Nissan CA18i

Nissan CA18iThe Nissan CA18i is a 1.8 liter (1,809 cc, 110.39 cu in) straight-4, four-stroke cycle gasoline engine from Nissan CA-family. The CA18i motor was produced from 1988 through 1993.

The Nissan CA18i engine has SOHC (single overhead camshaft) design with two valves per cylinder (8 valves in total), cast-iron block and an aluminum cylinder head; fully balanced five-bearing crankshaft. The engine is equipped with Single-point electronical fuel injection system.

The CA18i motor has an 83.0 mm (3.268 in) cylinder bore and 83.6 mm (3.291 in) piston stroke with a compression ratio rating of 8.8:1. It produced from 88 PS (65 KW; 87 HP) at 5,200 rpm to 105 PS (77 KW; 103 HP) at 5,600 rpm of 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 torque.

The breakdown of the engine code is as follows:

  • CA – Engine Family
  • 18 – 1.8 Liter Displacement
  • – SOHC (Single Overhead Camshaft)
  • i – Single-point Electronical Injection

General information

Engine Specifications
Engine codeCA18i
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline
Displacement1.8 L, 1,809 cm3 (110.39 cu in)
Fuel systemSingle-point Electronical Injection
Power adderNone
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
Firing order1-3-4-2
Dimensions (L x H x W):

Cylinder block

The Nissan CA18i motor has a cast-iron cylinder block. The cylinder block, a monoblock special casting structure, employs a five-bearing-support system. The CA18i engine cylinder bore is 83.0 mm (3.268 in) and the piston stroke is 83.6 mm (3.291 in), compression ratio rating is 8.8:1.

Each piston is fitted with two compression rings and a single oil ring. The cylinder block height is 204.8 mm (8.06 in).

Cylinder block
Cylinder block alloyCast iron
Compression ratio:8.8:1
Cylinder bore:83.0 mm (3.268 in)
Piston stroke:83.6 mm (3.291 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:5
Cylinder inner diameter (standard):83.000-83.050 mm (3.2677-3.2697 in)
Piston skirt diameter (standard):82.975-83.025 mm (3.2667-3.2687 in)
Piston pin outer diameter:19.995-20.000 mm (0.7872-0.7874 in)
Piston ring side clearance:Top0.040-0.073 mm (0.0016-0.0029 in)
Second0.030-0.063 mm (0.0012-0.0025 in)
Oil0.025-0.085 mm (0.0010-0.0033 in)
Piston ring end gap:Top0.22-0.39 mm (0.0087-0.0154 in)
Second0.19-0.45 mm (0.0075-0.0177 in)
Oil0.20-0.76 mm (0.0079-0.0299 in)
Connecting rod center distance:132.95-133.05 mm (5.2342-5.2382 in)
Crankshaft journal diameter:52.951-52.964 mm (2.0847-2.0852 in)
Crankpin diameter:44.961-44.974 mm (1.7701-1.7706 in)
Crankshaft center distance:41.77-41.83 mm (1.6445-1.6468 in)

Cylinder head

Cylinder head
Valve Arrangement:SOHC
Valves:8 (2 valves per cylinder)
Intake/Exhaust duration:

Maintenance data

Valve clearance
Intake valve clearance:0.30 mm (0.0120 in)
Exhaust valve clearance:0.30 mm (0.0120 in)
Compression pressure
Standard12.2 kg/cm2 (173 psi) / 350 rpm
Minimun10.2 kg/cm2 (145 psi) / 350 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil10W-30
Oil type APISE, SF, SG, SD
Engine oil capacity (Refill 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)
Ignition system
Spark plugNGK BCPR5ES-11
Spark plug gap1.1 mm (0.04 in)

Vehicle applications

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.

ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

Be the first to comment

Leave a Reply

Your email address will not be published.