CA18DET Engine
CA18DE is a 1.8L (1,809 cubic centimeters, 110.39 cubic inches) inline-4, 4-cycle gasoline motor of Nissan CA series, manufactured in 1987-1989.
CA18DE features DOHC system with 4 valves for each cylinder, block of cast iron, aluminum cylinder head plus well-balanced 5-bearing crankshaft. Motor keeps Multiport Fuel Injection system.
It owns cylinder block of cast iron 204.8 millimeters (8.06 inches) wide, a monoblock with specific casting texture, with a 5-bearing support system. Having cylinder bore of 83 millimeters (3.268 inches) and piston stroke of 83.6 millimeters (3.291 inches), it reaches compression index equal to 10.0:1. Every piston keeps two compression rings and one oil ring. Capacity is 132 hp (99KW or 134 PS) at 6,400 rpm and a torque of 159 Nm (16.2 kg/m; 117.3 ft/lb) at 5,200 rpm.
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
CA18DET Specs
| 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 | ||
| 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 | ||
| 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) | |
Applications
- 1987-1988 Silvia S12 RS-X
- 1989-1990 Nissan Silvia/180SX S13 (International market)
- 1987-1989 Nissan Bluebird RNU12 SSS ATTESA Limited (Japanese Market)
- 1989-1994 Nissan 200SX RS13-U Europe.
- 1985-1990 Nissan Auster “1.8Xtt” and “Euroform Twincam Turbo”
CA18DET Engine problems and relability
CA18DET, a turbo version of the mentioned above motor, is a 1.8L (1,809 cubic centimeters, 110.39 cubic inches) inline-four, 4-cycle gasoline engine, released by Nissan in 1985-1994.
This engine features DOCH system with 4 valves for cylinder, block of cast iron and aluminum cylinder head. Having Multiport Fuel Injection system, CA18DET utilizes Garrett T25 turbocharger. Moreover, it has 2 modifications: featuring intercooler or not. Like its non-turbo variation, this motor features cylinder bore of 83 millimeters (3.268 inches) plus piston stroke of 83.6 millimeters (3.291 inches). Compression rate equals to 8.5:1.
Aluminum alloy cylinder head keeps great cooling performance. Crankshaft controls timing belt, which drives camshaft. Size of intake valves is 34.0-34.2 millimeters (1.339-1.346 inches) while exhaust ones are 28.0-28.2 millimeters (1.102-1.110 inches). Intake valve has duration 240 degrees and lift 7.8 millimeters (0.307 inches). Exhaust valve has duration 248 degrees and lift 8.5 millimeters (0.335 inches). Besides, motor features hydraulic valve lifters.
| 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 |
Written by Dan Hoffman
