🏷️ Basic Information Identification Make: Mazda Model: RX-2 (Capella Rotary) Year: 1970 Codes Chassis Code: S102 Engine Code: 12A (Rotary) 👋 Introduction Market Position Positioning: The Mazda RX-2 was a sporty compact car introduced in the early 1970s, aiming to compete with established Japanese and European marques. It was a significant model for Mazda, showcasing their commitment to rotary engine technology. Competitive Analysis Competitors: Competed with vehicles like the Datsun 510, Toyota Corolla, Ford Escort, and various European compacts. Its unique rotary engine offered a distinct performance and refinement advantage. Key Features Rotary Engine: The primary selling point and defining characteristic of the RX-2 was its Wankel rotary engine, providing a smooth, high-revving driving experience. Styling: The RX-2 featured contemporary styling for its era, often praised for its clean lines and sporty appearance, available in coupe and sedan variants. Availability: Produced for a relatively short period, making original documentation and parts increasingly scarce. 📋 Manual Details Coverage Areas Coverage: Comprehensive mechanical and electrical repair, maintenance, and troubleshooting for the 1970 Mazda RX-2. Page Count Page Count: Estimated 300-500 pages (typical for a workshop manual of this era). Manual Type Manual Type: Workshop Manual / Service Manual / Repair Manual. Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Rotary engine (12A) – disassembly, assembly, lubrication, cooling, ignition, fuel, emissions controls. Transmission: Manual transmission – removal, installation, overhaul, clutch assembly. Drivetrain: Rear-wheel drive, driveshaft, differential, axle shafts. Suspension: Front independent suspension (MacPherson struts), rear leaf spring suspension, steering system. Brakes: Front disc brakes, rear drum brakes, brake system hydraulic components, troubleshooting. Electrical System: Wiring diagrams, charging system (alternator, battery), starting system, ignition system, lighting, instrumentation, accessories. Fuel System: Carburetor(s) (likely Hitachi or Mikuni), fuel tank, fuel pump, fuel lines. Cooling System: Radiator, cooling fan, water pump, thermostat, coolant flow. Bodywork: Body panel adjustments, trim removal/installation, door mechanisms, glass replacement. Heating Ventilation Air Conditioning: HVAC system components and operation (likely basic heating and ventilation). Procedures Included Maintenance: Regular service checks, lubrication, fluid changes, filter replacements, spark plug inspection/replacement. Troubleshooting: Diagnostic charts and symptom-based troubleshooting for common mechanical and electrical issues. Repair: Detailed step-by-step instructions for component removal, repair, and reinstallation. Overhaul: Complete engine rebuild procedures, transmission overhaul, brake caliper/wheel cylinder rebuild. Specifications: Torque values, clearances, timing settings, fluid capacities, and other critical specifications. Technical Depth Depth: Comprehensive; covers from basic maintenance to full engine and transmission rebuilds, including detailed diagnostic procedures. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text if OCR processed, otherwise image-based. Print Quality Quality: Digital reproduction of original factory manual; quality may vary but should be legible. Binding Type Binding: N/A (Digital Download). Paper Type Paper Type: N/A (Digital Download). ⚙️ Engine Specifications Primary Engine Engine Type: Two-rotor Wankel (Rotary) Engine Code: 12A Displacement: 1146 cc (69.9 cu in) Rotor Housing Diameter: 70 mm Rotor Radius: 57 mm Compression Ratio: 9.4:1 (typical) Performance Horsepower: Approximately 90-100 hp @ 6500 rpm (varies by market and emissions control). Torque: Approximately 100-110 lb-ft @ 3500 rpm (varies). Fuel System Carburetion: Single twin-choke downdraft carburetor (e.g., Hitachi/Mikuni) Fuel Type: Unleaded gasoline (premium recommended) Lubrication Oil Capacity: Approximately 4.5-5.0 liters (with filter). Oil Type: API SE/SF rated, SAE 10W-30 or 10W-40 recommended (check specific manual for exact specs). 