Lexus SC 2002-2010 4.3L V8 Engine Specifications
Explore detailed technical specifications for the 4.3L V8 engine in the 2002-2010 Lexus SC. Learn about horsepower, torque, fuel system, and more for maintenance, repair, or upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the 4.3L V8 engine used in the 2002-2010 Lexus SC. It is designed for enthusiasts, mechanics, and anyone seeking in-depth knowledge about this engine. The content is organized into sections covering performance, design, maintenance, and key specifications. Use the search and navigation instructions to quickly find relevant information.
How to Use
Use the search bar to enter keywords related to the 4.3L V8 engine, such as 'horsepower' or 'torque'. Results will highlight relevant sections and subsections for easy access.
Scroll through the sections or use the table of contents to jump to specific topics. Each section is divided into subsections with detailed technical points for quick reference.
Key Specifications
Horsepower
288 hp
Torque
317 lb-ft
Displacement
4.3L
Compression Ratio
10.5:1
Fuel Efficiency
18 MPG combined
Available Specifications
Performance Specifications
This section covers the performance metrics of the 4.3L V8 engine, including horsepower, torque, and acceleration. It also includes details about fuel efficiency and emissions standards for the 2002-2010 Lexus SC.
Performance Specifications
This section covers the performance metrics of the 4.3L V8 engine, including horsepower, torque, and acceleration. It also includes details about fuel efficiency and emissions standards for the 2002-2010 Lexus SC.
Power Output
- Horsepower: 288 hp @ 5,600 rpm
- Torque: 317 lb-ft @ 3,400 rpm
- Redline: 6,200 rpm
- 0-60 mph: 5.9 seconds
- Top speed: Electronically limited to 149 mph
Fuel Efficiency
- City MPG: 16
- Highway MPG: 22
- Combined MPG: 18
- Fuel type: Premium unleaded
- Fuel tank capacity: 19.8 gallons
Engine Design
This section delves into the engineering and design features of the 4.3L V8 engine, including its construction, materials, and advanced technologies.
Engine Design
This section delves into the engineering and design features of the 4.3L V8 engine, including its construction, materials, and advanced technologies.
Construction
- Engine type: Naturally aspirated V8
- Displacement: 4.3 liters (4,293 cc)
- Bore x Stroke: 91.0 mm x 82.5 mm
- Compression ratio: 10.5:1
- Block material: Aluminum
- Head material: Aluminum
Advanced Technologies
- Dual overhead camshafts (DOHC)
- Variable Valve Timing with intelligence (VVT-i)
- Sequential multi-port fuel injection
- Electronic throttle control
- Low-friction piston rings
Maintenance and Durability
This section provides information on maintenance schedules, common issues, and the durability of the 4.3L V8 engine. It also includes tips for ensuring long-term reliability.
Maintenance and Durability
This section provides information on maintenance schedules, common issues, and the durability of the 4.3L V8 engine. It also includes tips for ensuring long-term reliability.
Maintenance Schedule
- Oil change interval: Every 5,000 miles
- Spark plug replacement: Every 60,000 miles
- Timing belt: Not applicable (chain-driven)
- Coolant flush: Every 100,000 miles
- Air filter replacement: Every 30,000 miles
Common Issues
- Carbon buildup on intake valves
- Occasional oil leaks from valve covers
- Throttle body cleaning required periodically
- Water pump failure after 100,000 miles
- Exhaust manifold cracks in high-mileage engines
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Engine Specifications
Overview
- Type
- Naturally aspirated V8
- Configuration
- 90-degree V8
- Displacement
- 4.3 liters (4293 cc)
- Material
- Aluminum block and heads
- Location
- Front longitudinal
- Valvetrain
- DOHC, 4 valves per cylinder
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 27.2 inches (691 mm)
- Height
- 26.8 inches (681 mm)
- Weight
- 440 lbs (200 kg)
- Bore
- 3.70 inches (94 mm)
- Stroke
- 3.27 inches (83 mm)
- Compression Ratio
- 10.5:1
- Oil Capacity
- 7.9 quarts (7.5 liters)
Materials
- Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Titanium intake, steel exhaust
Features
- Performance
-
- Variable Valve Timing with intelligence (VVT-i)
- Electronic throttle control
- High-flow intake manifold
- Dual exhaust system
- Fuel System
-
- Sequential multi-port fuel injection
- Electronic fuel pressure regulator
- High-pressure fuel pump
- Cooling
-
- High-capacity radiator
- Dual electric cooling fans
- Thermostatically controlled oil cooler
- Ignition
-
- Direct ignition system
- Iridium-tipped spark plugs
- Coil-on-plug design
- Emissions
-
- Dual catalytic converters
- Exhaust gas recirculation (EGR)
- Oxygen sensors
Safety Features
- Engine Protection
-
- Knock sensor system
- Low oil pressure warning
- Overheat protection
- Electronic Controls
-
- Traction control integration
- Stability control integration
- Engine immobilizer system
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Tuned intake silencer
- Vibration Control
-
- Balanced crankshaft
- Dual-mass flywheel
