Nissan E16S Specifications
| Engine Model: Nissan E16S |
| Engine Type: 4-cycle inline 4-cylinder OHV 8-valve liquid-cooled gasoline |
| Total Displacement: 97.5 cu.in (1.59 L) |
| Rated Engine Power: 69-75 Hp (51-55 kW) at 5000 rpm |
| Fuel System Type: Single-barrel or twin-barrel downdraft carburetor |
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The Nissan E16S engine is a 1.6-liter,
inline-four, four-stroke, water-cooled gasoline engine belonging to the
E-series family. Developed during the early 1980s, the E16S powered
compact models such as the Nissan Sunny, Sentra, Pulsar, and Cherry. The
E16S emphasizes durability, mechanical simplicity, and low operating
cost.
With a cast-iron block, aluminum OHV cylinder
head, pushrod valvetrain, and simple carburetor-based fuel system, the
E16S was engineered for reliability rather than performance. Stable
torque at low and mid rpm, long service life, and ease of maintenance
made it a popular engine for commuter cars, taxis, and cost-focused
export markets.
The Nissan E16S engine has a displacement of 1,597 cc (97.5 cu in). Bore
is 76.0 mm (2.99 in) and stroke is 88.0 mm (3.46 in), forming a
long-stroke configuration intended to improve low-speed torque and fuel
efficiency. The compression ratio is approx. 9.0:1. Maximum output is
approx. 69–75 hp at around 5,000 rpm. Maximum torque is approx. 83–88
lb-ft (112–119 Nm) at around 2,800–3,200 rpm.
Idle speed is typically 700 ± 50 rpm. Firing
order is 1–3–4–2. The valvetrain uses a block-mounted camshaft with
pushrods and rocker arms. The design emphasizes reliability, low
emissions for the era, and stable heat management.
The engine block is cast iron with five main bearings supporting a
forged-steel crankshaft. Pistons are cast-aluminum with two compression
rings and one oil ring. Connecting rods are forged steel. Bearings are
pressure-lubricated. The crankshaft uses fully machined journals to
support long-term durability.
The aluminum cylinder head is an overhead-valve (OHV) design with two
valves per cylinder. The pushrod valvetrain is operated by a camshaft
located in the block. Rocker arms actuate the valves via adjustable lash
screws.
Combustion chambers are wedge-shaped to promote
stable flame propagation. Valve seats are hardened for long life. Port
geometry is designed to promote moderate swirl, improving mixture
quality at low rpm. The valvetrain requires periodic valve-lash
adjustment to maintain proper operation.
The E16S uses a carbureted fuel system.
Depending on market, the engine may use:
– Single-barrel carburetor
– Two-stage (progressive) carburetor
– Electronic-feedback carburetor with O2 sensor
Fuel is delivered by a mechanical diaphragm pump driven by the camshaft.
Fuel pressure is approx. 3–5 psi.
The carburetor includes:
– Idle and main circuits
– Accelerator pump
– Choke system (automatic or manual)
– Secondary circuit (two-stage units)
Feedback-carburetor versions include:
– Oxygen sensor
– Mixture-control solenoid
– Coolant and throttle-position switches
The system is simple, economical, and easy to tune. Ideally tuned
mixture ensures stable idle, moderate fuel consumption, and correct
emissions.
Lubrication is a full-pressure wet-sump type using a crankshaft-driven
trochoid oil pump. Oil flows through a replaceable spin-on filter and is
delivered to main bearings, rod bearings, camshaft bearings, and
valvetrain components. Pushrods deliver oil upward to the rocker system.
– Oil capacity: approx. 3.5 liters (3.7 US qt)
– Oil pressure: approx. 45–55 psi at 3,000 rpm; approx. 10–15 psi at
idle
– Recommended oil: SAE 10W-30 or 10W-40
Regular oil and filter changes extend engine life significantly.
The E16S uses a liquid-cooled system with a belt-driven centrifugal
water pump. Coolant circulates through block passages, the head,
radiator, and heater core. The thermostat begins opening at approx. 82°C
(180°F) and is fully open around 95°C (203°F).
– Cooling capacity: approx. 5.5–6.0 liters (5.8–6.3 US qt)
– Radiator cap pressure: approx. 13 psi
Cooling fans may be engine-driven or electric depending on vehicle
model. Proper coolant replacement prevents scale formation and
overheating.
| Intake and Exhaust Systems |
The induction system includes:
– Air-cleaner housing
– Replaceable paper filter
– Intake snorkel
– Hot-air valve for cold-weather operation
The intake manifold is cast iron or aluminum depending on year. The
exhaust manifold is cast iron with a simple runner layout feeding a
single downpipe.
Emissions-equipped models may include:
– Oxygen sensor
– EGR valve
– Catalytic converter
The overall system favors simplicity and reliability.
Ignition is provided by a distributor-based system.
Components include:
– Distributor with centrifugal advance
– Vacuum advance mechanism
– Electronic module in later versions
– Single ignition coil
– High-tension leads
Spark-plug gap is 0.8–1.0 mm (0.031–0.039 in). Ignition timing is
usually set around 8–12 degrees BTDC at idle with vacuum disconnected.
The charging system uses a 12-volt alternator producing 50–60 amps. The
starter motor is a reduction-gear type for reliable cold cranking.
– Length: approx. 580–620 mm (22.8–24.4 in)
– Width: approx. 560 mm (22.0 in)
– Height: approx. 650 mm (25.6 in)
Dry weight: 125–135 kg (275–298 lb) depending on accessory configuration
Routine maintenance ensures reliable
operation:
– Oil and filter: every 5,000 km (3,000 mi)
– Air filter: every 20,000 km (12,000 mi)
– Fuel filter: every 20,000–30,000 km
– Spark plugs: every 20,000–30,000 km
– Valve-lash adjustment: every major service
– Ignition timing: check and adjust as needed
– Carburetor tuning: at tune-up intervals
– Coolant replacement: every 2 years
Compression pressure for a healthy engine is approx. 150–170 psi with
less than 10% variation between cylinders. Idle should hold around 700
rpm.
– Cylinder-head bolts: 65–75 lb-ft (88–102 Nm)
– Main-bearing-cap bolts: 55–65 lb-ft (75–88 Nm)
– Connecting-rod bolts: 30–35 lb-ft (40–48 Nm)
– Flywheel bolts: 70–80 lb-ft (95–108 Nm)
– Intake-manifold bolts: 16–18 lb-ft (22–25 Nm)
– Exhaust-manifold nuts: 20–25 lb-ft (27–34 Nm)
– Spark plugs: 13 lb-ft (18 Nm)
– Oil-drain plug: 25–30 lb-ft (34–40 Nm)
The Nissan E16S engine was used in:
– Nissan Sunny B11
– Nissan Sunny/Sentra B12
– Nissan Pulsar/Cherry N12
– Regional compact sedans and hatchbacks
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