The Nissan QD32 is a durable and versatile 3.2-liter, 4-cylinder diesel engine produced from the 1990s through the early 2000s, known for its robustness, fuel efficiency, and reliability in various commercial, utility, and off-road vehicles like the Nissan Patrol and Navara.It features a cast iron block and cylinder head for heat dissipation and durability and comes in naturally aspirated and turbocharged variants, including the intercooled QD32ETi for higher performance.
Key Characteristics
Displacement:3.2 liters (3,228 cc)
Configuration:4-cylinder, inline engine
Fuel Type:Diesel
Construction:Cast iron block and cylinder head for durability
Fuel System:Mechanical direct injection
Performance:Offers a balance of low-end torque and mid-range power
Variants
QD32 (Base Model):
A naturally aspirated, non-turbocharged version designed for simplicity, durability, and fuel efficiency.
QD32T:
A turbocharged variant that provides increased power and torque without the added complexity of an intercooler.
QD32ETi:
A turbocharged and intercooled version that uses a cooler to improve air density, significantly enhancing power, torque, and overall efficiency.
Applications
The QD32 engine was primarily used in: Light-duty trucks and pickups, Utility and SUVs, Off-road vehicles, and Light commercial vehicles.
The Nissan QD32 is a 3.2-liter inline four-cylinder, water-cooled, direct-injection diesel engine, though specific variants and turbocharging (QD32T/QD32Ti) affect exact power and torque outputs, typically ranging from 85-100 hp and 177-200 Nm of torque. Key specifications include a 3153-3195 cc displacement, an approximate 22.5:1 compression ratio, and a durable construction with cast-iron blocks and aluminum cylinder heads. This engine is known for reliable power in Nissan vehicles like the Navara and Frontier, and in industrial applications.
Fuel System:Distributor-type fuel injection pump (or common rail in some variants)
Valvetrain:Overhead valve (OHV) with 2 valves per cylinder in earlier models, or 16-valve (4 per cylinder) and SOHC or DOHC in later turbocharged models.
Performance (Varies by model and turbocharging)
Maximum Power:85–100 horsepower (63–75 kW)
Maximum Torque:177–200 Nm (130–147 lb-ft)
RPM for Power/Torque:Typically around 4,000 rpm for peak power.
Construction & Durability
Block & Head:Cast-iron block and aluminum alloy cylinder heads
Bearings & Gears:Precision-engineered components for smooth operation and durability
Water Cooling:Enhances longevity by regulating operating temperatures
Weight:Approximately 400 kg
Key Features & Applications
Turbocharging (QD32T/QD32Ti):
Later models feature an intercooler and a Variable Geometry Turbocharger (VGT) for improved performance.
Applications:
Found in Nissan pickups (Navara, Frontier), industrial machinery, and marine applications.
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