🏷️ Basic Information

Make:

Mazda

Model:

RX-7

Generation Designation:

First Generation (SA/FB)

Chassis Codes:

SA22C, FB33

Engine Codes:

12A

👋 Introduction

Niche Market:

Specialized for owners and tuners of the first-generation Mazda RX-7 (SA/FB) with the 12A rotary engine, particularly those involved in motorsport or performance enhancement.

Comparison To General Manuals:

This manual goes beyond standard factory service manuals by focusing on competition preparation, offering insights into tuning, modifications, and race-specific setups not found in general repair guides.

Unique Selling Proposition:

Rare and specialized content dedicated to extracting maximum performance from the iconic 12A rotary engine for competition purposes.

📋 Manual Details

Model Years Covered:

1978-1985 (specifically focusing on 1980s models with 12A engine, particularly competition preparation)

Regions Covered:

Global (primarily North American and Japanese market specifics relevant to competition tuning)

Estimated Page Count:

Variable, typically 500-800 pages for comprehensive service manuals of this era, this is a specialized manual likely condensed for competition focus.

Manual Type:

Competition Preparation and Service Repair Manual

Language:

English

Format:

Print (likely a high-quality, bound reproduction or original publication)

📖 Manual Coverage

Powertrain Engine:

Rotary engine (12A) theory of operation, disassembly, inspection, assembly, tuning, carburetor systems (e.g., Hitachi/Mikuni), ignition systems, cooling systems, lubrication systems, exhaust systems, fuel systems, performance modifications.

Powertrain Transmission:

Manual transmission (RWD), clutch system, drive shafts, rear axle assembly.

Chassis Suspension:

Front independent suspension (struts, control arms), rear live axle with locating arms, shock absorbers, springs, anti-roll bars, bushings, competition setup adjustments.

Chassis Brakes:

Front disc brakes, rear drum brakes (or early disc depending on specific model year), hydraulic system, brake bleeding, component replacement, performance brake upgrades.

Electrical:

Basic electrical system, charging system, starting system, lighting, instrumentation, ignition system details.

Body And Frame:

Body construction, panel alignment, interior trim, exterior components, chassis rigidity considerations for competition.

Engine Overhaul:

Complete rotary engine rebuild procedures, apex seal replacement, rotor housing inspection, side seal installation, dowel alignment.

Tuning And Modification:

Carburetor jetting and tuning for performance, ignition timing adjustments, exhaust system modifications for power, suspension geometry setup for racing/track use, aerodynamic considerations.

Troubleshooting:

Diagnostic charts for common issues, rotary specific problems (e.g., oil seal wear, starting issues when hot).

Maintenance Tasks:

Routine maintenance, fluid changes, spark plug replacement (specific to rotary engines), filter replacements, brake pad/shoe replacement.

Depth Of Coverage:

Comprehensive. Covers basic maintenance through complete engine and drivetrain rebuilds, with a strong emphasis on performance tuning and competition preparation specific to the 12A rotary engine.

Diagnostic Capabilities:

Advanced diagnostic procedures, including rotary specific tests and measurements.

📊 Manual Specifications

File Format:

Printed book

Print Quality:

High-quality, professional printing with clear diagrams and text.

Binding Type:

Stapled, perfect bound, or spiral bound (depending on original or reproduction).

Paper Type:

Durable paper stock suitable for workshop environments.

⚙️ Engine Specifications

Engine Type:

Mazda 12A Rotary (Wankel)

Displacement:

1146 cc (two rotor, 573 cc per rotor)

Rotor Design:

Two-rotor, peripheral port or side port configurations possible depending on specific tuning.

Engine Orientation:

Front-mounted, longitudinal

Cooling System:

Water-cooled

Horsepower Stock:

Approximately 100-135 hp (depending on specific model year and emissions equipment)

Torque Stock:

Approximately 110-120 lb-ft

Redline:

Typically around 6500-7000 RPM

Fuel Delivery:

Carbureted (e.g., Hitachi DCAS-12 twin-choke downdraft carburetor or similar; competition tuning may involve Weber or other performance carburetors)

Recommended Fuel:

Unleaded gasoline, octane rating appropriate for performance tuning (higher octane often recommended for competition).

