Lexus SC 1991-2000 Drivetrain Specifications
Explore the detailed drivetrain specifications for the 1991-2000 Lexus SC, including transmission, differential, and driveline configurations. Ideal for maintenance, repairs, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 1991-2000 Lexus SC. It is designed to assist enthusiasts, mechanics, and researchers in understanding the key components and performance characteristics of the vehicle's drivetrain. Use the search and navigation instructions to quickly locate specific details or explore the sections for comprehensive insights.
How to Use
Use the search functionality to find specific terms or components within the document. Enter keywords like 'transmission' or 'differential' to quickly locate relevant information.
Navigate through the document using the section titles and subsections. Each section is organized by major drivetrain components, with detailed points listed under each subsection for easy reference.
Key Specifications
Engine Power (SC 300)
225 hp
Engine Power (SC 400)
260 hp
Transmission Options
5-speed manual, 4-speed auto
Final Drive Ratio (SC 300)
3.27:1
0-60 mph (SC 400)
6.9 seconds
Available Specifications
Engine and Transmission
This section covers the engine configurations and transmission systems used in the 1991-2000 Lexus SC. It includes details on engine types, power output, and transmission options, as well as their impact on performance.
Engine and Transmission
This section covers the engine configurations and transmission systems used in the 1991-2000 Lexus SC. It includes details on engine types, power output, and transmission options, as well as their impact on performance.
Engine Specifications
- 3.0L 2JZ-GE inline-6 engine (SC 300)
- 4.0L 1UZ-FE V8 engine (SC 400)
- 225 hp @ 6,000 rpm (SC 300)
- 260 hp @ 5,400 rpm (SC 400)
- 210 lb-ft of torque @ 4,800 rpm (SC 300)
- 270 lb-ft of torque @ 4,500 rpm (SC 400)
Transmission Options
- 5-speed manual transmission (SC 300)
- 4-speed automatic transmission (SC 300 and SC 400)
- Rear-wheel drive configuration
- Smooth and responsive shifting
- Optional overdrive for improved fuel efficiency
Differential and Axles
This section provides information on the differential and axle systems, including their design, functionality, and role in delivering power to the wheels.
Differential and Axles
This section provides information on the differential and axle systems, including their design, functionality, and role in delivering power to the wheels.
Differential Specifications
- Open differential (standard)
- Optional limited-slip differential (LSD)
- 3.27:1 final drive ratio (SC 300)
- 3.07:1 final drive ratio (SC 400)
- Durable construction for long-term reliability
Axle Design
- Independent rear suspension
- Semi-trailing arm design
- Robust axle shafts for power delivery
- Sealed bearings for reduced maintenance
- Optimized for smooth handling and stability
Drivetrain Performance
This section explores the performance characteristics of the Lexus SC's drivetrain, including acceleration, handling, and fuel efficiency.
Drivetrain Performance
This section explores the performance characteristics of the Lexus SC's drivetrain, including acceleration, handling, and fuel efficiency.
Acceleration and Power Delivery
- 0-60 mph in 6.9 seconds (SC 400)
- 0-60 mph in 7.5 seconds (SC 300)
- Linear power delivery for smooth acceleration
- Responsive throttle response
- Balanced weight distribution for improved handling
Fuel Efficiency
- 18 mpg city / 23 mpg highway (SC 300)
- 17 mpg city / 22 mpg highway (SC 400)
- Efficient engine management system
- Overdrive for reduced engine RPM at high speeds
- Lightweight drivetrain components for better efficiency
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Component Specifications
Overview
- Type
- Rear-wheel drive (RWD)
- Configuration
- Longitudinal engine layout
- Platform
- Toyota Z30 platform
- Material
- High-strength steel and aluminum
- Location
- Underbody, rear axle
Dimensions
- Driveshaft Length
- 72.5 inches (1841.5 mm)
- Rear Axle Width
- 60.2 inches (1529 mm)
- Differential Gear Ratio
- 3.27:1
- Transmission Length
- 28.3 inches (719 mm)
- Propeller Shaft Diameter
- 3.15 inches (80 mm)
- Rear Axle Tube Diameter
- 3.54 inches (90 mm)
- Differential Case Width
- 12.6 inches (320 mm)
Materials
- Driveshaft
- High-strength steel with carbon fiber reinforcement
- Differential Housing
- Cast aluminum alloy
- Axle Shafts
- Forged steel
- Transmission Case
- Aluminum alloy
- Gear Set
- Case-hardened steel
Features
- Transmission
-
- 4-speed automatic with overdrive
- Electronic shift control
- Lock-up torque converter
- Manual shift mode
- Differential
-
- Limited-slip differential (optional)
- Sealed gear housing
- High-capacity cooling fins
- Precision-machined gears
- Driveshaft
-
- Balanced for high-speed operation
- Rubber vibration dampers
- Universal joints with grease fittings
- Corrosion-resistant coating
- Axles
-
- Semi-floating rear axle
- Spline-mounted axle shafts
- Sealed wheel bearings
- High-torque capacity
- Suspension integration
-
- Independent rear suspension
- Multi-link rear setup
- Stabilizer bar integration
- Adjustable camber settings
Safety Features
- Structural integrity
-
- Reinforced differential mounts
- Crash-resistant driveshaft tunnel
- Stability
-
- Traction control system (optional)
- Electronic stability control (ESC)
- Overload Protection
-
- Shear-pin driveshaft safety
- Differential temperature sensor
Comfort Features
- Noise Reduction
-
- Insulated transmission tunnel
- Differential noise dampening
- Balanced driveshaft
- Vibration Control
-
- Rubber-mounted differential
- Vibration-dampening bushings
- Harmonic balancer
- Smooth Operation
-
- Precision gear meshing
- Hydraulic clutch engagement
- Electronic throttle control
Accessories
- Performance Upgrades
-
- Limited-slip differential kit
- High-performance gear oil
- Upgraded driveshaft
- Maintenance Tools
-
- Differential fluid pump
- Driveshaft alignment tool
- Transmission fluid tester
- Diagnostic Equipment
-
- OBD-II scanner
- Differential temperature gauge
- Transmission pressure tester
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Transmission fluid change
- Differential oil replacement
- Driveshaft inspection
- U-joint lubrication
- Axle seal check
- Maintenance Notes
- Use only manufacturer-recommended fluids and lubricants.
