Nissan CA18i

Nissan CA18iThe Nissan CA18i is a 1.8 L (1,809 cc, 110.4 cu·in) natural aspirated four-stroke water-cooled internal combustion gasoline engine, manufactured by Nissan Motor Corporation from 1985 to 1993.

The cylinder bore and piston stroke are 83.0 mm (3.268 in) and 83.6 mm (3.291 in), respectively. The compression ratio rating is 8.8:1.

The CA18i engine produced from 88 PS (65 KW; 87 HP) at 5,200 rpm to 105 PS (77 KW; 103 HP) at 5,600 rpm of maximum horsepower and 142 Nm (14.5 kg·m; 104.8 ft·lb) at 3,200 rpm or 160 Nm (16.32 kg·m; 118.08 ft·lb) at 2,800 rpm of peak torque.

The Nissan CA18i features:

  • Cast-iron cylinder block
  • Aluminum cylinder head
  • SOHC design with four valves per cylinder
  • Throttle-body fuel injection SPi (ECCS)
  • Pressurized lubrication system

General information

Engine Specifications
Engine modelCA18i
Engine type4-stroke, DOHC, vertical
Displacement1.8 L, 1,809 cm3, (110.4 cu·in)
Max. horsepower 88 PS (65 KW; 87 HP) at 5,200 rpm
91 PS (67 KW; 90 HP) at 5,200 rpm
105 PS (77 KW; 103 HP) at 5,600 rpm
Max. torque 142 Nm (14.5 kg·m; 104.8 ft·lb) at 3,200 rpm
160 Nm (16.32 kg·m; 118.08 ft·lb) at 2,800 rpm
Cooling systemLiquid
Lubricating systemPressurized lubrication
Fuel systemThrottle-body fuel injection
Starting systemStarter motor
Charging systemAlternator
Firing order:1-3-4-2

Cylinder Block and Head

Cylinder block
Cylinder block alloy:Cast-iron
Compression ratio:8.8:1
Cylinder bore:83.0 mm (3.27 in)
Piston stroke:83.6 mm (3.29 in)
Cylinder internal diameter (standard):83.000-83.050 mm (3.2677-3.2697 in)
Piston skirt outer diameter (standard):82.975-83.025 mm (3.2667-3.2687 in)
Number of piston rings (compression / oil):2/1
Piston pin diameter:19.995-20.000 mm (0.7872-0.7874 in)
Side clearance (Top):0.040-0.073 mm (0.0016-0.0029 in)
Side clearance (Second):0.030-0.063 mm (0.0012-0.0025 in)
Side clearance (Oil):0.025-0.085 mm (0.0010-0.0033 in)
Ring end gap (Top):0.220-0.390 mm (0.0087-0.0154 in)
Ring end gap (Second):0.190-0.450 mm (0.0075-0.0177 in)
Ring end gap (Oil):0.200-0.760 mm (0.0079-0.0299 in)
Number of main bearings:5
Crankshaft main journal diameter:52.951-52.964 mm (2.0847-2.0852 in)
Crankpin journal diameter:44.961-44.974 mm (1.7701-1.7706 in)
Cylinder head
Cylinder head alloy:Aluminium
Valve arrangement:SOHC
Valves:2,(8 valves in total)

Service Data

Compression pressure
Standard:1.236 kPA (12.6 kg/cm2; 179 psi)
Minimum:1,040 kPA (10.6 kg/cm2; 151 psi)
Compression differential
limit between cylinders:
98 kPA (1.0 kg/cm2; 14 psi)
Valve clearance
Intake valve clearance:0.30 mm (0.0120 in)
Exhaust valve clearance:0.30 mm (0.0120 in)
Oil system
Lubrication system:Pressurized lubrication
Oil type:API SG
Recommended oil:SAE 5W-30,10W-30, 10W-40
Oil capacity: With oil filter: 3.6 liters (3.8 US.qts, 3.17 Imp. qts)
Without oil filter: 3.2 liters (3.38 US.qts, 2.82 Imp. qts)
Oil pressure: 98 kPA (1.0 kg/cm2; 14.0 psi) at Idle speed
390 kPA (4.0 kg/cm2; 57.0 psi) at 4,000 rpm
Fuel system
Type:Throttle-body fuel injection – SPi (ECCS)
Ignition system
Ignition timing:13° B.T.D.C. / 700 rpm
Spark plug:NGK: BCPR5ES-11
Spark plug gap:1.0-1.1 mm (0.0394-0.0433 in)
Spark plug torque:25 N·m (2.5 kg·m, 18.4 ft·lb)


ModelYears Produced
Nissan Stanza (T12)1986-1990
Nissan Auster (T12)1985-1990
Nissan Bluebird (RNU12)1987-1989
Nissan Laurel (C33)1989-1992
Nissan Skyline (R32)1989-1993
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.

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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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