🏷️ Basic Information Identification Make: Mazda Model: RX-2 / Capela Internal Model Code: Capella (AP) Engine Designation: Rotary Engine Variant Covered: Rotary 13B (Two-Rotor) Chassis Codes Covered: AP Series (e.g., AP17) Production Year Covered: 1971 Codes Product Code Reference: Likely a reproduction or compiled service manual 👋 Introduction Market Position Segment: Compact/Small Family Car Positioning Statement: The Mazda RX-2 (Capela) was Mazda's second rotary-powered production car, aiming to offer a refined and sporty alternative in the compact class, leveraging its unique engine technology. Competitive Analysis Competitors: Toyota Corona, Datsun 1200/1800 (Sunny/Bluebird), Nissan Skyline, Ford Escort, Holden Torana. Key Features Engine Type: Unique rotary engine technology, offering smooth operation and high revving capability compared to piston engines of the era. Styling: European-influenced styling, often compared to contemporary Alfa Romeo or Fiat models, with a clean and elegant design. Handling: Lightweight construction and rotary engine contributed to a favorable power-to-weight ratio and agile handling. Interior Appointments: Relatively upscale interior for its class, with comfortable seating and a driver-focused dashboard. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Diagnostics, Troubleshooting Page Count Estimated Page Count: 300-600 (typical for comprehensive service manuals of this era) Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine: Complete rotary engine (13B) disassembly, assembly, tuning, lubrication, cooling, fuel delivery, ignition, emissions control. Transmission: Manual transmission (Type likely T4) service, clutch system, drive shafts, universal joints, differential. Brakes: Hydraulic system, front disc brakes, rear drum brakes, parking brake, brake fluid specifications. Suspension: Front independent suspension (MacPherson struts), rear leaf spring solid axle, shock absorbers, springs, bushings. Steering: Recirculating ball steering gear, steering linkage, alignment specifications. Electrical: 12V DC system, battery, alternator, starter motor, ignition system, lighting, instrumentation, wiring diagrams. Fuel System: Fuel tank, fuel lines, carburetor (likely Hitachi or similar), fuel pump, emission control related components. Cooling System: Radiator, fan, water pump, thermostat, coolant specifications, capacity. Exhaust System: Exhaust manifolds, pipes, muffler, catalytic converter (if applicable for market), emission control adjustments. Body And Frame: Body construction, door mechanisms, interior trim, glass replacement, jacking points, corrosion protection. Procedures Included Engine Rebuild: Complete step-by-step procedures for apex seal replacement, rotor housing lapping, eccentric shaft inspection, bearing clearances. Tune Up: Spark plug gap and type, ignition timing adjustment, carburetor idle speed and mixture settings, compression testing (specific rotary method). Troubleshooting: Diagnostic charts for common symptoms like hard starting, rough idle, poor performance, fuel consumption issues, electrical faults. Brake Service: Brake pad/shoe replacement, caliper/wheel cylinder overhaul, bleeding procedure, parking brake adjustment. Suspension Repair: Strut replacement, ball joint inspection, tie rod end replacement, spring and shock absorber replacement. Electrical Diagnostics: Use of multimeters, testing circuits, diagnosing starter, charging, and lighting issues, fuse and relay identification. Carburetor Overhaul: Detailed instructions for disassembly, cleaning, reassembly, and adjustment of the primary carburetor. Technical Depth Depth: Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from routine maintenance to full engine rebuilds. Diagnostic Capability: Includes specific diagnostic procedures for rotary engine unique issues, such as apex seal wear and oil consumption. Torque Specifications: Detailed torque values for all critical fasteners throughout the vehicle. Clearances And Tolerances: Precise specifications for engine internal component clearances, bearing play, and other critical measurements. 