Buick Century 1982-1996 3.8L Engine Specifications
Explore the detailed 3.8L engine specifications for the 1982-1996 Buick Century. This guide covers engine performance, maintenance tips, and compatibility information, making it a must-read for mechanics and car enthusiasts.
Overview Specifications
This document provides detailed specifications and technical information about the 3.8L engine used in the 1982-1996 Buick Century. It is designed to assist enthusiasts, mechanics, and researchers in understanding the engine's design, performance, and maintenance requirements. The content is organized into major sections, each focusing on a specific aspect of the engine. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search functionality to locate specific terms or phrases within the document. Enter keywords related to the engine's components, performance metrics, or maintenance tips to find relevant sections quickly.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled, and subsections provide detailed information on specific topics related to the 3.8L engine.
Key Specifications
Displacement
3.8L
Horsepower
140-170 HP
Torque
200-220 lb-ft
Compression Ratio
8.5:1
Fuel System
Multi-port injection
Available Specifications
Engine Design
This section covers the fundamental design aspects of the 3.8L engine, including its architecture, materials, and manufacturing processes. It provides insights into how the engine was engineered for durability and performance in the Buick Century.
Engine Design
This section covers the fundamental design aspects of the 3.8L engine, including its architecture, materials, and manufacturing processes. It provides insights into how the engine was engineered for durability and performance in the Buick Century.
Architecture
- V6 configuration
- Overhead valve (OHV) design
- Cast iron engine block
- Aluminum cylinder heads
- Sequential fuel injection system
- Hydraulic lifters
Materials
- High-strength cast iron for the block
- Aluminum alloy for the heads
- Forged steel crankshaft
- Powdered metal connecting rods
- Nodular iron camshaft
- Stainless steel exhaust valves
Performance Metrics
This section details the performance characteristics of the 3.8L engine, including horsepower, torque, fuel efficiency, and acceleration. It provides a comprehensive overview of the engine's capabilities in the Buick Century.
Performance Metrics
This section details the performance characteristics of the 3.8L engine, including horsepower, torque, fuel efficiency, and acceleration. It provides a comprehensive overview of the engine's capabilities in the Buick Century.
Power Output
- 140-170 horsepower (depending on model year)
- 200-220 lb-ft of torque
- Peak torque at 2000-2400 RPM
- Electronic spark control for optimized performance
- Multi-port fuel injection for efficient combustion
- Compression ratio of 8.5:1
Fuel Efficiency
- Average fuel economy of 18-22 MPG (city)
- Average fuel economy of 25-28 MPG (highway)
- Electronic fuel injection system
- Air-to-fuel ratio optimization
- Emission control system compliance
- Lightweight components for improved efficiency
Maintenance and Durability
This section focuses on the maintenance requirements and durability features of the 3.8L engine. It includes recommended service intervals, common issues, and tips for ensuring long-term reliability.
Maintenance and Durability
This section focuses on the maintenance requirements and durability features of the 3.8L engine. It includes recommended service intervals, common issues, and tips for ensuring long-term reliability.
Service Intervals
- Oil change every 3,000-5,000 miles
- Spark plug replacement every 30,000 miles
- Timing belt inspection every 60,000 miles
- Coolant flush every 50,000 miles
- Air filter replacement every 15,000 miles
- Fuel filter replacement every 30,000 miles
Common Issues
- Intake manifold gasket leaks
- Cracked cylinder heads in early models
- Ignition module failures
- Throttle body carbon buildup
- Cooling system inefficiencies
- Oil sludge formation
Search Specifications
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Engine Specifications
Overview
- Type
- V6
- Configuration
- Naturally Aspirated
- Platform
- Buick Century
- Material
- Cast Iron Block
- Location
- Front Longitudinal
Dimensions
- Length
- 28.7 inches (729 mm)
- Width
- 26.4 inches (671 mm)
- Height
- 27.6 inches (701 mm)
- Weight
- 400 lbs (181 kg)
- Displacement
- 231 cubic inches (3.8 liters)
- Bore
- 3.8 inches (96.5 mm)
- Stroke
- 3.4 inches (86.4 mm)
- Oil Capacity
- 4.5 quarts (4.3 liters)
Materials
- Block
- Cast Iron
- Cylinder Head
- Aluminum
- Pistons
- Aluminum Alloy
- Crankshaft
- Forged Steel
- Valves
- Stainless Steel
Features
- Fuel System
-
- Multi-Port Fuel Injection
- Electronic Fuel Control
- High-Pressure Fuel Pump
- Ignition System
-
- Distributorless Ignition
- Electronic Spark Control
- High-Energy Ignition Coils
- Cooling System
-
- Radiator with Electric Fan
- Thermostatic Control
- Coolant Recovery System
- Exhaust System
-
- Dual Exhaust
- Catalytic Converter
- Stainless Steel Muffler
- Engine Management
-
- Onboard Diagnostics (OBD-I)
- Electronic Control Module (ECM)
- Sensors for Air/Fuel Ratio
Safety Features
- Engine Shutdown
-
- Overheat Protection
- Low Oil Pressure Shutdown
- Emissions Control
-
- Catalytic Converter
- Exhaust Gas Recirculation (EGR)
- Positive Crankcase Ventilation (PCV)
- Fire Prevention
-
- Heat Shields
