Infiniti QX70 2014-2017 3.7L V6 Engine Specifications
Explore detailed technical specifications for the 3.7L V6 engine in the 2014-2017 Infiniti QX70. Learn about horsepower, torque, fuel efficiency, and maintenance tips for optimal performance.
Overview Specifications
This document provides detailed specifications and technical information about the 3.7L V6 engine used in the 2014-2017 Infiniti QX70. It is designed to assist enthusiasts, mechanics, and owners in understanding the engine's performance, design, and maintenance requirements. Use the search and navigation instructions to quickly find relevant details or explore the sections for comprehensive insights.
How to Use
Use the search bar to enter keywords related to the engine, such as 'horsepower' or 'torque'. Results will highlight relevant sections and subsections for quick access.
Scroll through the sections or use the table of contents to jump to specific topics. 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
10.3:1
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 efficiency in various driving conditions.
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 efficiency in various driving conditions.
Power Output
- Horsepower: 325 hp @ 7000 rpm
- Torque: 267 lb-ft @ 5200 rpm
- Redline: 7500 rpm
- 0-60 mph: 6.2 seconds
- Top speed: 155 mph (electronically limited)
- Fuel efficiency: 16 mpg city / 23 mpg highway
Engine Design
- Naturally aspirated V6 configuration
- DOHC (Dual Overhead Camshaft) design
- Aluminum block and cylinder heads
- Variable Valve Event and Lift (VVEL) technology
- 10.3:1 compression ratio
- Direct injection fuel system
Engine Components
This section details the key components of the 3.7L V6 engine, including the intake and exhaust systems, cooling system, and lubrication system. It provides insights into the materials and technologies used for optimal performance.
Engine Components
This section details the key components of the 3.7L V6 engine, including the intake and exhaust systems, cooling system, and lubrication system. It provides insights into the materials and technologies used for optimal performance.
Intake and Exhaust
- High-flow intake manifold
- Dual exhaust system with stainless steel piping
- Tuned exhaust for enhanced sound and performance
- Electronic throttle control
- Air filter with high dust capacity
- Exhaust gas recirculation (EGR) system
Cooling and Lubrication
- High-capacity radiator with electric cooling fan
- Oil cooler integrated into the engine block
- Synthetic oil recommended for optimal performance
- Oil capacity: 5.1 quarts (with filter)
- Coolant capacity: 9.5 quarts
- Thermostat-controlled cooling system
Maintenance and Durability
This section provides guidelines for maintaining the 3.7L V6 engine, including recommended service intervals, common maintenance tasks, and tips for ensuring long-term durability.
Maintenance and Durability
This section provides guidelines for maintaining the 3.7L V6 engine, including recommended service intervals, common maintenance tasks, and tips for ensuring long-term durability.
Service Intervals
- Oil change: Every 5,000 miles or 6 months
- Spark plug replacement: Every 60,000 miles
- Timing chain: No replacement required under normal conditions
- Air filter replacement: Every 15,000 miles
- Coolant flush: Every 30,000 miles
- Fuel system cleaning: Every 20,000 miles
Durability Features
- Forged steel crankshaft for high strength
- Piston cooling jets for reduced thermal stress
- High-tensile cylinder head bolts
- Corrosion-resistant materials used throughout
- Extended-life coolant for reduced maintenance
- Robust engine mounts for reduced vibration
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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-engine, longitudinal
Dimensions
- Displacement
- 3.7 liters (3696 cc)
- Bore
- 95.5 mm (3.76 in)
- Stroke
- 86.0 mm (3.39 in)
- Length
- 610 mm (24.02 in)
- Width
- 720 mm (28.35 in)
- Height
- 640 mm (25.20 in)
- Weight
- 172 kg (379 lbs)
Materials
- Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Titanium intake, steel exhaust
Features
- Performance
-
- 325 hp @ 7000 rpm
- 267 lb-ft torque @ 5200 rpm
- 7500 rpm redline
- Dual overhead camshafts (DOHC)
- Fuel System
-
- Direct injection
- Electronic throttle control
- Variable valve timing (VVT)
- Cooling
-
- Liquid-cooled
- High-capacity radiator
- Electric cooling fan
- Ignition