📊 Manual Specifications File Format Format: PDF Searchability: Text-searchable (if digitally generated from OCR or original digital files) Print Quality Resolution: High-resolution scans for clear text and diagrams (assuming quality reproduction) Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Mazda 13B Rotary (Two-Rotor) Engine Code: Likely an early iteration of the 13B, often referred to by chassis designation (e.g., AP) Displacement: 1146 cc (69.9 cu in) - calculated from rotor housing geometry (equivalent displacement is often cited as higher, e.g., 2.3L, but actual swept volume is this). Rotor Design: Reuleaux triangle rotor Cooling System: Water-cooled Performance Horsepower: Approximately 110-125 PS (108-123 bhp; 81-92 kW) at 6000-6500 rpm (varies by market and specific tuning). Torque: Approximately 160-170 Nm (118-125 lb-ft) at 3500-4000 rpm. Redline: Approximately 7000 rpm Fuel System Fuel Delivery: Single Downdraft Carburetor (e.g., Hitachi DC11) Fuel Type: Unleaded gasoline (or leaded in some markets depending on introduction date and local regulations). Lubrication Oil System: Forced lubrication with a separate oil injection system for apex seals or mixed in fuel for initial lubrication depending on specific engine variant and market. Emissions Control Features: Early emission control devices may be present (e.g., air injection, thermal reactor) depending on market regulations. 🔧 Transmission Standard Type: 4-speed Manual Transmission Optional Type: 3-speed Automatic Transmission (less common) Features Clutch: Dry single-plate clutch Drive Layout: Rear-wheel drive (RWD) 📐 Dimensions Exterior Wheelbase: Approx. 2500 mm (98.4 in) Length: Approx. 4100-4200 mm (161.4-165.4 in) Width: Approx. 1600 mm (63.0 in) Height: Approx. 1350-1400...
The Mazda RX-2 (Capela) was Mazda's second rotary-powered production car, aiming to offer a refined and sporty alternative in the compact class, leveraging its unique engine technology.
Competitive Analysis
Competitors:
Toyota Corona, Datsun 1200/1800 (Sunny/Bluebird), Nissan Skyline, Ford Escort, Holden Torana.
Key Features
Engine Type:
Unique rotary engine technology, offering smooth operation and high revving capability compared to piston engines of the era.
Styling:
European-influenced styling, often compared to contemporary Alfa Romeo or Fiat models, with a clean and elegant design.
Handling:
Lightweight construction and rotary engine contributed to a favorable power-to-weight ratio and agile handling.
Interior Appointments:
Relatively upscale interior for its class, with comfortable seating and a driver-focused dashboard.
📋 Manual Details
Coverage Areas
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Diagnostics, Troubleshooting
Page Count
Estimated Page Count:
300-600 (typical for comprehensive service manuals of this era)
Strut replacement, ball joint inspection, tie rod end replacement, spring and shock absorber replacement.
Electrical Diagnostics:
Use of multimeters, testing circuits, diagnosing starter, charging, and lighting issues, fuse and relay identification.
Carburetor Overhaul:
Detailed instructions for disassembly, cleaning, reassembly, and adjustment of the primary carburetor.
Technical Depth
Depth:
Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from routine maintenance to full engine rebuilds.
Diagnostic Capability:
Includes specific diagnostic procedures for rotary engine unique issues, such as apex seal wear and oil consumption.
Torque Specifications:
Detailed torque values for all critical fasteners throughout the vehicle.
Clearances And Tolerances:
Precise specifications for engine internal component clearances, bearing play, and other critical measurements.
📊 Manual Specifications
File Format
Format:
PDF
Searchability:
Text-searchable (if digitally generated from OCR or original digital files)
Print Quality
Resolution:
High-resolution scans for clear text and diagrams (assuming quality reproduction)
Binding Type
Binding:
N/A (Digital format)
Paper Type
Paper:
N/A (Digital format)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Mazda 13B Rotary (Two-Rotor)
Engine Code:
Likely an early iteration of the 13B, often referred to by chassis designation (e.g., AP)
Displacement:
1146 cc (69.9 cu in) - calculated from rotor housing geometry (equivalent displacement is often cited as higher, e.g., 2.3L, but actual swept volume is this).
Rotor Design:
Reuleaux triangle rotor
Cooling System:
Water-cooled
Performance
Horsepower:
Approximately 110-125 PS (108-123 bhp; 81-92 kW) at 6000-6500 rpm (varies by market and specific tuning).
Torque:
Approximately 160-170 Nm (118-125 lb-ft) at 3500-4000 rpm.
Redline:
Approximately 7000 rpm
Fuel System
Fuel Delivery:
Single Downdraft Carburetor (e.g., Hitachi DC11)
Fuel Type:
Unleaded gasoline (or leaded in some markets depending on introduction date and local regulations).
