Infiniti Q45 1997-2001 4.1L V8 Engine Specifications
Explore detailed technical specifications for the 4.1L V8 engine in the 1997-2001 Infiniti Q45. Learn about horsepower, torque, fuel system, and more for maintenance, repair, or upgrades.
Overview Specifications
This document provides detailed specifications and technical information for the 4.1L V8 engine used in the 1997-2001 Infiniti Q45. It is designed to assist enthusiasts, mechanics, and researchers in understanding the engine's design, performance, and maintenance requirements. The content is organized into sections for easy navigation, with specific details on engine components, performance metrics, and maintenance tips. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search functionality by entering keywords related to the engine specifications you are looking for. The search will highlight relevant sections and details within the document.
Navigate through the document by clicking on the section titles in the table of contents. Each section is divided into subsections for specific topics, making it easy to find detailed information.
Key Specifications
Displacement
4.1 liters
Horsepower
266 HP
Torque
278 lb-ft
Compression Ratio
10.5:1
Fuel System
Direct Injection
Available Specifications
Engine Design
This section covers the fundamental design aspects of the 4.1L V8 engine, including its architecture, materials, and key components. Learn about the engine's construction and how it contributes to its performance and durability.
Engine Design
This section covers the fundamental design aspects of the 4.1L V8 engine, including its architecture, materials, and key components. Learn about the engine's construction and how it contributes to its performance and durability.
Architecture
- 90-degree V8 configuration
- Aluminum block and cylinder heads
- Dual overhead camshafts (DOHC)
- 4 valves per cylinder
- Hydraulic lifters
- Timing chain drive
Materials and Construction
- Lightweight aluminum construction
- Forged steel crankshaft
- High-strength connecting rods
- Aluminum pistons with low-friction coatings
- Multi-layer steel head gaskets
- Thermal management design
Performance Metrics
This section provides detailed performance data for the 4.1L V8 engine, including power output, torque, fuel efficiency, and acceleration. Understand how the engine delivers its performance across various driving conditions.
Performance Metrics
This section provides detailed performance data for the 4.1L V8 engine, including power output, torque, fuel efficiency, and acceleration. Understand how the engine delivers its performance across various driving conditions.
Power and Torque
- 266 horsepower @ 5600 RPM
- 278 lb-ft of torque @ 4000 RPM
- Broad torque curve for smooth acceleration
- Electronic throttle control
- Optimized intake and exhaust systems
- High-performance tuning
Fuel Efficiency
- EPA estimated 17 MPG city
- EPA estimated 23 MPG highway
- Direct fuel injection technology
- Variable valve timing
- Efficient combustion chamber design
- Low rolling resistance components
Maintenance and Reliability
This section focuses on the maintenance requirements and reliability aspects of the 4.1L V8 engine. Learn about recommended service intervals, common issues, and tips for ensuring long-term engine health.
Maintenance and Reliability
This section focuses on the maintenance requirements and reliability aspects of the 4.1L V8 engine. Learn about recommended service intervals, common issues, and tips for ensuring long-term engine health.
Service Intervals
- Oil change every 3,000-5,000 miles
- Spark plug replacement every 60,000 miles
- Timing chain inspection every 100,000 miles
- Coolant flush every 30,000 miles
- Air filter replacement every 15,000 miles
- Transmission fluid change every 60,000 miles
Common Issues
- Timing chain tensioner wear
- Oil leaks from valve cover gaskets
- Coolant leaks from radiator hoses
- Throttle body sensor failure
- Ignition coil pack degradation
- Exhaust manifold cracks
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Engine Specifications
Overview
- Type
- V8
- Configuration
- 90° V-angle
- Displacement
- 4.1 liters (4130 cc)
- Aspiration
- Naturally aspirated
- Location
- Front longitudinal
- Manufacturer
- Nissan
Dimensions
- Length
- 27.5 inches (698.5 mm)
- Width
- 28.9 inches (734 mm)
- Height
- 26.2 inches (665.5 mm)
- Weight
- 440 lbs (199.5 kg)
- Bore
- 3.43 inches (87 mm)
- Stroke
- 3.5 inches (89 mm)
- Compression Ratio
- 10.5:1
Materials
- Block
- Cast iron
- Cylinder Heads
- Aluminum alloy
- Crankshaft
- Forged steel
- Pistons
- Aluminum alloy
- Valves
- Stainless steel
Features
- Engine Management
-
- Sequential multi-point fuel injection
- Distributorless ignition system
- Electronic throttle control
- Cooling System
-
- Liquid-cooled
- High-capacity radiator
- Electric cooling fan
- Oil System
-
- Wet sump lubrication
- High-flow oil pump
- Oil cooler
- Exhaust System
-
- Dual exhaust
- Stainless steel headers
- Catalytic converters
- Performance
-
- Variable valve timing
- High-flow intake manifold
- Optimized air-fuel mixture
Safety Features
- Engine Protection
-
- Knock sensor
- Overheat protection
- Low oil pressure warning
- Emission Control
-
- OBD-II compliant
- EGR system
- Catalytic converters
Comfort Features
- Noise Reduction
-
- Engine mounts with vibration dampening
- Acoustic engine cover
- Balanced crankshaft
- Smooth Operation
-
- Variable valve timing
- Hydraulic lifters
- Precision-engineered components
Accessories
- Belts And Pulleys
-
- Serpentine belt
- Accessory drive pulley
- Tensioner assembly
- Sensors
-
- Crankshaft position sensor
- Camshaft position sensor
- Knock sensor
- Cooling Components
-
- Thermostat
- Water pump
- Radiator hoses
Maintenance
- Service interval
- Every 7,500 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug inspection
- Air filter replacement
- Timing belt inspection
- Coolant flush
- Throttle body cleaning
- Maintenance Notes
- Use synthetic oil for optimal performance. Timing belt replacement recommended every 60,000 miles.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Engine and transmission
- Emission Warranty
- Miles: 80,000Years: 8Coverage: Catalytic converter and related components
- Corrosion Warranty
- Miles: UnlimitedYears: 5Coverage: Perforation from rust
Production Details
- Manufacturer
- Nissan Motor Co., Ltd.
