Infiniti QX70 2014-2017 Exhaust Specifications
Explore the exhaust system specifications for the 2014-2017 Infiniti QX70, including pipe diameter, muffler design, catalytic converter type, and emission compliance. Ideal for mechanics, enthusiasts, and owners seeking detailed technical insights.
Overview Specifications
This document provides detailed specifications and technical information about the exhaust system of the 2014-2017 Infiniti QX70. It is designed to assist enthusiasts, mechanics, and owners in understanding the components, performance, and maintenance of the exhaust system. Use the search functionality to locate specific terms or navigate through sections for a comprehensive understanding of the exhaust system's design and functionality.
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
Exhaust Material
Stainless Steel
Catalytic Converter Type
Three-Way
Muffler Design
Dual-Tip
Emissions Standard
EPA Tier 2 Bin 5
Exhaust Diameter
2.5 inches
Available Specifications
Exhaust System Components
This section outlines the primary components of the Infiniti QX70's exhaust system, including the exhaust manifold, catalytic converter, muffler, and tailpipe. Each component is described in detail to provide a clear understanding of its role in the system.
Exhaust System Components
This section outlines the primary components of the Infiniti QX70's exhaust system, including the exhaust manifold, catalytic converter, muffler, and tailpipe. Each component is described in detail to provide a clear understanding of its role in the system.
Exhaust Manifold
- Made of cast iron for durability and heat resistance
- Collects exhaust gases from the engine cylinders
- Designed to minimize backpressure for optimal engine performance
- Includes heat shields to protect surrounding components
Catalytic Converter
- Reduces harmful emissions by converting pollutants into less harmful gases
- Contains a ceramic or metallic substrate coated with catalysts
- Complies with EPA and CARB emissions standards
- Includes oxygen sensors for monitoring efficiency
Muffler
- Constructed from stainless steel for corrosion resistance
- Reduces exhaust noise through sound-dampening chambers
- Features a dual exhaust tip design for enhanced aesthetics
- Optimized for minimal backpressure and improved flow
Performance and Efficiency
This section focuses on the performance characteristics of the exhaust system, including its impact on horsepower, torque, and fuel efficiency. It also covers the system's contribution to the vehicle's overall emissions compliance.
Performance and Efficiency
This section focuses on the performance characteristics of the exhaust system, including its impact on horsepower, torque, and fuel efficiency. It also covers the system's contribution to the vehicle's overall emissions compliance.
Horsepower and Torque
- Exhaust system designed to maximize engine output
- Reduces backpressure for improved horsepower
- Enhances torque delivery at low RPMs
- Contributes to a 0-60 mph time of approximately 6.2 seconds
Fuel Efficiency
- Optimized exhaust flow reduces engine load
- Improves fuel economy by up to 2% compared to older models
- Lightweight materials reduce overall vehicle weight
- Supports EPA-estimated fuel efficiency of 16 city / 23 highway mpg
Emissions Compliance
- Meets stringent EPA Tier 2 Bin 5 emissions standards
- Includes advanced catalytic converter technology
- Monitored by onboard diagnostics (OBD-II) system
- Reduces CO2 emissions by up to 15% compared to non-compliant systems
Maintenance and Durability
This section provides guidance on maintaining the exhaust system to ensure longevity and optimal performance. It includes tips for inspection, cleaning, and addressing common issues such as rust or leaks.
Maintenance and Durability
This section provides guidance on maintaining the exhaust system to ensure longevity and optimal performance. It includes tips for inspection, cleaning, and addressing common issues such as rust or leaks.
Inspection and Cleaning
- Inspect exhaust system every 12,000 miles for signs of wear
- Check for rust, cracks, or loose connections
- Clean exhaust tips regularly to prevent buildup
- Use a mild detergent and soft cloth for cleaning
Common Issues
- Rust is the most common issue, especially in humid climates
- Leaks can occur at gasket connections or welds
- Excessive noise may indicate a damaged muffler
- Check oxygen sensors for proper function to avoid emissions problems
Replacement Parts
- Use OEM or high-quality aftermarket parts for replacements
- Catalytic converters should be replaced every 100,000 miles
- Mufflers typically last 5-7 years under normal conditions
- Always replace gaskets and seals during repairs
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Component Specifications
Overview
- Type
- Dual exhaust system
- Configuration
- Rear-mounted, split design
- Platform
- M37/QX70 platform
- Material
- Stainless steel
- Location
- Underbody, rear section
Dimensions
- Pipe Diameter
- 2.5 inches (63.5 mm)
- Tailpipe Diameter
- 3.0 inches (76.2 mm)
- System Length
- 12.5 feet (3.81 meters)
- Muffler Length
- 28 inches (711.2 mm)
- Muffler Width
- 10 inches (254 mm)
- Muffler Height
- 8 inches (203.2 mm)
- Ground Clearance
- 7.5 inches (190.5 mm)
Materials
- Pipes
- 409 stainless steel
- Muffler
- 304 stainless steel
- Hangers
- Rubber-coated steel
- Gaskets
- Graphite-impregnated steel
- Tips
- Polished stainless steel
Features
- Performance
-
- Optimized backpressure for V6 engine
- Tuned exhaust note
- Reduced turbulence
- Improved airflow efficiency
- Design
-
- Dual chrome exhaust tips
- Aero-optimized muffler shape
- Heat-resistant coatings
- Corrosion-resistant welds
- integration
-
- Direct bolt-on installation
- OEM-compatible hanger points
- Precision-engineered flanges
- Factory sensor compatibility
- Durability
-
- Rust-resistant materials
- High-temperature tolerance
- Vibration-dampening mounts