- Hydraulic lash adjusters
Accessories
- Belts
-
- Serpentine belt
- Timing belt
- Accessory drive belt
- Filters
-
- High-efficiency air filter
- Oil filter
- Fuel filter
- Sensors
-
- Crankshaft position sensor
- Camshaft position sensor
- Knock sensor
Maintenance
- Service interval
- Every 5,000 miles or 6 months
- Service Items
-
- Oil and filter change
- Spark plug inspection
- Timing belt inspection
- Coolant level check
- Air filter replacement
- Maintenance Notes
- Use synthetic 5W-30 oil for optimal performance
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Bumper-to-bumper
- Powertrain
- Miles: 70,000Years: 6Coverage: Engine and transmission
- Emissions
- Miles: 80,000Years: 8Coverage: Catalytic converter and sensors
- Corrosion
- Miles: UnlimitedYears: 6Coverage: Perforation from corrosion
Production Details
- Manufacturer
- Toyota Motor Corporation
- Manufacturing Process
-
- Precision casting
- CNC machining
- Automated assembly
- Quality Control
- Testing: Cold start testing, Dyno testing, Leak testingTolerances: ±0.0001 inch
- Sustainability
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 150Defect Rate: 0.01%Energy Usage: 15 kWh per engine
Service Information for 4.3l v8 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Tire rotation
- Fluid level checks
- Brake inspection
- Air filter inspection
Use only manufacturer-recommended fluids and filters
- Replace spark plugs
- Inspect timing belt
- Replace cabin air filter
- Check valve clearance
- Inspect fuel system
Requires special tools for valve adjustment
- Replace timing belt
- Replace water pump
- Flush cooling system
- Replace drive belts
- Inspect engine mounts
Critical to prevent engine damage if timing belt fails
Common Questions
Find answers to common questions about torque specifications
Q1 What vehicles is the 4.3L V8 engine compatible with?
What vehicles is the 4.3L V8 engine compatible with?
The 4.3L V8 engine, specifically the 3UZ-FE, was used in the 2002-2010 Lexus SC 430. It is not directly compatible with other models without significant modifications. This engine features aluminum alloy construction, DOHC, and VVT-i, delivering 288-300 hp and 317-325 lb-ft of torque. Always verify compatibility with your vehicle's ECU, transmission, and mounting points before considering a swap.
Q2 What are the maintenance requirements for the 4.3L V8 engine?
What are the maintenance requirements for the 4.3L V8 engine?
The 4.3L V8 engine requires regular maintenance to ensure longevity. Change the oil and filter every 5,000-7,500 miles using synthetic 5W-30 oil. Inspect and replace spark plugs every 60,000 miles. Check the timing belt every 90,000 miles and replace it if necessary. Regularly inspect coolant, hoses, and belts for wear. Adhere to the Lexus-recommended service schedule for optimal performance.
Q3 How do I replace the timing belt on the 4.3L V8 engine?
How do I replace the timing belt on the 4.3L V8 engine?
Replacing the timing belt on the 4.3L V8 engine involves several steps: 1) Disconnect the battery and remove engine covers. 2) Remove the serpentine belt and crankshaft pulley. 3) Align timing marks on the crankshaft and camshafts. 4) Remove the timing belt cover and old belt. 5) Install the new belt, ensuring proper alignment. 6) Reassemble components and test the engine. Refer to the service manual for detailed torque specifications and diagrams.
Q4 What should I do if the engine is misfiring?
What should I do if the engine is misfiring?
If the 4.3L V8 engine is misfiring, start by diagnosing the issue: 1) Check for error codes using an OBD-II scanner. 2) Inspect spark plugs, ignition coils, and wires for damage. 3) Test fuel injectors and fuel pressure. 4) Verify the condition of the air filter and MAF sensor. 5) Check for vacuum leaks. Replace faulty components and clear error codes. If the issue persists, consult a professional mechanic.
Q5 How can I optimize the performance of the 4.3L V8 engine?
How can I optimize the performance of the 4.3L V8 engine?
To optimize the 4.3L V8 engine's performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Install a performance ECU tune to enhance power and throttle response. Regularly clean the throttle body and MAF sensor. Ensure proper tire pressure and alignment for improved handling. Avoid excessive idling and maintain a consistent maintenance schedule.
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 430 Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the 2002-2010 Lexus SC 430, including the 4.3L V8 engine.
Technical Service Bulletin: Engine Performance Update
Coming SoonDetails updates and fixes for common engine performance issues in the 4.3L V8 engine, including ECU recalibrations and sensor adjustments.
Lexus SC 430 Parts Catalog
Coming SoonComplete catalog of OEM and aftermarket parts for the 2002-2010 Lexus SC 430, including engine components, accessories, and replacement parts.
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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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