Infiniti Q45 1990-1996 Drivetrain Specifications
Explore the detailed drivetrain specifications for the 1990-1996 Infiniti Q45. Learn about the engine, transmission, differential, and more. Perfect for mechanics, enthusiasts, and owners seeking reliable technical data for maintenance, repairs, and upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 1990-1996 Infiniti Q45. It covers major components, performance characteristics, and maintenance guidelines. Use this guide to understand the vehicle's drivetrain system, troubleshoot issues, or plan upgrades. The document is organized into sections for easy navigation, and a quick reference table is included for key specifications.
How to Use
Use the search function to quickly locate specific terms or components within the document. Enter keywords related to the drivetrain system, such as 'transmission' or 'differential,' to find relevant sections.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is labeled with a title and includes subsections for detailed information.
Key Specifications
Engine Type
4.5L V8
Horsepower
278 HP
Transmission
4-speed automatic
Drive Type
Rear-wheel drive
Final Drive Ratio
3.54:1
Available Specifications
Engine and Transmission
This section covers the engine and transmission specifications of the 1990-1996 Infiniti Q45. It includes details on the engine's power output, transmission type, and performance characteristics.
Engine and Transmission
This section covers the engine and transmission specifications of the 1990-1996 Infiniti Q45. It includes details on the engine's power output, transmission type, and performance characteristics.
Engine Specifications
- 4.5L V8 engine with 278 horsepower
- DOHC (Dual Overhead Cam) design
- Electronic fuel injection system
- Torque output of 292 lb-ft at 4,000 RPM
- Aluminum alloy engine block
- Redline at 6,800 RPM
Transmission Details
- 4-speed automatic transmission
- Electronic shift control system
- Rear-wheel drive configuration
- Lock-up torque converter for improved efficiency
Differential and Driveshaft
This section provides information about the differential and driveshaft components, including their design, function, and maintenance requirements.
Differential and Driveshaft
This section provides information about the differential and driveshaft components, including their design, function, and maintenance requirements.
Differential Specifications
- Open differential system
- 3.54:1 final drive ratio
- Limited-slip differential optional on some models
- Sealed unit for reduced maintenance
Driveshaft Details
- Two-piece driveshaft design
- Balanced for smooth operation
- Steel construction for durability
- Universal joints for flexibility
Suspension and Steering
This section outlines the suspension and steering components that interact with the drivetrain, ensuring optimal handling and performance.
Suspension and Steering
This section outlines the suspension and steering components that interact with the drivetrain, ensuring optimal handling and performance.
Suspension System
- Independent double-wishbone front suspension
- Independent multi-link rear suspension
- Hydraulic shock absorbers
- Stabilizer bars for improved stability
Steering Mechanism
- Power-assisted rack-and-pinion steering
- Steering ratio of 16.1:1
- Variable power assist for ease of handling
- Tilt-adjustable steering column
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Component Specifications
Overview
- Type
- Rear-wheel drive
- Configuration
- Longitudinal engine placement
- Platform
- FR-L platform
- Material
- Steel and aluminum construction
- Location
- Underbody, centered rear axle
Dimensions
- Driveshaft Length
- 72.8 in (1849 mm)
- Axle Width
- 58.3 in (1481 mm)
- Differential Diameter
- 12.6 in (320 mm)
- Transmission Length
- 28.7 in (729 mm)
- Propeller Shaft Diameter
- 3.5 in (89 mm)
- Final Drive Ratio
- 3.54:1
- Wheelbase
- 113.4 in (2880 mm)
Materials
- Driveshaft
- High-strength steel
- Differential Housing
- Cast iron
- Axle Shafts
- Alloy steel
- Transmission Case
- Aluminum alloy
- Mounts
- Rubber and polyurethane
Features
- Transmission
-
- 4-speed automatic
- Electronic control module
- Lock-up torque converter
- Overdrive function
- Differential
-
- Limited-slip differential
- Viscous coupling
- Sealed gear unit
- Oil cooler compatibility
- Driveshaft
-
- Two-piece design
- Balanced assembly
- U-joint construction
- Protective coating
- Axles
-
- Semi-floating design
- Spline shaft connection
- Sealed bearings
- ABS compatible
- Mounting
-
- Hydraulic engine mounts
- Rubber transmission mount
- Reinforced crossmember
- Vibration dampening
Safety Features
- Structural
-
- Reinforced frame rails
- Crash-resistant driveshaft tunnel
- Electronic
-
- Traction control system
- ABS integration
- Mechanical
-
- Driveshaft safety loop
- Sealed fuel and brake lines
Comfort Features
- Vibration Control
-
- Hydraulic engine mounts
- Balanced driveshaft
- Isolated transmission mount
- Noise Reduction
-
- Sound-deadening materials
- Sealed differential unit
- Insulated tunnel
- Performance
-
- Smooth power delivery
- Quick shift response
- Stable handling
Accessories
- Performance
-
- Limited-slip differential
- Axle oil cooler
- Upgraded mounts
- Maintenance
-
- Differential service kit
- Driveshaft balancer
