Positioning:
The 1984 Mazda RX-7 represented a high-performance, sporty coupe designed to appeal to enthusiasts seeking unique engineering and agile handling. It competed in the sports car segment against rivals like the Datsun Z-series and Toyota Celica Supra.
Competition:
Key competitors included the Datsun 300ZX, Toyota Celica Supra, and Porsche 924. The RX-7 differentiated itself with its unique rotary engine technology and a focus on lightweight, balanced performance.
Rotary Engine:
The defining feature is the 12A rotary (Wankel) engine, offering a smooth power delivery, compact size, and high-revving characteristics distinct from traditional piston engines.
Handling:
The RX-7 is renowned for its excellent weight distribution and responsive handling, due in part to the compact rotary engine placement and sophisticated suspension design.
Design:
Sleek, aerodynamic styling with a distinctive wedge shape and pop-up headlights, embodying the sports car aesthetic of the era.
Engine And Drivetrain:
Rotary engine (12A) theory, disassembly, assembly, lubrication, cooling, fuel injection, ignition, exhaust, clutch, transmission (manual and automatic options), driveshaft, differentials, axles.
Chassis And Suspension:
Front suspension (struts, control arms, steering linkage), rear suspension (live axle, Watt's linkage, trailing arms), shock absorbers, springs, steering system (rack and pinion), wheel bearings, alignment specifications.
Brakes And Wheels:
Front disc brakes, rear drum brakes (or disc on some variants), brake hydraulics, parking brake, ABS (if equipped on later models or specific trims), wheel specifications, tire pressure.
Electrical System:
Battery, charging system (alternator), starting system, ignition system, lighting system (headlights, taillights, interior), fuses, relays, wiring diagrams for all circuits, gauges and instruments, horn, wipers, washers, power windows (if equipped).
Body And Interior:
Body panel removal and installation, door mechanisms, hood, trunk, glass replacement, interior trim, seats, dashboard, HVAC system (heating, ventilation, air conditioning), body repair and alignment specifications, rust prevention and repair.
Maintenance:
Routine checks, oil changes, filter replacements, spark plug (apex seal) inspection/replacement, coolant flushes, brake fluid changes, battery maintenance, lubrication points.
Diagnostics And Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues across all systems. Troubleshooting charts based on symptoms.
Repair And Rebuild:
Detailed procedures for component removal, disassembly, inspection, repair, assembly, and installation for all major and minor vehicle systems.
Special Tools:
Identification and usage of specialized tools required for specific repair or diagnostic procedures.
Depth:
Comprehensive dealership-level technical information, suitable for professional technicians and advanced DIY enthusiasts. Includes detailed torque specifications, clearances, and tolerances.
Format Details:
Assumed printed format: high-quality paper, durable binding, clear illustrations and diagrams.
Quality:
Designed for professional use, ensuring clarity and longevity of information.
Binding:
Likely saddle-stitched or perfect-bound for durability in a workshop environment.
Paper:
Durable, high-quality paper suitable for repeated use and reference.
Engine Type:
Naturally Aspirated Rotary (Wankel)
Displacement:
1146 cc (combined rotor displacement)
Rotor Housing Design:
Two-rotor design
Peak Horsepower:
Approximately 100-110 hp (varies slightly by market and specific tuning)
Peak Torque:
Approximately 105-115 lb-ft (varies slightly by market and specific tuning)
Redline:
Typically around 6500-7000 RPM
Acceleration 0 60 Mph:
Approximately 8-10 seconds (depending on transmission and driver)
Fuel Delivery:
Fuel injection (Bosch L-Jetronic or similar)
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Fuel Tank Capacity:
Approximately 14.5 gallons (55 liters)
Coolant Type:
Ethylene glycol-based coolant (e.g., Mazda Super Long Life Coolant or equivalent blue coolant)
Coolant Capacity:
Approximately 6.0 quarts (5.7 liters)
Oil Type:
API SG or SF rated synthetic or conventional oil, SAE 10W-30 or 10W-40 recommended
Oil Capacity:
Approximately 5.5 quarts (5.2 liters) with filter change
Oil Filter Part Number Example:
Fram PH8A, Bosch 3323, Wix 51515 (verify specific fitment)
Type:
5-speed manual transaxle
Type:
3-speed automatic transaxle
Clutch Type:
Dry, single-plate, diaphragm spring clutch
Transmission Fluid Manual:
GL-4 SAE 75W-90 or 80W-90 gear oil
Transmission Fluid Automatic:
Dexron III/Mercon compatible ATF
Length:
160.0 inches (4064 mm)
Width:
65.6 inches (1666 mm)
Height:
50.8 inches (1290 mm)
Wheelbase:
86.6 inches (2199 mm)
Front Track:
54.1 inches (1374 mm)
Rear Track:
53.5 inches (1360 mm)
Curb Weight:
Approximately 2300-2500 lbs (1043-1134 kg)
Gross Vehicle Weight Rating Gvwr:
Typically around 3300 lbs (1497 kg)
Towing Capacity:
Not specified or recommended for towing
Wheel Size Standard:
14 x 5.5 inches or 15 x 6 inches
Bolt Pattern:
4 x 114.3 mm (4.5 inches)
Tire Size Standard:
185/70R14, 195/60R14, or 195/60HR15
Crash Test Data:
Limited public data available for this era; focus on structural integrity and passive safety features of the time.
