🏷️ Basic Information Identification Make: Mazda Model: RX-3 Year: 1975 Codes Chassis Code Family: S102A (Sedan), S124A (Coupe), S132A (Wagon) Engine Code Family: Mazda Rotary (Wankel) 👋 Introduction Market Position Historical Context: The 1975 Mazda RX-3 was a key model in Mazda's early success in international markets, particularly in North America, known for its distinctive rotary engine and sporty design. Competitive Analysis Competitors: Competed with compact sports coupes and sedans from manufacturers like Datsun (e.g., 240Z, 510), Toyota (e.g., Corona), and Ford (e.g., Pinto). Key Features Rotary Engine: The primary selling point and defining characteristic was the compact and smooth-revving Mazda rotary (Wankel) engine, offering a unique driving experience. Body Styles: Available in sedan, coupe, and station wagon variants, appealing to a broader customer base. Manual Utility User Benefit: Empowers owners to perform maintenance, diagnosis, and repairs, saving on dealership costs and fostering a deeper understanding of their vehicle. 📋 Manual Details Coverage Areas Primary Coverage: 1975 Mazda RX-3 (All Body Styles and Powertrain Options) Page Count Estimated Page Count: Extensive (typical factory service manuals of this era are 500+ pages, though exact count not specified) Manual Type Type: Factory Service / Repair / Workshop Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Lubrication, Cooling, Fuel & Emission Control, Engine Electrical, Clutch, Manual Transmission, Automatic Transmission, Propeller Shaft, Front Axle, Rear Axle Chassis & Body: Steering System, Braking System, Wheels & Tires, Suspension (Front & Rear), Body (Construction, Panels, Trim), Body Electrical System, Heating & Air Conditioning Systems Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, lubrication, tune-ups Repair & Overhaul: Engine disassembly and reassembly, transmission overhaul, brake system repair, suspension component replacement, electrical system diagnostics and repair, body panel repair Diagnostics: Troubleshooting guides for common problems, diagnostic flowcharts, electrical circuit diagrams Special Procedures: Use of special tools, torque specifications, alignment procedures Technical Depth Depth: Comprehensive, covering all aspects from routine maintenance to major component overhauls, suitable for professional mechanics and advanced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Compatibility: All Versions of Windows & Mac Requirements: Adobe PDF Reader & WinZip Print Quality Printability: All pages are printable Binding Type Binding: Digital Download (not a physical product) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Type: Rotary (Wankel) Engine Engine Model 1: Mazda 12A (Pre-emission controlled versions) Engine Displacement Cc 1: 1146 cc (equivalent to approximately 2.3L piston displacement for comparison) Rotor Design: Single Rotor or Twin Rotor (depending on specific RX-3 variant, though the 12A typically refers to the twin rotor setup common in the RX-3) Performance Horsepower Hp 1: Approximately 110-125 hp (SAE Gross) for the 12A engine (varies with specific tuning and market). Torque Lb-Ft 1: Approximately 115-130 lb-ft (SAE Gross) for the 12A engine. Fuel System Fuel Delivery: Two-barrel downdraft carburetor (e.g., Hitachi/SU type) for standard models. Some later or performance-oriented variants might have had different carburetor setups. Engine Features Ignition System: Distributor-based ignition system, typically with dual ignition coils for improved combustion and power delivery characteristic of rotary engines. Cooling Type: Water-cooled rotary engine 🔧 Transmission Standard Transmission Type 1: 4-speed Manual Transmission Optional Transmission Type 2: 3-speed Automatic Transmission Features Manual Gear Ratios: Detailed gear ratios for the manual transmission will be provided in the manual. Automatic Features: The automatic transmission in this era was a torque converter type, designed for smooth operation. 📐 Dimensions Exterior Wheelbase Inches: Approximately 97.0 inches (varies slightly by body style) Length Inches: Approximately 163.0 - 167.0 inches (varies by body style) Width Inches: Approximately 64.0 - 65.0 inches (varies by body style) Height Inches: Approximately 52.0 - 54.0 inches (varies by body style) Weights Curb Weight Lbs: Approximately 2,100 - 2,300 lbs (varies by body style and equipment) 🛡️ Safety Features Ratings Crash Test Data: No standardized crash test ratings like NHTSA or IIHS existed in the modern sense for vehicles of this era. Information would be limited to internal Mazda data or anecdotal evidence. Active Features Braking System: Front disc brakes, rear drum brakes. Power assistance often optional or standard on higher trims. Parking Brake: Mechanical parking brake acting on rear wheels. Passive Features Seat Belts: Standard lap belts for front occupants; lap belts or no belts in rear depending on trim and market. Three-point belts may have been optional on some models. Steering Column: Collapsible steering column was a developing safety feature in this period. 💡 Technology Features Infotainment Audio System: Basic AM/FM radio, often with a single speaker. Cassette players were rare and usually aftermarket additions. Driver Assistance Engine Control: Mechanical and vacuum-based systems for fuel and ignition timing control. No electronic engine management systems as understood today. Connectivity Connectivity Features: None beyond standard automotive electrical systems (e.g., lights, wipers, horn). 🔧 Maintenance Service Intervals Oil...