Infiniti QX50 2014-2017 3.7L V6 Engine Specifications
Explore detailed technical specifications for the 3.7L V6 engine in the 2014-2017 Infiniti QX50. Learn about horsepower, torque, maintenance, and performance upgrades in this comprehensive guide.
Overview Specifications
This document provides detailed specifications and technical information about the 3.7L V6 engine used in the 2014-2017 Infiniti QX50. It is designed to assist enthusiasts, mechanics, and owners in understanding the engine's performance, design, and maintenance requirements. Use the search functionality to locate specific details or navigate through the sections for a comprehensive overview of the engine's features and capabilities.
How to Use
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Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.
Key Specifications
Displacement
3.7 liters
Horsepower
325 hp
Torque
267 lb-ft
Compression Ratio
11.0:1
Fuel System
Direct Injection
Available Specifications
Engine Performance
This section covers the performance metrics of the 3.7L V6 engine, including horsepower, torque, and acceleration. It also highlights the engine's responsiveness and fuel efficiency, making it a reliable choice for the Infiniti QX50.
Engine Performance
This section covers the performance metrics of the 3.7L V6 engine, including horsepower, torque, and acceleration. It also highlights the engine's responsiveness and fuel efficiency, making it a reliable choice for the Infiniti QX50.
Power Output
- 325 horsepower at 7,000 rpm
- 267 lb-ft of torque at 5,200 rpm
- 0-60 mph acceleration in 5.8 seconds
- Top speed of 155 mph (electronically limited)
- Direct injection fuel system
- High-flow exhaust system
Fuel Efficiency
- EPA-estimated 17 mpg city
- EPA-estimated 24 mpg highway
- Combined fuel economy of 20 mpg
- Eco mode for improved efficiency
- Lightweight aluminum engine block
- Low-friction piston rings
Engine Design
This section delves into the engineering and design features of the 3.7L V6 engine, including its construction materials, valve train, and cooling system. These elements contribute to the engine's durability and performance.
Engine Design
This section delves into the engineering and design features of the 3.7L V6 engine, including its construction materials, valve train, and cooling system. These elements contribute to the engine's durability and performance.
Construction
- Aluminum block and cylinder heads
- Dual overhead camshafts (DOHC)
- 24-valve configuration
- Forged steel crankshaft
- High-strength connecting rods
- Plasma-sprayed cylinder bores
Cooling System
- High-capacity radiator
- Dual electric cooling fans
- Thermostatically controlled coolant flow
- Auxiliary transmission cooler
- Integrated oil cooler
- Low-viscosity engine oil for reduced friction
Maintenance and Durability
This section provides information on the maintenance requirements and durability features of the 3.7L V6 engine. It includes recommended service intervals, common maintenance tasks, and tips for ensuring long-term reliability.
Maintenance and Durability
This section provides information on the maintenance requirements and durability features of the 3.7L V6 engine. It includes recommended service intervals, common maintenance tasks, and tips for ensuring long-term reliability.
Service Intervals
- Oil change every 5,000 miles
- Spark plug replacement every 60,000 miles
- Timing chain inspection every 100,000 miles
- Air filter replacement every 15,000 miles
- Coolant flush every 30,000 miles
- Fuel system cleaning every 20,000 miles
Durability Features
- Long-life platinum spark plugs
- Corrosion-resistant materials
- Sealed bearings for reduced wear
- High-tensile strength bolts
- Advanced engine management system
- Robust oil filtration system
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Engine Specifications
Overview
- Type
- Naturally aspirated V6
- Configuration
- 60-degree V-angle
- Platform
- VQ37VHR
- Material
- Aluminum block and heads
- Location
- Front longitudinal
Dimensions
- Length
- 24.8 inches (630 mm)
- Width
- 28.3 inches (720 mm)
- Height
- 26.4 inches (670 mm)
- Displacement
- 3.7 liters (3696 cc)
- Bore
- 95.5 mm (3.76 in)
- Stroke
- 86 mm (3.39 in)
- Weight
- 363 lbs (165 kg)
Materials
- Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Titanium intake, steel exhaust
Features
- Performance
-
- Dual overhead camshafts (DOHC)
- Variable Valve Event and Lift (VVEL)
- 10.3:1 compression ratio
- 325 hp @ 7000 rpm
- 267 lb-ft torque @ 5200 rpm
- Fuel System
-
- Sequential multi-port fuel injection
- Electronic throttle control
- Premium unleaded fuel required
- Cooling
-
- High-capacity water pump
- Dual-path cooling system
- Aluminum radiator
- Ignition
-
- Direct ignition system
- Iridium-tipped spark plugs
- Coil-on-plug design
- Emissions
-
- Low-friction piston rings
- Close-coupled catalytic converters
- EGR system
Safety Features
- Engine Protection
-
- Knock sensor system
- Oil pressure sensor
- Coolant temperature sensor
- Overheat Protection
-
- High-temperature warning system
- Automatic engine shutdown
- Fuel Safety
-
- Fuel cut-off in crash detection
- Leak detection system
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Tuned intake manifold