-
- Coil-on-plug ignition
- Platinum-tipped spark plugs
- Knock control system
- Emissions
-
- Catalytic converters
- EGR system
- OBD-II compliant
Safety Features
- Engine Protection
-
- Low oil pressure shutdown
- Overheat protection
- Knock sensor system
- Fuel Safety
-
- Leak detection system
- Automatic fuel cutoff
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Vibration Control
-
- Balanced crankshaft
- Dual-mass flywheel
Accessories
- intake
-
- High-flow air filter
- Resonator chamber
- Mass airflow sensor
- Exhaust
-
- Dual exhaust system
- Stainless steel headers
- Active exhaust valves
- Electrical
-
- 150-amp alternator
- Maintenance-free battery
- Electronic control unit (ECU)
Maintenance
- Service interval
- Every 5,000 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug inspection
- Air filter replacement
- Coolant flush
- Timing chain inspection
- Maintenance Notes
- Use synthetic 5W-30 oil, premium fuel recommended
Warranty
- Basic
- Miles: 60,000Years: 4Coverage: Bumper-to-bumper
- Powertrain
- Miles: 100,000Years: 6Coverage: Engine and transmission
- Emissions
- Miles: 80,000Years: 8Coverage: Catalytic converter and ECU
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation only
Production Details
- Manufacturer
- Nissan
- Manufacturing Process
-
- Casting for block and heads
- CNC machining
- Robotic assembly
- Quality Control
- Testing: Dyno testing, Leak testing, Cold start testingStandards: ISO 9001 certified
- Sustainability
-
- Recycled aluminum usage
- Low-emission manufacturing
- Energy-efficient facilities
- Production Metrics
- Units Per Day: 500Defect Rate: 0.01%Energy Usage: 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 air filter
- Check coolant level
- Inspect belts and hoses
- Check for leaks
Use only synthetic 5W-30 oil
- Replace air filter
- Inspect spark plugs
- Check ignition system
- Inspect fuel system
- Test emissions system
Premium fuel recommended for optimal performance
- Replace spark plugs
- Flush coolant system
- Inspect timing chain
- Check valve clearance
- Test compression
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 is primarily designed for the 2014-2017 Infiniti QX70. While it shares similarities with engines in other Infiniti models like the Q50 and Q60, compatibility depends on specific model years and configurations. Always verify with a certified technician or Infiniti's official documentation before attempting cross-model installations.
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, including oil changes every 5,000-7,500 miles, air filter replacements every 15,000 miles, and spark plug replacements every 60,000 miles. Additionally, inspect the timing chain and coolant system periodically. Adhering to the manufacturer's maintenance schedule ensures optimal performance and longevity.
Q3 How do I replace the 3.7L V6 engine in my Infiniti QX70?
How do I replace the 3.7L V6 engine in my Infiniti QX70?
Replacing the 3.7L V6 engine involves disconnecting the battery, draining fluids, and removing components like the intake manifold, exhaust system, and wiring harness. Use a hoist to lift the engine out and install the new one in reverse order. Ensure all connections are secure and refill fluids. Professional assistance is recommended for this complex procedure.
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 damaged components as needed. If the issue persists, check the fuel system and compression levels. Consult a technician for advanced diagnostics.
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, upgrade to high-flow air filters, and ensure proper tire inflation. Regularly clean the throttle body and fuel injectors. Consider performance tuning or ECU remapping for enhanced power output. Avoid aggressive driving to maintain engine health and efficiency.
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 QX70 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 QX70.
Technical Service Bulletin for 3.7L V6 Engine Updates
Coming SoonLatest updates and fixes for the 3.7L V6 engine, addressing common issues and performance improvements.
Infiniti QX70 3.7L V6 Engine Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 3.7L V6 engine, including part numbers and compatibility details.
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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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