Nissan CA18DET

Nissan CA18DET turbo engineThe Nissan CA18DET is a turbocharged 1.8 liter (1,809 cc, 110.39 cu in) straight-4, four-stroke cycle gasoline engine from Nissan CA-family. The CA18DET motor was produced from 1985 through 1994.

The Nissan CA1D8ET engine has DOHC (dual overhead camshaft) design with four valves per cylinder, cast-iron block, and an aluminum cylinder head. The engine is equipped with Multiport Fuel Injection system and single Garrett T25 turbocharger. The engine was available in two versions: with intercooler and without it. This engine is similar to the natural aspirated variant – CA18DE. The CA18DET motor has an 83.0 mm (3.268 in) cylinder bore and 83.6 mm (3.291 in) piston stroke with a compression ratio of 8.5:1.

The CA18DET produced:

  • Version without intercooler: 145.5 PS (107 KW; 143.5 HP) at 6,400 rpm of horsepower and 201 Nm (20.5 kg·m; 148.3 ft·lb) at 4,000 rpm of torque or 160.5 PS (118 KW; 158 HP) at 6,400 rpm of power and 211 Nm (21.5 kg·m; 155.7 ft·lb) at 4,000 rpm of torque.
  • Version with intercooler: 175.4 PS (129 KW; 173 HP) at 6,400 rpm of horsepower and 226 Nm (23.0 kg·m; 166.8 ft·lb) at 4,000 rpm of torque.
  • CA18DET-R: 185 PS (136 KW; 182 HP) at 6,400 rpm of horsepower and 240 Nm (24.5 kg·m; 177.1 ft·lb) at 4,000 rpm of torque.

The breakdown of the engine code is as follows:

  • CA – Engine Family
  • 18 – 1.8 Liter Displacement
  • D – DOHC (Dual Overhead Camshafts)
  • E – Multi Point Fuel Injection
  • T – Turbocharged

General information

Engine Specifications
Engine codeCA18DET
LayoutFour stroke, Inline-4 (Straight-4)
Fuel typeGasoline
Displacement1.8 L, 1,809 cm3 (110.39 cu in)
Fuel systemMultiport Fuel Injection
Power adderTurbocharger Garrett T25
Max. horsepower Without intercooler:
145 PS (107 KW; 143 HP) at 6,400 rpm
160 PS (118 KW; 158 HP) at 6,400 rpm
With intercooler:
175 PS (129 KW; 173 HP) at 6,400 rpm
185 PS (136 KW; 182 HP) at 6,400 rpm
Max. torque Without intercooler:
201 Nm (20.5 kg·m; 148.3 ft·lb) at 4,000 rpm
211 Nm (21.5 kg·m; 155.7 ft·lb) at 4,000 rpm
With intercooler:
226 Nm (23.0 kg·m; 166.8 ft·lb) at 4,000 rpm
240 Nm (24.5 kg·m; 177.1 ft·lb) at 4,000 rpm
Firing order1-3-4-2
Dimensions (L x H x W):

Cylinder block

The Nissan CA18DET motor has a cast-iron cylinder block. The cylinder block, a monoblock special casting structure, employs a five-bearing-support system. The CA18DET 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 8.5:1.

Cylinder block
Cylinder block alloyCast iron
Compression ratio:8.5:1
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):82.965-83.015 mm (3.2663-3.2638 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)
Piston ring end gap:Top0.25-0.42 mm (0.0098-0.0165 in)
Second0.38-0.64 mm (0.0150-0.0252 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

The cylinder head is made of an aluminum alloy with good cooling efficiency. The camshaft is driven by a timing belt driven by the crankshaft. Intake valves are 34.0-34.2 mm (1.339-1.346 in) in diameter and the exhaust valves are 28.0-28.2 mm (1.102-1.110 in). The intake valve duration is 240°, valve lift is 7.8 mm (0.307 in); the exhaust valve duration is 248°, valve lift is 8.5 mm (0.335 in). The engine used hydraulic valve lifters.

Cylinder head
Valve Arrangement:DOHC, belt driven
Valves:16 (4 valves per cylinder)
Intake/Exhaust duration:240°/248°
Valve head diameter:INTAKE34.0-34.2 mm (1.339-1.346 in)
EXHAUST28.0-28.2 mm (1.102-1.110 in)
Valve length:INTAKE88.8-89.0 mm (3.496-3.504 in)
EXHAUST89.2-89.4 mm (3.512-3.520 in)
Valve stem diameter:INTAKE5.965-5.980 mm (0.2348-0.2354 in)
EXHAUST5.945-5.960 mm (0.2341-0.2346 in)
Valve spring free length:INTAKE43.10 mm (1.697 in)
EXHAUST43.10 mm (1.697 in)
Valve lift:INTAKE7.8 mm (0.307 in)
EXHAUST8.5 mm (0.335 in)
Camshaft cam height:INTAKE39.785-39.815 mm (1.5663-1.5675 in)
EXHAUST40.485-40.515 mm (1.5939-1.5951 in)
Outer camshaft journal diameter:27.935-27.955 mm (1.0998-1.1006 in)

Maintenance data

Compression pressure
Standard12.0 kg/cm2 (11.77 bar, 171 psi) / 350 rpm
Minimun10.0 kg/cm2 (9.81 bar, 142 psi) / 250 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 10W-30
Oil type APISF/CC or SF/CD
Engine oil capacity (Refill capacity) With oil filter: 3.5 l (3-1/8 qt)
Without oil filter: 3.1 l (2-3/4 qt)
Oil change interval, km (miles)6,000 (3,500)
Ignition system
Spark plug With catalyzer: Platinum-tipped type BCPR6-11 (NGK)
Without catalyzer: BCPR6ES-11 (NGK)
Spark plug gap1.0-1.1 mm (0.039-0.043 in)
Spark plug tightening torque20-29 Nm; 2.0-3.0 kg·m; 14-22 ft·lb

Vehicle applications

ModelYears Produced
Nissan Auster (T12)1985-1990
Nissan Stanza (T12)1986-1990
Nissan Bluebird (U11)1985-1987
Nissan Bluebird (U12)1987-1989
Nissan Silvia (S12)1986-1988
Nissan Silvia (S13)1988-1991
Nissan 180SX (S13)1989-1991
Nissan Bluebird (RNU12) SSS ATTESA Limited1987-1989
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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