Brakes:
Power-assisted front disc brakes, rear drum brakes. Optional rear discs on certain trims/markets.
Steering:
Rack and pinion steering, providing responsive control.
Seatbelts:
3-point front seatbelts, lap belts for rear passengers (if applicable).
Body Structure:
Reinforced passenger compartment, energy-absorbing steering column.
Lighting:
Halogen headlights, adequate exterior lighting for visibility.
Audio System:
Factory AM/FM radio with cassette player, often with 2 or 4 speakers. Aftermarket upgrades common.
Gauges And Instruments:
Comprehensive dashboard with tachometer, speedometer, fuel gauge, temperature gauge, oil pressure gauge, and warning lights.
ABS:
Anti-lock Braking System (ABS) was not standard or widely available on the 1984 RX-7, but may have been an option on certain higher trims or later models of the first generation.
Connectivity Features:
No modern connectivity features (Bluetooth, USB, etc.) were available. This manual focuses on the mechanical and electrical systems of the era.
Oil Change Interval:
Every 3,000-5,000 miles or 3-6 months (depending on driving conditions and oil type).
Air Filter Replacement:
Every 15,000-30,000 miles or as needed based on inspection.
Spark Plug Apex Seal Inspection:
Inspection at regular intervals, replacement varies greatly by usage and maintenance, but typically every 50,000-100,000 miles for a rebuild.
Coolant Flush:
Every 2-3 years or 30,000 miles.
Brake Fluid Change:
Every 2 years or 24,000 miles.
Power Steering Fluid:
Dexron III/Mercon compatible ATF or specific Mazda power steering fluid.
Brake Fluid:
DOT 3 or DOT 4 glycol-based brake fluid.
Apex Seal Wear:
The primary concern with rotary engines is the wear of apex seals, leading to loss of compression. Proper maintenance and avoiding overheating are crucial.
Oil Consumption:
Rotary engines inherently consume some oil as part of their lubrication system. The manual will detail normal consumption rates.
Thermal Management:
Rotary engines generate heat differently than piston engines. Overheating can accelerate wear and damage. The cooling system is critical.
Carburetor Issues:
Early models may have carbureted systems prone to tuning issues or wear. Fuel injection on later models (like the 1984) generally provides better efficiency and reliability.
Rust And Corrosion:
As with most cars of this era, rust and corrosion, particularly in the wheel wells, rocker panels, and chassis, are common and require inspection and treatment.
Mazda Rotary:
Mazda's commitment to rotary engine technology began in the 1960s, with the RX-7 being a flagship model showcasing its unique advantages.
First Gen Introduction:
The first generation RX-7 (SA22C) debuted in 1978, replacing the RX-3. It was designed as a compact, affordable, and nimble sports car.
Fb Facelift 1981:
The FB generation (1978-1985) received a significant facelift in 1981, including revised body styling, updated interior, and suspension improvements, leading into the 1984 model year.
Production Years:
1978-1985 (First Generation)
Manufacturing Location:
Japan
Sales Figures:
Sold over 474,000 units worldwide during its first generation.
Car And Driver Review:
Frequently praised by automotive journalists of the time for its handling, styling, and unique rotary engine. Often featured in 'best sports car' lists.
Import Car Of The Year:
The first-generation RX-7 received accolades, including Motor Trend's Import Car of the Year award in 1979.
Performance Handling Rating:
Consistently rated highly for its sporting dynamics and driver engagement.