Lubrication
Oil System:
Forced lubrication with a separate oil injection system for apex seals or mixed in fuel for initial lubrication depending on specific engine variant and market.
Emissions
Control Features:
Early emission control devices may be present (e.g., air injection, thermal reactor) depending on market regulations.
🔧 Transmission
Standard
Type:
4-speed Manual Transmission
Optional
Type:
3-speed Automatic Transmission (less common)
Features
Clutch:
Dry single-plate clutch
Drive Layout:
Rear-wheel drive (RWD)
📐 Dimensions
Exterior
Wheelbase:
Approx. 2500 mm (98.4 in)
Length:
Approx. 4100-4200 mm (161.4-165.4 in)
Width:
Approx. 1600 mm (63.0 in)
Height:
Approx. 1350-1400 mm (53.1-55.1 in)
Weights
Curb Weight:
Approx. 1000-1100 kg (2205-2425 lbs)
🛡️ Safety Features
Ratings
Crash Test Data:
No formal crash test ratings available from modern bodies (NHTSA, IIHS) for this era and vehicle.
Active Features
Braking System:
Front disc brakes, rear drum brakes.
Passive Features
Seatbelts:
Standard lap belts, possibly optional shoulder belts in later production batches.
Construction:
Unitary construction with reinforced chassis elements.
💡 Technology Features
Infotainment
Audio System:
Basic AM/FM radio, possibly with an optional 8-track player. Speaker configuration typically 2-4 speakers.
Driver Assistance
Features:
Minimal driver assistance features. Focus on basic mechanical systems. No electronic aids like ABS, traction control, or airbags were standard.
Connectivity
Features:
No modern connectivity features. Analog gauges and mechanical controls.
🔧 Maintenance
Service Intervals
Oil Change:
Every 3,000-5,000 miles (5,000-8,000 km) or 3-6 months, depending on usage and oil quality. Rotary engines require specific attention to oil.
Spark Plugs:
Check/replace every 15,000-25,000 miles (24,000-40,000 km). Rotary engines often use two spark plugs per rotor.
Air Filter:
Check every oil change, replace every 15,000-20,000 miles (24,000-32,000 km).
Coolant Flush:
Every 2-3 years or 30,000-40,000 miles (48,000-64,000 km).
Fluid Specifications
Engine Oil:
API SF or SG classification, SAE 10W-30 or 10W-40. Special consideration for rotary oil is recommended, especially pre-mix or a reliable injection system.
Coolant:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Capacity approx. 7-8 liters.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
Transmission Fluid:
GL-4 Gear Oil, SAE 80W-90 or 75W-90.
Differential Fluid:
GL-5 Gear Oil, SAE 80W-90.
Known Issues
Apex Seals:
Wear of apex seals is a common issue in higher mileage rotary engines, leading to compression loss, rough running, and oil consumption.
Oil Consumption:
Rotary engines naturally consume some oil for lubrication. Excessive consumption often indicates seal wear or internal issues.
Carburetor Tuning:
Carburetors can be sensitive and require periodic adjustment for optimal performance and fuel economy.
Ignition System:
Points ignition systems require regular maintenance (cleaning, gapping). Distributor issues can affect timing.
Cooling System Maintenance:
Overheating can exacerbate apex seal wear. Regular checks of coolant levels, radiator condition, and thermostat function are critical.
📚 Vehicle History
Brand Heritage
Mazda Rotary Legacy:
The RX-2 followed the groundbreaking RX-3 (Savanna) and established Mazda's reputation for rotary engine technology in a more upscale package.
Model Evolution
Predecessor:
Mazda R100 (Cosmo Sport LB variant was earlier, but RX-2 was first 'mainstream' rotary).
Successor:
Mazda RX-3 (Capella AP) and later the RX-4 (Luce AP).
Production
Production Period:
1971-1978 (Global market variations)
Manufacturing Location:
Japan
🏆 Awards & Recognition
Recognitions
Rotary Engine Acclaim:
Mazda's rotary engines, in general, received acclaim for their smoothness, compact size, and unique performance characteristics, winning prestigious engine awards in later years.
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