🔧 Transmission Standard Type: 4-speed manual transmission Optional Type: 3-speed automatic transmission (less common) Features Clutch Type: Dry single-plate clutch Transmission Fluid Type: GL-4 gear oil (e.g., SAE 75W-90 or 80W-90) Transmission Fluid Capacity: Approximately 1.8-2.0 liters. 📐 Dimensions Exterior Wheelbase: Approximately 2475 mm (97.4 inches) Length: Approximately 4130 mm (162.6 inches) Width: Approximately 1600 mm (63.0 inches) Height: Approximately 1355 mm (53.3 inches) Weights Curb Weight: Approximately 950-1050 kg (2090-2315 lbs), depending on body style and equipment. Gross Vehicle Weight Rating: Not commonly specified in manuals of this era but generally around 1400 kg. 🛡️ Safety Features Ratings Crash Testing: No modern crash safety ratings available for this era of vehicle. Safety features were basic. Active Features Brakes: Front disc, rear drum brakes. Power assist may be optional. Steering: Recirculating ball steering, typically non-power assist. Passive Features Seatbelts: Lap belts standard, shoulder belts may be optional depending on market and trim. Body Structure: Unibody construction with basic crumple zones. 💡 Technology Features Infotainment Audio: Basic AM/FM radio, potentially with an 8-track player or cassette player as an aftermarket addition. Driver Assistance Features: Minimal. Primarily focused on mechanical systems. No electronic driver assistance features. Connectivity Features: N/A. No connectivity features. 🔧 Maintenance Service Intervals Oil Change: Every 5,000 km (3,000 miles) or 6 months, whichever comes first. Air Filter Replacement: Every 10,000 km (6,000 miles) or annually. Spark Plug Inspection: Every 10,000 km (6,000 miles). Replacement recommended at 20,000 km (12,000 miles). Ignition Timing Adjustment: Check every 20,000 km (12,000 miles). Fluid Specifications Coolant: Ethylene glycol-based antifreeze mixed...
The Mazda RX-2 was a sporty compact car introduced in the early 1970s, aiming to compete with established Japanese and European marques. It was a significant model for Mazda, showcasing their commitment to rotary engine technology.
Competitive Analysis
Competitors:
Competed with vehicles like the Datsun 510, Toyota Corolla, Ford Escort, and various European compacts. Its unique rotary engine offered a distinct performance and refinement advantage.
Key Features
Rotary Engine:
The primary selling point and defining characteristic of the RX-2 was its Wankel rotary engine, providing a smooth, high-revving driving experience.
Styling:
The RX-2 featured contemporary styling for its era, often praised for its clean lines and sporty appearance, available in coupe and sedan variants.
Availability:
Produced for a relatively short period, making original documentation and parts increasingly scarce.
📋 Manual Details
Coverage Areas
Coverage:
Comprehensive mechanical and electrical repair, maintenance, and troubleshooting for the 1970 Mazda RX-2.
Page Count
Page Count:
Estimated 300-500 pages (typical for a workshop manual of this era).
Torque values, clearances, timing settings, fluid capacities, and other critical specifications.
Technical Depth
Depth:
Comprehensive; covers from basic maintenance to full engine and transmission rebuilds, including detailed diagnostic procedures.
📊 Manual Specifications
File Format
File Type:
PDF
Searchability:
Likely searchable text if OCR processed, otherwise image-based.
Print Quality
Quality:
Digital reproduction of original factory manual; quality may vary but should be legible.
Binding Type
Binding:
N/A (Digital Download).
Paper Type
Paper Type:
N/A (Digital Download).
⚙️ Engine Specifications
Primary Engine
Engine Type:
Two-rotor Wankel (Rotary)
Engine Code:
12A
Displacement:
1146 cc (69.9 cu in)
Rotor Housing Diameter:
70 mm
Rotor Radius:
57 mm
Compression Ratio:
9.4:1 (typical)
Performance
Horsepower:
Approximately 90-100 hp @ 6500 rpm (varies by market and emissions control).
Torque:
Approximately 100-110 lb-ft @ 3500 rpm (varies).
