
Step 2: Turn bolts 90°
Crankshaft pulley bolt128 Nm; 13.0 kg·m; 94.5 ft·lb
Drive plate (A/T) fixing bolts88 Nm; 8.8 kg·m; 65 ft·lb

Vehicle applications

ModelYears Produced
Toyota Allion (T240)2001-2007
Toyota Allion (T260)2007-
Toyota Auris (E150)2006-2012
Toyota Auris (E180)2012-2018
Toyota Corolla (E120)2000-2007
Toyota Corolla (E150)2006-2012
Toyota Corolla (E180)2012-2019
Toyota Porte (NP10)2004-2012
Toyota Porte (NP140)2012-
Toyota Probox (XP50)2002-2018
Toyota Raum (XZ20)2003-2011
Toyota Ractis (XP100)2005-2010
Toyota Ractis (XP120)2010-2017
Toyota Sienta (XP80)2003-2015
Toyota Sienta (XP170)2015-
Toyota Vios (XP40)2002-2007
Toyota Vios (XP90)2007-2013
Toyota Vios (XP150)2013-
Toyota Yaris (XP10)1999-2005
Toyota Yaris (XP90)2005-2011
Toyota Yaris (XP130)2011-2019
Scion xA (XP60)2004-2006
Scion xB (XP30)2003-2006
Scion xB (E150)2007-2015
Geely CK2005-2016
Geely MK 1 (LG-1)2006-2017
Great Wall Voleex C102010-2013
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

ATTENTION! Dear visitors, this is an informational database of technical specifications, we are not a parts supplier or a marketplace.

We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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