🏷️ Basic Information Identification Make: Mazda Model: RX-7 Model Code: SA22C (1st Generation) Year: 1978 👋 Introduction Market Position Initial Positioning: Mazda's groundbreaking sports car, establishing the brand's reputation for innovative engineering and performance. Competed with Datsun Z-cars and entry-level European sports cars. Competitive Analysis Competitors 1978: Datsun 280Z, Toyota Celica GT, Porsche 924 (later), Chevrolet Monza. Key Features Design Philosophy: Lightweight, compact, balanced chassis with a unique rotary powerplant, emphasizing driver engagement and handling. Target Audience: Enthusiast drivers seeking a distinct, affordable, and fun-to-drive sports coupe. 📋 Manual Details Coverage Areas Coverage Scope: All Models & All Repairs A-Z Page Count Estimated Page Count: 600-800 (typical for comprehensive factory service manuals) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Likely printed book format, original dealer issue. Digital PDF is a common aftermarket conversion. 📖 Manual Coverage Systems Covered Engine: 12A Rotary Engine (1.1L displacement equivalent), lubrication, cooling, fuel, ignition, emissions control systems. Transmission: 4-speed manual transmission, clutch system, driveline, rear axle assembly. Chassis: Suspension (front strut, rear multi-link), steering, brakes (front discs, rear drums), wheels, tires. Electrical: 12V electrical system, battery, charging system, starting system, lighting, gauges, infotainment (radio/cassette), wiring diagrams. Body: Body panels, doors, glass, interior trim, bumpers, weatherstripping, underbody. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, spark plug (apex seal) inspection/replacement, belt adjustments. Troubleshooting: Diagnostic procedures for engine performance, electrical faults, braking issues, and other common problems. Repair: Detailed step-by-step instructions for component removal, disassembly, inspection, repair, assembly, and reinstallation. Diagnostics: Fault finding charts, component testing procedures, and specifications for diagnosing issues. Technical Depth Depth: Comprehensive, covering from basic fluid checks and adjustments to complete engine and transmission overhauls, and detailed electrical system diagnostics. 📊 Manual Specifications File Format File Format: Original: Printed paper. Digital: PDF (Searchable, Printable) Print Quality Print Quality: Original: High-quality paper, clear diagrams. Digital: High-resolution scans, vector graphics for diagrams where available. Binding Type Binding Type: Original: Perfect bound or spiral bound. Digital: N/A Paper Type Paper Type: Original: Durable paper stock. Digital: N/A ⚙️ Engine Specifications Primary Engine Engine Type: Two-Rotor Wankel Rotary Engine Engine Code: 12A Displacement Cc: 1146 cc (equivalent to approx. 2.3L piston engine displacement for tax purposes) Rotor Housing Design: Reuleaux triangle rotor within an epitrochoid housing. Performance Horsepower Gross SAE: 100-110 hp (depending on emissions equipment and market) Torque Gross SAE: 112-116 lb-ft Fuel System Carburetion: One Hitachi downdraft 2-barrel carburetor (later models may have additional small carburetor for cold start assist). Fuel Type: Unleaded gasoline, Octane rating 91 or higher recommended. Ignition System Ignition Type: Distributor-based, single ignition coil. Emissions Control Systems: Air injection system (ASR - Air والسور Reduction), catalytic converter (California models). 🔧 Transmission Standard Transmission Type: 4-speed manual transmission Optional Transmission Type: 3-speed automatic transmission (less common) Features Clutch Type: Single dry plate clutch Gear Ratios Manual: Refer to manual for specific ratios, typically around 3.485:1 for 1st gear. Transmission Fluid Spec: GL-4 Gear Oil, SAE 75W-90 or 80W-90 📐 Dimensions Exterior Wheelbase: 95.7 inches (2430 mm) Length: 167.1 inches (4245 mm) Width: 65.4 inches (1660 mm) Height: 49.6 inches (1260 mm) Weights Curb Weight: 2450 - 2550 lbs (1111 - 1157 kg) Gvw: Approx. 3250 lbs 🛡️ Safety Features Ratings Crash Test Results: No modern crash test data available for this era. Designed to 1970s safety standards. Active Features Braking System: Front: Ventilated Disc Brakes; Rear: Drum Brakes. Dual circuit hydraulic system. Parking Brake: Mechanical, rear drum. Passive Features Seat Belts: Three-point retractable front seat belts. Steering Column: Collapsible steering column. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player (optional). Manual covers head unit removal, speaker replacement, and basic wiring. Driver Assistance Features 1978: None by modern standards. Focus on driver feedback and mechanical systems. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles or 3 months (whichever comes first). Spark Plug Inspection: Inspect every 6,000 miles, replace as needed. Rotary engines require specific spark plug types (long reach, platinum or iridium recommended for longevity). Air Filter Replacement: Every 12,000 miles or annually. Coolant Flush: Every 24,000 miles or 2 years. Fluid Specifications Engine Oil Type: API SF/SG rated, SAE 10W-30 or 10W-40 (check manual for specific viscosity recommendations based on climate). Engine Oil Capacity Liters: Approx. 4.5 - 5.0 liters (including oil filter). Coolant Type: Ethylene glycol-based antifreeze, 50/50 mix with distilled water. Brake Fluid Type: DOT 3 or DOT 4 brake fluid. Known Issues Apex Seals: Wear of apex seals is a critical component for rotary engine health. Regular oil checks and proper engine warm-up are essential. Manual details seal wear diagnosis. Carburetor Tuning: Carburetors can be sensitive to altitude and wear. Proper tuning and cleaning are important for optimal performance and fuel economy. Manual provides specific jetting and adjustment data. Thermal Reactor System: Early emission control...