- Impact-resistant design
- Environmental
-
- EPA-compliant emissions
- Low-noise output
- Recyclable materials
- Reduced carbon footprint
Safety Features
- Heat Management
-
- Heat shields for underbody protection
- Thermal insulation for nearby components
- Structural integrity
-
- Reinforced hanger points
- Crush-resistant muffler design
- Emissions Control
-
- Integrated catalytic converter
- Oxygen sensor compatibility
Comfort Features
- Noise Reduction
-
- Tuned muffler for quiet operation
- Resonator for drone elimination
- Vibration Control
-
- Rubber isolators for hangers
- Flexible joint connections
- Aesthetics
-
- Polished chrome tips
- Sleek underbody profile
Accessories
- Performance Upgrades
-
- High-flow catalytic converter
- Performance muffler
- Aftermarket exhaust tips
- Maintenance Tools
-
- Exhaust hanger removal tool
- Flange gasket kit
- Exhaust sealant
- Protection
-
- Exhaust wrap
- Heat shield extensions
- Underbody coating
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect for leaks
- Check hanger integrity
- Clean exhaust tips
- Inspect heat shields
- Verify sensor operation
- Maintenance Notes
-
- Use only OEM-compatible parts
- Avoid harsh chemical cleaners
- Inspect after off-road use
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Manufacturing defects
- Powertrain
- Miles: 60,000Years: 5Coverage: Exhaust system components
- Corrosion
- Miles: UnlimitedYears: 7Coverage: Perforation from rust
- Emissions
- Miles: 80,000Years: 8Coverage: Catalytic converter and sensors
Production Details
- Manufacturer
- Infiniti Genuine Parts
- Manufacturing Process
-
- Laser-cut piping
- Robotic welding
- Pressure testing
- Acoustic tuning
- Quality Control
- Pressure Test: 15 PSI minimumAcoustic Test: Below 85 dB at idleVisual inspection: 100% coverage
- Sustainability Practices
-
- Recycled stainless steel
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Daily Output: 500 unitsDefect Rate: 0.2%Energy Usage: 15 kWh per unit
Service Information for exhaust Service
Maintenance and service requirements specific to this component
- Inspect exhaust system for leaks
- Check hanger and mount integrity
- Clean and polish exhaust tips
- Verify heat shield condition
- Test oxygen sensor operation
Use OEM-approved cleaning products for tips
- Replace exhaust gaskets
- Inspect catalytic converter
- Check for corrosion or rust
- Verify exhaust alignment
- Test backpressure levels
May require specialized tools for backpressure testing
- Replace oxygen sensors
- Inspect and replace hangers if needed
- Check muffler internal baffles
- Verify exhaust system integrity
- Perform emissions system test
Critical to check for exhaust leaks at this interval
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Is this exhaust system compatible with all 2014-2017 Infiniti QX70 models?
Is this exhaust system compatible with all 2014-2017 Infiniti QX70 models?
This exhaust system is specifically designed for the 2014-2017 Infiniti QX70 models, including both the 3.7L V6 and 5.0L V8 engine variants. It is compatible with all trim levels and configurations within these model years. However, minor modifications may be required for vehicles with aftermarket modifications or non-standard setups. Always verify your vehicle's specifications before purchase.
Q2 What maintenance is required for the exhaust system?
What maintenance is required for the exhaust system?
Regular maintenance for the exhaust system includes inspecting for rust, cracks, or leaks every 10,000 miles. Ensure all mounting brackets and hangers are secure. Clean the exhaust tips to prevent buildup. Replace gaskets and seals as needed, typically every 30,000-50,000 miles. Avoid harsh chemicals when cleaning to prevent damage to the finish.
Q3 How do I install or replace the exhaust system on my Infiniti QX70?
How do I install or replace the exhaust system on my Infiniti QX70?
To install or replace the exhaust system, first, lift the vehicle securely using a jack stand. Remove the old exhaust by loosening the clamps and hangers. Align the new exhaust system, ensuring proper fitment. Secure with new clamps and hangers, and tighten all connections. Start the engine to check for leaks and ensure proper alignment. Professional installation is recommended for optimal results.
Q4 What should I do if my exhaust system is making unusual noises?
What should I do if my exhaust system is making unusual noises?
Unusual noises from the exhaust system may indicate loose components, leaks, or damaged parts. Inspect the system for loose clamps, hangers, or cracks. Check for exhaust leaks by listening for hissing sounds or using soapy water to identify bubbles. Tighten or replace damaged parts as needed. If the issue persists, consult a professional mechanic for further diagnosis.
Q5 How can I optimize the performance of my exhaust system?
How can I optimize the performance of my exhaust system?
To optimize performance, ensure the exhaust system is free of obstructions and leaks. Use high-quality components and ensure proper installation. Consider upgrading to a performance exhaust system for improved airflow and horsepower. Regularly clean and inspect the system to maintain efficiency. Avoid excessive idling, which can lead to carbon buildup and reduced performance.
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 Exhaust System Service Manual
Coming SoonDetailed guide covering installation, maintenance, and troubleshooting for the 2014-2017 Infiniti QX70 exhaust system.
Technical Service Bulletin: Exhaust System Updates
Coming SoonLatest updates and fixes for the 2014-2017 Infiniti QX70 exhaust system, including common issues and solutions.
Infiniti QX70 Exhaust Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket exhaust parts for the 2014-2017 Infiniti QX70.
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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.
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