The 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 code | CA18DET |
Layout | Four stroke, Inline-4 (Straight-4) |
Fuel type | Gasoline |
Production | 1985-1994 |
Displacement | 1.8 L, 1,809 cm3 (110.39 cu in) |
Fuel system | Multiport Fuel Injection |
Power adder | Turbocharger 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 CA18DET-R: 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 CA18DET-R: 240 Nm (24.5 kg·m; 177.1 ft·lb) at 4,000 rpm |
Firing order | 1-3-4-2 |
Dimensions (L x H x W): | – |
Weight | – |
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 alloy | Cast 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: | Top | 0.040-0.073 mm (0.0016-0.0029 in) |
Second | 0.030-0.063 mm (0.0012-0.0025 in) | |
Piston ring end gap: | Top | 0.25-0.42 mm (0.0098-0.0165 in) |
Second | 0.38-0.64 mm (0.0150-0.0252 in) | |
Oil | 0.20-0.76 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: | INTAKE | 34.0-34.2 mm (1.339-1.346 in) |
EXHAUST | 28.0-28.2 mm (1.102-1.110 in) | |
Valve length: | INTAKE | 88.8-89.0 mm (3.496-3.504 in) |
EXHAUST | 89.2-89.4 mm (3.512-3.520 in) | |
Valve stem diameter: | INTAKE | 5.965-5.980 mm (0.2348-0.2354 in) |
EXHAUST | 5.945-5.960 mm (0.2341-0.2346 in) | |
Valve spring free length: | INTAKE | 43.10 mm (1.697 in) |
EXHAUST | 43.10 mm (1.697 in) | |
Valve lift: | INTAKE | 7.8 mm (0.307 in) |
EXHAUST | 8.5 mm (0.335 in) | |
Camshaft cam height: | INTAKE | 39.785-39.815 mm (1.5663-1.5675 in) |
EXHAUST | 40.485-40.515 mm (1.5939-1.5951 in) | |
Outer camshaft journal diameter: | 27.935-27.955 mm (1.0998-1.1006 in) |
Maintenance data
Compression pressure | |
Standard | 12.0 kg/cm2 (11.77 bar, 171 psi) / 350 rpm |
Minimun | 10.0 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 20W-40 20W-50 |
Oil type API | SF/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 gap | 1.0-1.1 mm (0.039-0.043 in) |
Spark plug tightening torque | 20-29 Nm; 2.0-3.0 kg·m; 14-22 ft·lb |
Vehicle applications
Model | Years 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 Limited | 1987-1989 |
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.
Nissan Euro CA18DET service manual:
Crankshaft journal diameter:52.951-52.975mm
Crankpin diameter:44.954-44.974