🔧 Transmission

Transmission Type:

5-speed manual transaxle

Optional Transmission:

3-speed automatic (less common for competition focus)

Drivetrain:

Rear-wheel drive (RWD)

Clutch Type:

Single dry plate, diaphragm spring

📐 Dimensions

Body Style:

2+2 Coupe, Sport Coupe

Length:

Approx. 4214 mm (165.9 in)

Width:

Approx. 1651 mm (65.0 in)

Height:

Approx. 1280 mm (50.4 in)

Wheelbase:

Approx. 2400 mm (94.5 in)

Curb Weight:

Approx. 1050-1150 kg (2315-2535 lbs)

Weight Distribution:

Near 50/50 front/rear with proper tuning and ballast.

🛡️ Safety Features

Crash Test Ratings:

NHTSA and IIHS ratings from the era are limited and may not be directly comparable to modern standards. Focus on structural integrity and driver skill for competition.

Braking System:

Front ventilated discs, Rear drums (or discs on later models). ABS not available. Competition braking upgrades commonly covered.

Suspension Tuning:

Adjustments for track stability, camber, caster, toe for racing applications.

Seat Belts:

3-point inertia reel seat belts.

Body Structure:

Unit-body construction with front and rear crumple zones. Competition preparation may involve roll cage installation, covered in advanced sections.

💡 Technology Features

Audio System:

Basic AM/FM radio, often with cassette player. Aftermarket upgrades are common.

Driver Aids:

None by modern standards. Focus is on driver engagement and mechanical feedback.

Connectivity Features:

N/A

🔧 Maintenance

Oil Change Interval:

Every 3,000 miles or 3 months (whichever comes first), critical for rotary engines. Competition use may require more frequent changes.

Spark Plug Replacement:

Every 15,000-30,000 miles, use of specific platinum or iridium plugs recommended, or specialized racing plugs.

Coolant Flush:

Every 24,000 miles or 2 years.

Engine Oil Type:

API SG or higher, viscosity SAE 10W-30 or 10W-40. Critical to use oil with sufficient ZDDP for apex seal lubrication; specialized rotary oils recommended.

Transmission Fluid:

API GL-4, SAE 75W-90 gear oil (or specified by Mazda).

Coolant Type:

Ethylene glycol based coolant, 50/50 mix with distilled water. Mazda FL22 coolant may be an aftermarket option for enhanced protection.

Apex Seal Wear:

Common issue with high mileage or improper maintenance, leading to compression loss and poor starting. Covered extensively in the manual for diagnosis and replacement.

Carburetor Tuning:

Sensitivity to adjustment, requiring precise tuning for optimal performance and reliability. This manual details those procedures.

Hot Start Problems:

Often related to heat soak or fuel vaporization in the engine bay. Manual provides troubleshooting steps.

📚 Vehicle History

Mazda Rotary Legacy:

The RX-7 represents Mazda's commitment to the Wankel rotary engine, offering a unique driving experience distinct from piston engines. This lineage is central to its appeal.

First Generation Rx7:

Launched globally in 1978 (as the RX-7), it replaced the RX-3. The SA22C chassis was the foundation, evolving into the FB series with minor updates. It was praised for its balanced handling and lightweight rotary powertrain.

Production Years:

1978-1985

Manufacturing Locations:

Japan

🏆 Awards & Recognition

Automotive Journalism Accolades:

The first-generation RX-7 received numerous awards and positive reviews from automotive publications for its handling, styling, and innovative rotary engine, often cited as a benchmark for sports car dynamics.

Car And Driver 10 Best:

Named to Car and Driver's 10 Best list for multiple years during its production run.