Warranty
- Basic Warranty
- Miles: 50,000Years: 4Coverage: Bumper-to-bumper
- Powertrain Warranty
- Miles: 70,000Years: 6Coverage: Drivetrain components
- Corrosion Warranty
- Miles: UnlimitedYears: 5Coverage: Rust perforation
- Emissions Warranty
- Miles: 80,000Years: 8Coverage: Emission-related components
Production Details
- Manufacturer
- Toyota Motor Corporation
- Manufacturing Process
-
- Precision CNC machining
- Heat treatment of gears
- Robotic assembly
- Laser alignment
- Quality Control
- inspection Stages: Dimensional accuracy, Gear meshing test, Balancing test, Durability testingTesting Facilities: Toyota Technical Center
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 120Defect Rate: 0.02%Energy Efficiency: 85%
Service Information for drivetrain Service
Maintenance and service requirements specific to this component
- Inspect driveshaft for wear
- Check differential fluid level
- Lubricate U-joints
- Inspect axle seals
- Test transmission fluid condition
Ensure proper torque on all fasteners during reassembly.
- Replace differential fluid
- Flush transmission fluid
- Inspect driveshaft balance
- Check differential mounting bolts
- Test transmission shift quality
Use only manufacturer-approved fluids for replacement.
- Replace transmission filter
- Inspect and adjust gear mesh
- Check differential backlash
- Replace driveshaft U-joints if necessary
- Perform full drivetrain alignment
Major service requires specialized tools and equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the drivetrain specifications for the 1991-2000 Lexus SC?
What are the drivetrain specifications for the 1991-2000 Lexus SC?
The 1991-2000 Lexus SC models feature a rear-wheel-drive (RWD) system. The SC 300 is equipped with a 3.0L inline-6 engine (2JZ-GE), while the SC 400 has a 4.0L V8 engine (1UZ-FE). Both engines are paired with either a 4-speed automatic or 5-speed manual transmission (SC 300 only). The drivetrain is designed for smooth performance and durability, with a focus on luxury and reliability.
Q2 What maintenance is required for the Lexus SC drivetrain?
What maintenance is required for the Lexus SC drivetrain?
Regular maintenance for the Lexus SC drivetrain includes checking and replacing transmission fluid every 60,000-100,000 miles, inspecting the driveshaft and differential for wear, and ensuring proper lubrication of U-joints. Additionally, monitor the clutch system (if manual) and replace it as needed. Routine inspections of the suspension and alignment are also recommended to maintain optimal drivetrain performance.
Q3 How do I replace the driveshaft on a 1991-2000 Lexus SC?
How do I replace the driveshaft on a 1991-2000 Lexus SC?
To replace the driveshaft, first, secure the vehicle on a lift or jack stands. Remove the exhaust system and heat shields for access. Unbolt the driveshaft from the differential and transmission. Mark the driveshaft orientation for proper reinstallation. Install the new driveshaft, ensuring all bolts are torqued to factory specifications. Reassemble the exhaust system and test drive to confirm proper operation.
Q4 What are common drivetrain issues in the Lexus SC?
What are common drivetrain issues in the Lexus SC?
Common drivetrain issues include worn U-joints, differential leaks, and transmission fluid degradation. Symptoms may include vibrations, unusual noises, or difficulty shifting. Inspect the driveshaft, differential, and transmission for wear or leaks. Replace worn components and ensure proper fluid levels. Regular maintenance can prevent many of these issues.
Q5 How can I optimize the performance of my Lexus SC drivetrain?
How can I optimize the performance of my Lexus SC drivetrain?
To optimize drivetrain performance, use high-quality synthetic transmission and differential fluids. Upgrade to performance clutch kits (for manual models) and consider lightweight driveshaft options. Ensure proper alignment and suspension tuning. Regularly inspect and maintain drivetrain components to prevent wear and improve longevity. These steps can enhance both performance and reliability.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Lexus SC Factory Service Manual
Coming SoonComprehensive guide covering all aspects of the Lexus SC drivetrain, including maintenance, repair, and troubleshooting procedures.
Technical Service Bulletin: Drivetrain Updates
Coming SoonOfficial updates and fixes for common drivetrain issues in the 1991-2000 Lexus SC models.
Lexus SC Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the Lexus SC drivetrain, including compatibility information.
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Technical Information
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