Fuel System
Carburetion:
Single twin-choke downdraft carburetor (e.g., Hitachi/Mikuni)
Fuel Type:
Unleaded gasoline (premium recommended)
Lubrication
Oil Capacity:
Approximately 4.5-5.0 liters (with filter).
Oil Type:
API SE/SF rated, SAE 10W-30 or 10W-40 recommended (check specific manual for exact specs).
🔧 Transmission
Standard
Type:
4-speed manual transmission
Optional
Type:
3-speed automatic transmission (less common)
Features
Clutch Type:
Dry single-plate clutch
Transmission Fluid Type:
GL-4 gear oil (e.g., SAE 75W-90 or 80W-90)
Transmission Fluid Capacity:
Approximately 1.8-2.0 liters.
📐 Dimensions
Exterior
Wheelbase:
Approximately 2475 mm (97.4 inches)
Length:
Approximately 4130 mm (162.6 inches)
Width:
Approximately 1600 mm (63.0 inches)
Height:
Approximately 1355 mm (53.3 inches)
Weights
Curb Weight:
Approximately 950-1050 kg (2090-2315 lbs), depending on body style and equipment.
Gross Vehicle Weight Rating:
Not commonly specified in manuals of this era but generally around 1400 kg.
🛡️ Safety Features
Ratings
Crash Testing:
No modern crash safety ratings available for this era of vehicle. Safety features were basic.
Active Features
Brakes:
Front disc, rear drum brakes. Power assist may be optional.
Steering:
Recirculating ball steering, typically non-power assist.
Passive Features
Seatbelts:
Lap belts standard, shoulder belts may be optional depending on market and trim.
Body Structure:
Unibody construction with basic crumple zones.
💡 Technology Features
Infotainment
Audio:
Basic AM/FM radio, potentially with an 8-track player or cassette player as an aftermarket addition.
Driver Assistance
Features:
Minimal. Primarily focused on mechanical systems. No electronic driver assistance features.
Connectivity
Features:
N/A. No connectivity features.
🔧 Maintenance
Service Intervals
Oil Change:
Every 5,000 km (3,000 miles) or 6 months, whichever comes first.
Air Filter Replacement:
Every 10,000 km (6,000 miles) or annually.
Spark Plug Inspection:
Every 10,000 km (6,000 miles). Replacement recommended at 20,000 km (12,000 miles).
Ignition Timing Adjustment:
Check every 20,000 km (12,000 miles).
Fluid Specifications
Coolant:
Ethylene glycol-based antifreeze mixed 50/50 with distilled water.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
Washer Fluid:
Water or approved windshield washer fluid.
Known Issues
Apex Seals:
Wear or failure of apex seals is a common rotary engine issue, leading to compression loss and poor performance. Requires engine rebuild.
Carburetor Issues:
Carburetor tuning can be sensitive; vacuum leaks or worn components can affect fuel mixture and idle quality.
Oil Consumption:
Rotary engines inherently consume some oil for lubrication. Excessive consumption can indicate seal wear.
Cooling System:
Overheating can be an issue if the cooling system is not meticulously maintained. Check radiator, hoses, and water pump.
Electrical Gremlins:
Aging wiring harnesses and connectors can lead to intermittent electrical problems.
📚 Vehicle History
Brand Heritage
Rotary Pioneering:
Mazda's history is inextricably linked with the Wankel rotary engine, beginning with the Cosmo and continuing with models like the RX-2, RX-3, RX-4, and later the RX-7 series. This commitment set them apart.
Model Evolution
Predecessor:
The RX-2 (Capella Rotary) followed the Mazda R100 (Familia Rotary) and shared its platform with the Mazda Capella (Capella Rotary).
Successor:
The RX-2 was succeeded by the RX-3 (Savanna Rotary) in most markets.
Production
Production Years:
1970-1978 (production dates vary slightly by market).
Manufacturing Locations:
Japan.
🏆 Awards & Recognition
Recognitions
Historical Relevance:
Recognized as a significant step in Mazda's rotary development and a stylish, engaging compact car for its era.
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