🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1978 Generation Generation Designation: First Generation (SA22C chassis code for the coupe, though RX-3 name persisted for this model year in some markets) Codes Chassis Code: SA22C 👋 Introduction Market Position Positioning: The Mazda RX-3 in 1978 was a sporty compact car, a significant model for Mazda's global expansion and particularly known for its rotary engine technology. Competitive Analysis Competitors: Competed with other sporty Japanese and American compacts of the era, such as Datsun (Nissan) Z-cars, Toyota Celica, and American pony cars. Key Features Rotary Engine: Its primary distinguishing feature was the unique Mazda Wankel rotary engine, offering a smooth power delivery and compact size. Manual Utility: Provides the exact same information used by dealership technicians, ensuring accurate and comprehensive repair procedures. 📋 Manual Details Coverage Areas All Models Covered: Yes, covers all RX-3 models and configurations for the 1978 model year. Repair Scope: All repairs A-Z, vehicle specific. Page Count Estimated Page Count: Likely extensive, comparable to dealership service manuals of the era (typically 500+ pages). Manual Type Type: Factory Service and Repair Manual Language Language: English Format Format: Digital PDF 📖 Manual Coverage Systems Covered Engine: Rotary engine (12A) specific maintenance, diagnosis, and repair. Control System: Engine control, ignition system, fuel delivery system. Mechanical: Comprehensive mechanical systems including chassis, drivetrain, and engine components. Fuel System: Fuel tank, fuel pump, carburetor (likely Hitachi or Mikuni), fuel lines, and fuel filter service. Emission Control: Detailed information on emission control systems specific to the 1978 model year, including any relevant Japanese or US market regulations. Intake Exhaust Cooling: Intake manifold, exhaust manifold, catalytic converter (if applicable), radiator, cooling fan, water pump, and thermostat service. Lube System: Engine oil and filter changes, oil pump, and lubrication passages. Ignition Charging Starting: Spark plugs, ignition coils, distributor, points (if applicable) or electronic ignition, alternator, starter motor, and battery service. Transmission: Both manual and automatic transmission service, clutch operation, and drivetrain components. Suspension Steering: Front and rear suspension, steering box, power steering system (if equipped), and wheel alignment specifications. Brakes: Front disc brakes, rear drum brakes, brake fluid specifications, hydraulic system, parking brake operation, and power brake booster. Electrical: Complete wiring schematics, fuse box layout, lighting systems, instrument cluster, and accessory electrical components. Body Exterior Interior: Door mechanisms, glass replacement, seat adjustments, interior trim, and exterior body panel service. Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, and general tune-up procedures. Diagnosis: Step-by-step diagnostic procedures for identifying and resolving common and uncommon issues across all vehicle systems. Repair: Detailed instructions for the disassembly, repair, and reassembly of all major vehicle components. Troubleshooting: Troubleshooting guides and flowcharts for electrical and mechanical problems. Specifications: Comprehensive technical specifications for all components, including torque values, clearances, and fluid capacities. Technical Depth Depth: Dealership level, covering everything from basic maintenance to complex overhauls and diagnostics. Detail Level: Factory highly detailed, with step-by-step instructions and illustrations. 📊 Manual Specifications File Format Format: PDF Searchability: Likely searchable text within the PDF for quick information retrieval. Print Quality Printability: All pages are printable for use in the workshop or garage. Image Enlargement: Images and diagrams can be blown up and printed in enlarged copies. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Mazda Wankel Rotary Engine Code: 12A Displacement: Approx. 1.15L (rotor displacement), often referred to as 1.3L by convention. Performance Horsepower: Typically in the range of 100-110 HP (varies by market and emissions equipment). Torque: Around 110-120 lb-ft (varies by market and emissions equipment). Fuel System Carburetion: Single or dual-barrel carburetor (e.g., Hitachi or Mikuni). Fuel Type: Unleaded gasoline (as required by emissions standards of the era). 🔧 Transmission Standard Type: 4-speed manual transmission (common). Optional Type: 3-speed automatic transmission (available on some models). Features Clutch: Dry single-plate clutch for manual transmission models. 📐 Dimensions Exterior Body Styles: Coupe, Sedan, and sometimes a Station Wagon variant (though less common under RX-3 badging globally for this specific year, may be branded Savanna). Weights Curb Weight: Approximately 2,200 - 2,400 lbs (1000 - 1100 kg) depending on body style and equipment. 🛡️ Safety Features Ratings Crash Test Data: Limited formal crash test data publicly available for this era and model, but early Japanese safety standards were in place. Active Features Brakes: Front disc brakes, rear drum brakes. Power assist may be optional or standard depending on trim. Passive Features Seatbelts: Standard lap and shoulder belts (three-point front, lap rear). 💡 Technology Features Infotainment Audio System: Typically a factory AM/FM radio, possibly with an 8-track player or cassette option depending on trim and market. Driver Assistance Features: Basic driver assistance features typical of the late 1970s, such as power steering (optional) and power brakes (optional). Connectivity Features: No modern connectivity features...
First Generation (SA22C chassis code for the coupe, though RX-3 name persisted for this model year in some markets)
Codes
Chassis Code:
SA22C
👋 Introduction
Market Position
Positioning:
The Mazda RX-3 in 1978 was a sporty compact car, a significant model for Mazda's global expansion and particularly known for its rotary engine technology.
