Nissan CA16DE Specifications
| Engine Model: Nissan CA16DE |
| Engine Type: 4-cycle inline 4-cylinder DOHC 16-valve liquid-cooled gasoline |
| Total Displacement: 97.4 cu.in (1.59 L) |
| Rated Engine Power: 105-115 Hp (78-86 kW) at 6000 rpm |
| Fuel System Type: Multi-point electronic fuel injection |
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The Nissan CA16DE engine is a 1.6-liter,
dual-overhead-cam, multi-point fuel injected inline-four engine
belonging to the CA-series family, which also includes the CA14, CA16,
CA18S, CA18i, CA18DE, and CA18DET. Produced during the late 1980s and
early 1990s, the CA16DE was developed as a refined, fuel-efficient, and
responsive powerplant for compact sedans and hatchbacks such as the
Nissan Sunny, Langley, and Pulsar. It represents Nissan’s transitional
engineering period between the carbureted CA-series and the more
advanced SR-series engines.
The CA16DE combines an all-iron engine block with a lightweight aluminum
DOHC cylinder head, four valves per cylinder (16 valves total), a timing
belt system, electronic fuel injection, and distributor-based ignition.
It is known for its smooth operation, reliability, long service life,
and stable performance even under continuous high-rpm driving.
While not as powerful as the larger CA18DE, the
CA16DE is more fuel-efficient and retains the robust bottom-end strength
typical of CA-series engines. The CA16DE remains highly regarded for its
simplicity, ease of maintenance, and resistance to overheating when
properly serviced.
The Nissan CA16DE is a four-stroke, inline-four gasoline engine with a
total displacement of 1597 cc (97.4 cubic inches). Bore is 78.0 mm (3.07
inches) and stroke is 83.6 mm (3.31 inches), resulting in a distinctly
long-stroke design that favors low- and mid-range torque delivery. The
compression ratio varies by market and year but typically ranges between
9.5:1 and 10.0:1.
Power output ranges from 105 to 115 horsepower (78 to 86 kW) at
approximately 6000 rpm. Maximum torque output typically ranges between
102 and 110 lb-ft (138 to 150 Nm) at around 4000–4400 rpm. Idle speed is
generally set at 750 ± 50 rpm. The firing order is 1-3-4-2.
The engine uses a cast-iron block for strength and long-term durability.
Cylinder walls are thick enough to support multiple overbores during
engine rebuilding. The crankshaft is a fully counterweighted
forged-steel unit supported by five main bearings, providing smooth
operation and excellent long-term reliability. The connecting rods are
forged steel with bushed small ends. Pistons are lightweight aluminum
with full-floating wrist pins and three-ring configurations: two
compression rings and one oil-control ring.
The cylinder head is a lightweight aluminum casting featuring dual
overhead camshafts (DOHC) and four valves per cylinder, totaling sixteen
valves. The intake valves and exhaust valves are arranged in a crossflow
configuration to optimize airflow, mixture preparation, and high-rpm
breathing efficiency.
Valve diameters typically measure:
- Intake valves: approx. 30–32 mm (1.18–1.26 in)
- Exhaust valves: approx. 25–27 mm (0.98–1.06 in)
The CA16DE uses bucket-over-shim type mechanical lifters. Valve lash
does not automatically adjust and must be corrected manually using shims
during major maintenance. Timing is driven by a reinforced rubber timing
belt, with separate sprockets for the intake and exhaust camshafts and a
belt-driven water pump.
The combustion chambers are pent-roof type, providing efficient mixture
turbulence and stable combustion even under varying load and temperature
conditions. The intake ports are high-velocity designs that support
low-rpm torque while maintaining adequate flow for higher-rpm power.
The CA16DE employs electronic multi-point fuel injection (MPI). Fuel is
delivered via an in-tank electric pump to a fuel rail regulated at
approximately 300 kPa (43 psi). Each cylinder receives fuel through a
precision injector controlled by the engine control module (ECM).
Key sensors integrated into the fuel system
include:
- Mass Air Flow (MAF) sensor
- Throttle Position Sensor (TPS)
- Engine Coolant Temperature (ECT) sensor
- Intake Air Temperature (IAT) sensor
- Oxygen sensor (closed-loop operation)
- Crankshaft Position Sensor (distributor pickup)
- Camshaft Position Reference (within distributor)
The throttle body incorporates an idle-air-control valve (IACV) that
regulates airflow during idle and cold starts. Fuel mixture control is
based on MAF signal, load, temperature, and O2 feedback, allowing
responsive and fuel-efficient operation.