- Transmission flush kit
- Protection
-
- Underbody shield
- Differential guard
- Driveshaft loop
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid checks and changes
- Mount inspection
- U-joint lubrication
- Seal inspection
- Balance check
- Maintenance Notes
- Use only manufacturer-recommended fluids and parts
Warranty
- Basic
- Miles: 36000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60000Years: 5Coverage: Transmission, driveshaft, differential
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Rust perforation
- Emissions
- Miles: 50000Years: 2Coverage: Emission-related components
Production Details
- Manufacturer
- Nissan Motors
- Manufacturing Process
-
- Precision machining
- Robotic assembly
- Quality testing
- Quality Control
- Testing: Dynamic balance testinginspection: X-ray and ultrasonic inspectionStandards: ISO 9001 certified
- Sustainability Practices
-
- Recycled materials
- Waste reduction
- Energy-efficient processes
- Production Metrics
- Units Per Day: 250Defect Rate: Less than 0.1%Efficiency: 95%
Service Information for drivetrain Service
Maintenance and service requirements specific to this component
- Inspect differential fluid
- Check driveshaft balance
- Lubricate U-joints
- Inspect mounts and bushings
- Check transmission fluid level
Use only manufacturer-recommended fluids
- Replace differential fluid
- Inspect axle seals
- Check transmission fluid condition
- Test traction control system
- Inspect ABS sensors
Special tools required for differential service
- Replace transmission fluid
- Inspect driveshaft U-joints
- Check differential bearings
- Test ABS functionality
- Inspect all mounts
Consider replacing worn components proactively
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the compatibility of the drivetrain components for the 1990-1996 Infiniti Q45?
What is the compatibility of the drivetrain components for the 1990-1996 Infiniti Q45?
The drivetrain for the 1990-1996 Infiniti Q45 includes a rear-wheel-drive system with a 4.5L V8 engine. The transmission is a 4-speed automatic, specifically the RE4R01A model. The differential is a limited-slip type, and the driveshaft is a two-piece design. These components are compatible only within the 1990-1996 model years due to variations in mounting points and electronic controls in later models.
Q2 What are the maintenance requirements for the drivetrain of the 1990-1996 Infiniti Q45?
What are the maintenance requirements for the drivetrain of the 1990-1996 Infiniti Q45?
Regular maintenance for the drivetrain includes checking and replacing the transmission fluid every 30,000 miles, inspecting the driveshaft for wear or imbalance, and ensuring the differential fluid is changed every 50,000 miles. Additionally, the universal joints should be lubricated periodically, and the rear axle seals should be inspected for leaks. Proper alignment and tire rotation are also essential to prevent excessive drivetrain wear.
Q3 How do I replace the driveshaft on a 1990-1996 Infiniti Q45?
How do I replace the driveshaft on a 1990-1996 Infiniti Q45?
To replace the driveshaft, first, secure the vehicle on a lift or jack stands. Remove the exhaust system and heat shields to access the driveshaft. Mark the driveshaft and differential flange for alignment. Unbolt the driveshaft from the differential and transmission. Install the new driveshaft by aligning the marks and torquing the bolts to the manufacturer's specifications. Reinstall the exhaust system and test for proper operation.
Q4 What should I do if my 1990-1996 Infiniti Q45 drivetrain is making noise?
What should I do if my 1990-1996 Infiniti Q45 drivetrain is making noise?
If your drivetrain is making noise, first inspect the driveshaft for imbalance or worn universal joints. Check the differential for low fluid levels or worn gears. Noise from the transmission could indicate low fluid or internal wear. Vibrations may point to improper alignment or worn mounts. Address any identified issues promptly to avoid further damage.
Q5 How can I optimize the performance of my 1990-1996 Infiniti Q45 drivetrain?
How can I optimize the performance of my 1990-1996 Infiniti Q45 drivetrain?
To optimize drivetrain performance, use high-quality synthetic transmission and differential fluids. Ensure the driveshaft is balanced and the universal joints are in good condition. Upgrade to performance-grade mounts for better stability. Regular alignment and tire rotation will reduce stress on the drivetrain. Consider a custom tune for the transmission to improve shift response.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1990-1996 Infiniti Q45 Service Manual
Coming SoonComprehensive guide covering all aspects of the drivetrain, including maintenance, repair, and troubleshooting procedures.
Infiniti Q45 Technical Service Bulletin (TSB) - Drivetrain Issues
Coming SoonOfficial service bulletin addressing common drivetrain problems and recommended solutions for the 1990-1996 Infiniti Q45.
Infiniti Q45 Drivetrain Parts Catalog
Coming SoonDetailed catalog listing all drivetrain components, including part numbers, specifications, and compatibility information.
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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.
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