Competitive Analysis
Competitors:
Competed with other sporty Japanese and American compacts of the era, such as Datsun (Nissan) Z-cars, Toyota Celica, and American pony cars.
Key Features
Rotary Engine:
Its primary distinguishing feature was the unique Mazda Wankel rotary engine, offering a smooth power delivery and compact size.
Manual Utility:
Provides the exact same information used by dealership technicians, ensuring accurate and comprehensive repair procedures.
📋 Manual Details
Coverage Areas
All Models Covered:
Yes, covers all RX-3 models and configurations for the 1978 model year.
Repair Scope:
All repairs A-Z, vehicle specific.
Page Count
Estimated Page Count:
Likely extensive, comparable to dealership service manuals of the era (typically 500+ pages).
Manual Type
Type:
Factory Service and Repair Manual
Language
Language:
English
Format
Format:
Digital PDF
📖 Manual Coverage
Systems Covered
Engine:
Rotary engine (12A) specific maintenance, diagnosis, and repair.
Door mechanisms, glass replacement, seat adjustments, interior trim, and exterior body panel service.
Procedures Included
Maintenance:
Scheduled maintenance, fluid checks and changes, filter replacements, and general tune-up procedures.
Diagnosis:
Step-by-step diagnostic procedures for identifying and resolving common and uncommon issues across all vehicle systems.
Repair:
Detailed instructions for the disassembly, repair, and reassembly of all major vehicle components.
Troubleshooting:
Troubleshooting guides and flowcharts for electrical and mechanical problems.
Specifications:
Comprehensive technical specifications for all components, including torque values, clearances, and fluid capacities.
Technical Depth
Depth:
Dealership level, covering everything from basic maintenance to complex overhauls and diagnostics.
Detail Level:
Factory highly detailed, with step-by-step instructions and illustrations.
📊 Manual Specifications
File Format
Format:
PDF
Searchability:
Likely searchable text within the PDF for quick information retrieval.
Print Quality
Printability:
All pages are printable for use in the workshop or garage.
Image Enlargement:
Images and diagrams can be blown up and printed in enlarged copies.
Binding Type
Binding:
N/A (Digital PDF)
Paper Type
Paper Type:
N/A (Digital PDF)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Mazda Wankel Rotary
Engine Code:
12A
Displacement:
Approx. 1.15L (rotor displacement), often referred to as 1.3L by convention.
Performance
Horsepower:
Typically in the range of 100-110 HP (varies by market and emissions equipment).
Torque:
Around 110-120 lb-ft (varies by market and emissions equipment).
Fuel System
Carburetion:
Single or dual-barrel carburetor (e.g., Hitachi or Mikuni).
Fuel Type:
Unleaded gasoline (as required by emissions standards of the era).
🔧 Transmission
Standard
Type:
4-speed manual transmission (common).
Optional
Type:
3-speed automatic transmission (available on some models).
Features
Clutch:
Dry single-plate clutch for manual transmission models.
📐 Dimensions
Exterior
Body Styles:
Coupe, Sedan, and sometimes a Station Wagon variant (though less common under RX-3 badging globally for this specific year, may be branded Savanna).
Weights
Curb Weight:
Approximately 2,200 - 2,400 lbs (1000 - 1100 kg) depending on body style and equipment.
🛡️ Safety Features
Ratings
Crash Test Data:
Limited formal crash test data publicly available for this era and model, but early Japanese safety standards were in place.
Active Features
Brakes:
Front disc brakes, rear drum brakes. Power assist may be optional or standard depending on trim.
Passive Features
Seatbelts:
Standard lap and shoulder belts (three-point front, lap rear).
💡 Technology Features
Infotainment
Audio System:
Typically a factory AM/FM radio, possibly with an 8-track player or cassette option depending on trim and market.
Driver Assistance
Features:
Basic driver assistance features typical of the late 1970s, such as power steering (optional) and power brakes (optional).
Connectivity
Features:
No modern connectivity features (e.g., Bluetooth, USB).
🔧 Maintenance
Service Intervals
Oil Change:
Typically every 3,000 miles (5,000 km) or 3 months. Consult manual for exact recommendation.
Tune Up:
Periodic tune-ups involving spark plug replacement, ignition timing adjustment, and carburetor adjustment are critical for rotary engines.
Fluid Specifications
Engine Oil:
API SE or SF service category, SAE 10W-30 or 10W-40 viscosity (check manual for specific details).
Coolant:
50/50 mixture of ethylene glycol-based antifreeze and distilled water.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Known Issues
Apex Seals:
Wear of apex seals is a common concern in rotary engines, leading to compression loss. Proper maintenance and avoidance of over-revving are key.
Carburetor Issues:
Carburetors can be sensitive to dirt and require precise adjustment for optimal rotary engine performance.
Oil Consumption:
Rotary engines naturally consume a small amount of oil to lubricate apex seals; however, excessive consumption indicates a problem.
📚 Vehicle History
Brand Heritage
Mazda Rotary:
The RX-3 was a key model in Mazda's pioneering of the Wankel rotary engine in mass-produced vehicles, following the success of the RX-2.
Model Evolution
Transition To Savanna:
In some markets, the RX-3 name was phased out for this generation, with the chassis (SA22C) becoming the basis for the second-generation Mazda RX-7, but the RX-3 badging persisted for the 1978 model year in many regions.
The Mazda rotary engine itself received significant recognition for its innovative design and performance characteristics, making the RX-3 a notable vehicle in automotive history.
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