The CA16DE uses a full-pressure lubrication system with a
crankshaft-driven trochoid-type oil pump.
Oil is filtered through a spin-on filter
and delivered to all critical components including:
- Main bearings
- Rod bearings
- Camshaft journals
- Hydraulic tensioner (if equipped)
- Pistons and cylinder walls
Oil capacity: approx. 3.2–3.5 liters (3.4–3.7 US quarts) with filter.
Recommended viscosity:
- SAE 5W-30 or 10W-30 for most climates
- SAE 10W-40 or 15W-40 for hotter regions
Oil pressure:
- 3000 rpm: 350–450 kPa (50–65 psi)
- Idle: >70 kPa (>10 psi)
Cooling is provided by a belt-driven centrifugal water pump that
circulates coolant through the block, head, radiator, and heater core.
An aluminum cross-flow radiator is standard.
Thermostat operation:
- Begins opening at approx. 82°C (180°F)
- Fully open at approx. 95°C (203°F)
Cooling capacity: approx. 5.5–6.0 liters (5.8–6.3 US quarts).
The cooling system includes:
- Radiator with plastic or metal tanks
- Electrically controlled cooling fan
- Coolant temperature sensor for ECM
- Overflow reservoir
The CA-series is generally resistant to overheating when coolant
maintenance is followed.
| Intake and Exhaust Systems |
The air-intake system includes:
- Air cleaner housing with high-flow paper element
- Intake ducting designed to reduce resonance
- Aluminum or composite intake manifold
- Throttle body with IACV
Exhaust system components:
- Cast-iron exhaust manifold
- Oxygen sensor (L-Jetronic EFI)
- Catalytic converter (emissions markets)
- Downstream piping with resonator and muffler
The exhaust manifold is designed to promote mid-range torque, with
paired cylinders tuned for balanced flow.
Ignition is handled by a distributor-based system using an internal
crank angle sensor. The ECM controls timing advance based on engine
speed, load, temperature, and throttle position.
Components include:
- Distributor with integrated crank angle sensor
- Ignition coil
- High-tension leads
- ECM-controlled spark advance
Spark plug specification:
- NGK standard or platinum types
- Gap: approx. 0.9–1.1 mm (0.035–0.043 in)
Replacement interval: 20,000–30,000 km for standard plugs; 60,000–80,000
km for platinum.
- Length: 540–580 mm (21.3–22.8 in)
- Width: 600–620 mm (23.6–24.4 in)
- Height: 650–670 mm (25.6–26.4 in)
Dry weight: 115–135 kg (254–298 lb) depending on accessories
Recommended service intervals:
- Engine oil and filter: every 10,000–15,000 km (6000–9000 miles)
- Air filter: every 20,000 km (12,000 miles)
- Spark plugs: every 20,000–30,000 km (standard); 60,000–80,000 km
(platinum)
- Fuel filter: every 40,000 km (25,000 miles)
- Valve lash check: every 80,000–100,000 km
- Timing belt: every 80,000–100,000 km (50,000–60,000 miles)
- Coolant: every 40,000 km or 2 years
- PCV valve: inspect every 20,000 km
- Compression (healthy engine): 160–190 psi (1100–1310 kPa), <10%
variation
- Cylinder head bolts: 88–98 Nm (65–72 lb-ft)
- Main bearing caps: 60–70 Nm (44–52 lb-ft)
- Connecting rod bolts: 40–45 Nm (30–33 lb-ft)
- Flywheel bolts: 85–95 Nm (63–70 lb-ft)
- Crankshaft pulley bolt: 140–160 Nm (103–118 lb-ft)
- Intake manifold bolts: 22–25 Nm (16–18 lb-ft)
- Exhaust manifold nuts: 25–30 Nm (18–22 lb-ft)
- Camshaft caps: 10–12 Nm (7–9 lb-ft)
- Spark plugs: 18 Nm (13 lb-ft)
- Oil drain plug: 34 Nm (25 lb-ft)
The CA16DE was primarily used in:
- Nissan Sunny B12 and B13 (select trims)
- Nissan Pulsar N13/NX Coupe (regional versions)
- Nissan Langley and Liberta Villa
- Nissan Presea (early trims)
- Export-market compact sedans and hatchbacks
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