Historical Context:
The Mazda RX-2, known as the Capella Rotary in some markets, was a significant model in Mazda's early adoption of rotary engine technology. It targeted a segment of buyers seeking sporty performance and unique engineering.
Key Competitors Era:
Competed with other sporty coupes and sedans of the mid-1970s, often offering a distinct alternative due to its rotary powerplant.
Unique Selling Proposition:
The primary appeal was the smooth-revving, compact rotary engine, providing a distinct driving experience compared to conventional piston engines of the era.
Primary Coverage:
Mechanical, Electrical, Body, and Troubleshooting for the 1976 Mazda RX-2
Secondary Coverage:
Maintenance, Diagnostics, Component Replacement, and Specifications
Estimated Page Count:
Varies by specific factory publication, but comprehensive manuals of this era often exceed 500 pages.
Type:
Factory Service and Repair Manual
Powertrain:
Rotary Engine (Wankel), Lubrication, Cooling, Fuel System, Ignition System, Exhaust System, Automatic Transmission, Manual Transmission, Driveshafts, Differential, Axles.
Chassis And Suspension:
Front Suspension (MacPherson Strut), Rear Suspension (Leaf Spring or Watt's Linkage), Steering System (including power steering), Wheel Alignment, Tires, Brakes (Front Disc, Rear Drum), Parking Brake.
Electrical And Body:
Wiring Schematics, Starting System, Charging System, Lighting, Gauges, Switches, Wiper System, Horn, Audio System, Air Conditioning, Interior Trim, Exterior Trim, Body Panels, Glass, Doors, Seats.
Routine Maintenance:
Oil Changes, Filter Replacements, Spark Plug Inspection/Replacement (if applicable to rotary design), Coolant Checks, Brake Fluid Checks, Belt Adjustments, Lubrication Points.
Major Repairs:
Engine Rebuilding (Apex Seals, Rotors, Housings), Transmission Overhaul, Brake System Overhaul, Suspension Component Replacement, Steering System Repair, Electrical Component Diagnosis and Replacement.
Diagnostics And Troubleshooting:
Systematic troubleshooting guides for common and uncommon issues, symptom-based diagnostics.
Depth:
Factory-level detail, including step-by-step instructions, torque specifications, clearances, diagnostic charts, wiring diagrams, and exploded views.
Format:
Digital PDF, compatible with Adobe Reader
Printability:
High-quality, allowing for printing of individual pages or sections at enlarged scales.
Binding:
Not Applicable (Digital Format)
Paper Quality:
Not Applicable (Digital Format - simulated for print)
Engine Type:
Rotary (Wankel)
Displacement:
1146 cc (two rotors, 573 cc per rotor)
Horsepower Approx:
Approximately 110-125 hp (depending on market and specific tuning)
Torque Approx:
Approximately 115-130 lb-ft (depending on market and specific tuning)
Fuel Delivery:
Two-barrel downdraft carburetor (e.g., Hitachi, Solex)
Fuel Type:
Unleaded Gasoline (early adoption of unleaded)
Apex Seal Life:
Apex seals are a critical wear item; proper lubrication and avoiding engine lugging are essential for longevity.
Oil Consumption:
Rotary engines consume a small amount of oil as part of their lubrication system; checking oil levels frequently is crucial.
NHTSA Rating Era:
Safety standards and testing protocols were less stringent than today; no formal star ratings.
Braking System:
Front disc brakes, rear drum brakes. Dual-circuit hydraulic system.
Steering Features:
Recirculating ball steering, with optional power assist.
Seat Belts:
Lap and shoulder belts (front), lap belts (rear).
Construction:
Unibody construction with crumple zones (typical for the era).
Engine Oil Change:
Typically every 3,000 miles (4,800 km) or 3 months.
Oil Filter Replacement:
At every engine oil change.
Air Filter Replacement:
Every 15,000 miles (24,000 km) or as needed based on conditions.
Coolant Change:
Every 24,000 miles (38,000 km) or 24 months.
Engine Oil Type:
API SG or higher, SAE 10W-30 or 10W-40 (consult manual for specific viscosity recommendations based on temperature).
Coolant Type:
Ethylene glycol based antifreeze (50/50 mixture with distilled water).
Brake Fluid Type:
DOT 3 or DOT 4.
Transmission Fluid Manual:
API GL-4 SAE 75W-90 or 80W-90 gear oil.
Transmission Fluid Automatic:
Dexron III (or equivalent) automatic transmission fluid.
Differential Fluid:
API GL-5 SAE 80W-90 gear oil.
Common Wear Items:
Apex seals, side seals, oil seals, exhaust port seals, carburetor wear, starter motor brushes, clutch components.
Rotary Specific Concerns:
Overheating can be detrimental. Proper engine warm-up and cool-down are important. Carbon buildup in combustion chambers can affect performance.
Electrical Quirks:
Older wiring harnesses can degrade, leading to intermittent electrical issues. Corrosion on terminals.
Mazda Rotary Pioneer:
Mazda was a pioneer in rotary engine technology, acquiring the patent from NSU Motorenwerke AG. The RX series solidified their reputation for this unique propulsion.
Predecessor:
Mazda R100 (Cosmo Sport was earlier, but RX-2 was a distinct lineage).
Successor:
Mazda RX-3 (Savanna) and later RX-7.
Production Years Worldwide:
1971-1978 (as RX-2 and its Capella Rotary variant)
Manufacturing Location:
Japan
