Mazda RX2 RX3 1970-1978 Full Service Repair Manual

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Art.-Nr: 83903

Stichworte: 1970 1971 1972 1973 1974 1975 1976 1977 1978 Car Cars Mazda Misc RX2 RX3

Produktvarianten

Beschreibung

This manual covers the Mazda RX-2 (Satsuma) and RX-3 (Savanna) models, produced between 1970 and 1978. These vehicles are recognized for their pioneering rotary engine technology, offering a unique driving experience and sporty performance for their era. As compact sports coupes, sedans, and wagons, they competed with other popular Japanese and international models of the time. The RX-2 and RX-3 are celebrated for their distinctive styling and Mazda's commitment to the Wankel rotary engine, a key selling point that set them apart in the automotive landscape. This comprehensive service repair manual provides detailed guidance for maintaining and repairing your Mazda RX-2 or RX-3. It covers all essential systems, including the rotary engine (12A), fuel, ignition, cooling, transmission, drivetrain, suspension, steering, brakes, and electrical systems. You will find in-depth procedures for scheduled maintenance, engine and transmission overhauls, brake servicing, suspension and steering repairs, and electrical diagnostics, complete with torque specifications and wiring diagrams. This manual is an indispensable resource for enthusiasts, restorers, and mechanics seeking to preserve and operate these classic vehicles.

🏷️ Basic Information

Identification

Make:

Mazda

Model:

RX-2 / RX-3

Chassis Codes:

RX-2: S102A, RX-3: S124A, S132A, S133A, S134A, S135A, S136A, S137A

Generation

Generation Period:

1970-1978

👋 Introduction

Market Position

Segment:

Compact Sports Coupe / Sedan / Wagon

Target Audience:

Enthusiasts, restorers, DIY mechanics, owners seeking in-depth technical information.

Competitive Analysis

Key Competitors:

Datsun 510, Toyota Corolla TE20/30, Mitsubishi Lancer, Nissan Sunny/Cherry.

Key Features

Unique Selling Proposition:

Rotary engine technology, sporty design, accessible performance for its era.

Manual Value:

Essential for maintaining and repairing the unique rotary engine and classic Mazda chassis.

📋 Manual Details

Coverage Areas

Covered Model Years:

1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978

Covered Models:

Mazda RX-2 (Satsuma), Mazda RX-3 (Savanna)

Page Count

Estimated Page Count:

Manual Type

Type:

Full Service Repair Manual

Language

Language:

English

Format

Format:

PDF Download

File Format

File Type:

Searchability:

Searchable text content

Printable:

Printable pages

Print Quality

Quality:

High-resolution scans of original factory manuals

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Type:

N/A (Digital Download)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Rotary engine (12A), engine assembly, disassembly, inspection, torque specifications, seals, lubrication system.

Fuel System:

Carburetor (various models), fuel pump, fuel lines, fuel tank, emissions control systems.

Ignition System:

Distributor, ignition coils, spark plugs, wiring, timing adjustments.

Cooling System:

Radiator, fan, water pump, thermostat, coolant hoses, specifications.

Transmission Manual:

Clutch operation, gearbox disassembly, assembly, inspection, gear ratios, lubricant specifications.

Transmission Automatic:

ATF specifications, operation, adjustment procedures (if applicable).

Drivetrain:

Driveshaft, universal joints, rear axle, differential inspection and service.

Suspension Front:

MacPherson strut, control arms, ball joints, bushings, alignment specifications.

Suspension Rear:

Leaf springs, shock absorbers, locating links, inspection and service.

Steering System:

Steering gearbox, tie rods, steering column, linkage, lubrication.

Brake System:

Front disc brakes, rear drum brakes, master cylinder, wheel cylinders, brake lines, bleeding procedures, specifications.

Electrical System:

Wiring diagrams, alternator, starter motor, battery service, lighting systems, fuses, relays, instrument cluster.

Body And Chassis:

Body panel removal and installation, door mechanisms, window regulators, interior trim, chassis lubrication points.

HVAC:

Heater core, blower motor, controls, vents (if applicable).

Procedures Included

Scheduled Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid checks, lubrication points, tire rotation.

Engine Repair:

Complete engine rebuild, apex seal replacement, rotor housing resurfacing, porting (basic information), rebuild procedures.

Transmission Repair:

Gearbox rebuild, clutch replacement, synchro ring inspection.

Brake Service:

Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake line replacement, bleeding.

Suspension And Steering:

Replacement of ball joints, bushings, tie rod ends, steering gear adjustment.

Electrical Diagnostics:

Troubleshooting electrical faults using wiring diagrams, testing components.

Bodywork Repair:

Door adjustments, panel replacement guidelines, seal replacement.