- Vibration Control
-
- Balanced crankshaft
- Counter-rotating balance shafts
- Dual-mass flywheel
- Climate Control
-
- Auxiliary electric water pump
- Heated throttle body
- Cold-start enrichment system
Accessories
- Engine Bay
-
- High-capacity alternator
- Maintenance-free battery
- Power steering pump
- Cooling System
-
- Electric cooling fan
- Thermostatic clutch fan
- Coolant reservoir
- Exhaust System
-
- Stainless steel headers
- Dual exhaust pipes
- Active sound enhancement
Maintenance
- Service interval
- Every 5,000 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug inspection
- Air filter replacement
- Coolant level check
- Belt tension inspection
- Maintenance Notes
- Use synthetic 5W-30 oil for optimal performance
Warranty
- Basic
- Miles: 60,000Years: 4Coverage: Bumper-to-bumper
- Powertrain
- Miles: 100,000Years: 6Coverage: Engine and transmission
- Emissions
- Miles: 70,000Years: 8Coverage: Catalytic converter and sensors
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation from rust
Production Details
- Manufacturer
- Nissan Motor Corporation
- Manufacturing Process
-
- Precision casting for block and heads
- CNC machining for critical components
- Automated assembly line
- Quality Control
- Dimensional Checks: Laser scanningPerformance Testing: Dyno testingLeak Testing: Air and fluid pressure tests
- Sustainability Practices
-
- Recycled aluminum usage
- Low-VOC coatings
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.02%Energy Consumption: 15 kWh per engine
Service Information for 3.7l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect spark plugs
- Check coolant level
- Inspect belts and hoses
- Check battery terminals
Use only synthetic 5W-30 oil
- Replace air filter
- Inspect fuel system
- Check ignition system
- Inspect exhaust system
- Test engine performance
Perform throttle body cleaning if necessary
- Replace spark plugs
- Flush cooling system
- Inspect timing chain
- Replace drive belts
- Check engine mounts
Major service interval - requires specialized tools
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 3.7L V6 engine compatible with other Infiniti models?
Is the 3.7L V6 engine compatible with other Infiniti models?
The 3.7L V6 engine used in the 2014-2017 Infiniti QX50 is primarily designed for this model. While it shares similarities with engines in other Infiniti vehicles like the G37 and Q50, compatibility depends on specific configurations, such as mounting points, ECU programming, and transmission pairing. Always verify with a certified technician or Infiniti's official documentation before attempting cross-model compatibility.
Q2 What are the maintenance requirements for the 3.7L V6 engine?
What are the maintenance requirements for the 3.7L V6 engine?
The 3.7L V6 engine requires regular maintenance to ensure optimal performance. Key tasks include oil changes every 5,000-7,500 miles, air filter replacement every 15,000-30,000 miles, and spark plug replacement every 60,000 miles. Additionally, inspect the timing chain, coolant system, and belts periodically. Adhering to the manufacturer's maintenance schedule in the owner's manual is crucial for longevity.
Q3 How do I replace the 3.7L V6 engine in my Infiniti QX50?
How do I replace the 3.7L V6 engine in my Infiniti QX50?
Replacing the 3.7L V6 engine involves several steps: disconnect the battery, drain fluids, remove the intake and exhaust systems, detach the transmission, and unbolt the engine mounts. Use a hoist to lift the engine out. Installation is the reverse process, ensuring all connections are secure. Professional assistance is recommended due to the complexity and need for specialized tools.
Q4 What should I do if my 3.7L V6 engine is misfiring?
What should I do if my 3.7L V6 engine is misfiring?
Misfiring in the 3.7L V6 engine can result from faulty spark plugs, ignition coils, or fuel injectors. Start by scanning for error codes using an OBD-II scanner. Inspect and replace spark plugs or coils if necessary. Check fuel pressure and injector functionality. If issues persist, consult a technician to inspect the engine's compression or timing system.
Q5 How can I optimize the performance of my 3.7L V6 engine?
How can I optimize the performance of my 3.7L V6 engine?
To optimize performance, use high-quality synthetic oil and premium fuel. Regularly clean the throttle body and replace air filters. Consider upgrading the exhaust system and air intake for better airflow. Tuning the ECU can also enhance power and efficiency. Always ensure modifications comply with local regulations and do not void the vehicle's warranty.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Infiniti QX50 3.7L V6 Engine Service Manual
Coming SoonDetailed guide covering maintenance, repair, and troubleshooting for the 3.7L V6 engine in the 2014-2017 Infiniti QX50.
Technical Service Bulletin: 3.7L V6 Engine Updates
Coming SoonLatest updates and fixes for the 3.7L V6 engine, including software patches and hardware recommendations.
Infiniti QX50 Parts and Accessories Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 3.7L V6 engine and related components.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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