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% component inspectionTesting: Dyno testing for performanceStandards: ISO 9001 certified
- Sustainability Practices
-
- Recyclable materials
- Low-emission manufacturing
- Energy-efficient processes
- Production Metrics
-
- Annual production volume: 50,000 units
- Manufacturing lead time: 4 weeks
- Defect rate: <0.1%
Service Information for 4.1l v8 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect spark plugs
- Check air filter
- Inspect belts and hoses
- Check coolant level
Use synthetic oil for optimal performance.
- Replace air filter
- Inspect timing belt
- Check fuel system
- Inspect exhaust system
- Test battery and charging system
Ensure timing belt is within recommended service life.
- Replace timing belt
- Replace water pump
- Flush coolant system
- Inspect and replace spark plugs
- Perform engine compression test
Critical to replace timing belt to prevent engine damage.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 4.1L V8 engine compatible with other Infiniti models?
Is the 4.1L V8 engine compatible with other Infiniti models?
The 4.1L V8 engine is specifically designed for the 1997-2001 Infiniti Q45. While it shares some design principles with other V8 engines, it is not directly compatible with other Infiniti models due to differences in mounting points, electronics, and cooling systems. Always verify compatibility with a professional before attempting any swaps or modifications.
Q2 What are the maintenance requirements for the 4.1L V8 engine?
What are the maintenance requirements for the 4.1L V8 engine?
The 4.1L V8 engine requires regular maintenance to ensure optimal performance. Key tasks include oil changes every 3,000-5,000 miles, spark plug replacement every 30,000 miles, and timing belt inspection every 60,000 miles. Additionally, coolant flushes, air filter replacements, and fuel system cleaning should be performed as per the manufacturer’s schedule.
Q3 How do I replace the 4.1L V8 engine in my Infiniti Q45?
How do I replace the 4.1L V8 engine in my Infiniti Q45?
Replacing the 4.1L V8 engine involves several steps: 1) Disconnect the battery and drain fluids. 2) Remove the intake manifold, exhaust system, and accessories. 3) Unbolt the engine mounts and transmission connections. 4) Lift the engine out using a hoist. Installation is the reverse process. Ensure all connections are secure and fluids are refilled. Professional assistance is recommended.
Q4 What are common troubleshooting steps for the 4.1L V8 engine?
What are common troubleshooting steps for the 4.1L V8 engine?
Common issues include rough idling, loss of power, and overheating. Start by checking for error codes with an OBD-II scanner. Inspect spark plugs, fuel injectors, and the air intake system for blockages or wear. Verify coolant levels and inspect the radiator for leaks. If problems persist, consult a professional mechanic for further diagnostics.
Q5 How can I optimize the performance of my 4.1L V8 engine?
How can I optimize the performance of my 4.1L V8 engine?
To optimize performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Regularly clean the throttle body and fuel injectors. Consider reprogramming the ECU for improved power and efficiency. Ensure all maintenance tasks are performed on time to keep the engine in peak condition.
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 Q45 Service Manual (1997-2001)
Coming SoonThis comprehensive manual covers all aspects of the 4.1L V8 engine, including maintenance, repair, and troubleshooting procedures.
Technical Service Bulletin for 4.1L V8 Engine
Coming SoonThis bulletin addresses common issues and updates for the 4.1L V8 engine, including recommended fixes and part updates.
Infiniti Q45 Parts Catalog
Coming SoonThis catalog provides detailed information on OEM and aftermarket parts for the 1997-2001 Infiniti Q45, including the 4.1L V8 engine.
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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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