Technical Depth

Depth:

Comprehensive, from routine maintenance to major overhauls and troubleshooting.

Diagnostic Procedures:

Step-by-step troubleshooting guides for common problems.

Torque Specifications:

Detailed torque values for all critical fasteners.

Wiring Diagrams:

Full electrical system schematics.

⚙️ Engine Specifications

Primary Engine

Engine Type:

Mazda Rotary (Wankel)

Engine Code Common:

Displacement:

1146 cc (2 x 573 cc rotor chambers)

Performance

Horsepower Approx:

90-110 hp (depending on specific engine variant and emissions control)

Torque Approx:

95-105 lb-ft (depending on specific engine variant)

Fuel System

Fuel Delivery:

Single or Twin Barrel Carburetor (e.g., Hitachi, Mikuni, Stromberg)

Fuel Type:

Unleaded Gasoline (Octane rating dependent on local availability and engine tuning)

Engine Mechanical

Rotor Housing Material:

Hard-chromed steel or cast iron with hard-chrome plating

Apex Seals Material:

Carbon-graphite or ceramic composite

🔧 Transmission

Standard

Type:

4-Speed Manual (most common)

Optional

Type:

3-Speed Automatic (less common)

Features

Manual Gear Ratios:

Varies by specific model and year, manual will detail these.

Fluid Specifications

Manual Transmission Oil:

API GL-4, SAE 75W-90 or 80W-90

Automatic Transmission Fluid:

Dexron II (or equivalent)

📐 Dimensions

Exterior

Body Styles:

Coupe, Sedan, Hardtop Coupe, Wagon

Wheelbase Approx Rx2:

95.1 inches (2415 mm)

Wheelbase Approx Rx3:

93.9 inches (2385 mm) for Coupe/Sedan, 97.2 inches (2470 mm) for Wagon

Weights

Curb Weight Approx:

2200-2500 lbs (1000-1135 kg) depending on body style and equipment

🛡️ Safety Features

Ratings

Crash Test Data:

No modern crash test ratings available for vehicles of this era; safety features are basic.

Active Features

Braking System:

Front Disc, Rear Drum (standard)

Passive Features

Seatbelts:

Lap belts (front), basic lap belts (rear)

Steering Column:

Collapsible steering column (design varies by year)

💡 Technology Features

Infotainment

Features:

Basic AM/FM radio, optional cassette player. Manual covers radio removal and basic electrical connections.

Driver Assistance

Features:

None by modern standards. Focus on mechanical controls.

Connectivity

Features:

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 3,000 miles (4,800 km) or 3 months, whichever comes first.

Oil Filter Replacement:

With every oil change.

Spark Plug Replacement:

Refer to manual for specific interval (typically 10,000-20,000 miles).

Coolant Flush:

Every 24,000 miles (38,400 km) or 24 months.

Fluid Specifications

Engine Oil Type:

API SF/CD, SAE 10W-30 or 10W-40 (check manual for specific viscosity based on temperature).

Engine Oil Capacity:

Approximately 4.5 US quarts (4.2 liters) with filter.

Coolant Type:

Ethylene Glycol based antifreeze (50/50 mix with distilled water).

Known Issues

Rotary Engine Apex Seals:

Wear and failure of apex seals leading to compression loss and rough running. Requires rebuild.

Carburetor Issues:

Tuning difficulties, vacuum leaks, fuel delivery problems, especially with age.

Cooling System:

Overheating due to inefficient cooling design, potential for coolant seal failure in housings.

Chassis Rust:

Common issue for vehicles of this age; requires inspection and potential repair.

Electrical Aging:

Deterioration of wiring insulation, connector corrosion, and component failure.

📚 Vehicle History

Brand Heritage

Mazda Rotary Development:

Mazda's commitment to rotary engine technology, licensed from NSU/Wankel.

Model Evolution

Rx2 Introduction:

Introduced in 1970 as Mazda's first rotary-powered car for export markets, based on the Capella (A MAZDA 616/618).

Rx3 Introduction:

Introduced in 1971 (Japan) as the Savanna, replacing the R100 and offering a more advanced rotary powertrain. Exported as RX-3.

Styling Influences:

Classic Japanese sports car styling of the era, influenced by American muscle cars and European GTs.

Production

Production Years:

RX-2: 1970-1972, RX-3: 1971-1978

Assembly Locations:

Japan

🏆 Awards & Recognition

Recognitions

Rotary Engine Reputation:

Mazda's rotary engines were recognized for their unique smooth operation and compact size, though long-term durability became a concern.

Automotive Press Reviews:

Praised for sporty handling and distinctive engine, but often noted for fuel consumption and emissions compared to piston engines.