- Fuel Cutoff Switch
Comfort Features
- Noise Reduction
-
- Acoustic Engine Covers
- Balanced Shafts
- Hydraulic Engine Mounts
- Vibration Reduction
-
- Counterbalanced Crankshaft
- Rubber Isolated Components
- Climate Control
-
- Heater Core Integration
- AC Compressor Drive
Accessories
- Belts And Pulleys
-
- Serpentine Belt
- Tensioner Pulley
- Idler Pulley
- Filters
-
- Oil Filter
- Air Filter
- Fuel Filter
- Sensors
-
- Oxygen Sensor
- Coolant Temperature Sensor
- Knock Sensor
Maintenance
- Service interval
- Every 3,000 miles or 3 months
- Service Items
-
- Oil Change
- Filter Replacement
- Spark Plug Inspection
- Belt Tension Check
- Coolant Level Check
- Maintenance Notes
- Use only recommended fluids and parts for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper to Bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Engine and Transmission
- Corrosion
- Miles: 100,000Years: 7Coverage: Rust Perforation
- Emissions
- Miles: 50,000Years: 2Coverage: Catalytic Converter and Sensors
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% Engine TestingTolerances: Micrometer Precision
- Sustainability Practices
-
- Recycled Materials
- Emission Controls
- Energy-Efficient Manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.5%
Service Information for 3.8l engine Service
Maintenance and service requirements specific to this component
- Oil and Filter Change
- Inspect Belts and Hoses
- Check Fluid Levels
- Inspect Spark Plugs
- Check Battery Condition
Use only manufacturer-recommended oil and filters.
- Replace Air Filter
- Replace Fuel Filter
- Inspect Ignition System
- Check Exhaust System
- Test Emissions
Ensure all replaced parts meet OEM specifications.
- Replace Timing Belt
- Replace Water Pump
- Inspect and Replace Gaskets
- Check and Adjust Valve Clearance
- Perform Compression Test
Major service intervals may require specialized tools and expertise.
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.8L engine in the 1982-1996 Buick Century?
What are the technical specifications of the 3.8L engine in the 1982-1996 Buick Century?
The 3.8L engine in the 1982-1996 Buick Century is a V6 engine with a displacement of 231 cubic inches. It produces approximately 110-140 horsepower and 150-180 lb-ft of torque, depending on the model year and configuration. The engine features a cast iron block and aluminum cylinder heads, with a fuel injection system introduced in later models. It is compatible with both RWD and AWD configurations and requires regular unleaded gasoline.
Q2 What are the recommended maintenance requirements for the 3.8L engine?
What are the recommended maintenance requirements for the 3.8L engine?
Regular maintenance for the 3.8L engine includes oil changes every 5,000-7,500 miles using 5W-30 synthetic oil. The coolant should be replaced every 50,000 miles, and the timing belt should be inspected and replaced at 90,000 miles. Spark plugs should be replaced every 30,000 miles, and the air filter should be changed every 15,000 miles. Additionally, the PCV valve and fuel filter should be inspected and replaced as needed.
Q3 How do I install or replace parts on the 3.8L engine?
How do I install or replace parts on the 3.8L engine?
When installing or replacing parts on the 3.8L engine, ensure the vehicle is on level ground and the engine is cool. Disconnect the battery before starting any work. For major repairs, consult a service manual for specific torque specifications and procedures. Use proper tools and follow safety guidelines to avoid injury or damage. Reassemble components in the reverse order of disassembly and test the system thoroughly after completion.
Q4 What are common issues and how do I troubleshoot them?
What are common issues and how do I troubleshoot them?
Common issues with the 3.8L engine include oil leaks from the valve cover gasket, coolant leaks from the intake manifold, and excessive engine noise. To troubleshoot, start by visually inspecting the suspected area. Use diagnostic tools to check for fault codes if the issue is related to the engine management system. Consult a repair manual for specific repair procedures and ensure all repairs are done in a well-ventilated area with proper safety equipment.
Q5 How can I optimize the performance of the 3.8L engine?
How can I optimize the performance of the 3.8L engine?
To optimize performance, ensure the engine is well-maintained with regular tune-ups and proper fluid levels. Install a high-performance air filter and exhaust system for improved airflow. Consider upgrading the ignition system with high-performance spark plugs and wires. Additionally, tuning the engine management system with a performance-oriented calibration can yield better power and efficiency. Always follow manufacturer recommendations and local emissions regulations.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1982-1996 Buick Century Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting procedures for the 3.8L engine.
Technical Service Bulletin - 3.8L Engine Oil Leak Repair
Coming SoonOfficial bulletin addressing common oil leak issues and repair procedures for the 3.8L engine.
Buick Century Parts and Accessories Catalog
Coming SoonDetailed catalog of compatible parts and accessories for the 3.8L engine and related systems.
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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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