Dual Hitachi SU-type carburetors (HJG 46W) for the U20 engine
Engine Control System
Ignition System:
Distributor-based ignition system
Cooling System
Type:
Water-cooled, pressurized system
Lubrication
Oil Capacity Approx:
4.5 liters (4.8 US qt) with filter change
🔧 Transmission
Standard
Type:
5-speed manual transmission
Features
Gear Ratios:
Specific gear ratios available within the manual
Fluid Specifications
Transmission Fluid:
GL-4 Hypoid Gear Oil (e.g., SAE 80W-90, specific Datsun recommendation within manual)
📐 Dimensions
Exterior
Body Style:
2-seater convertible (roadster), also available as a 2+2 coupe (not covered by this manual)
Weights
Curb Weight Approx:
960-1040 kg (2116-2293 lbs) depending on specific configuration
🛡️ Safety Features
Ratings
Crash Test Data:
N/A (Vehicles of this era did not undergo standardized crash testing as they do today)
Passive Features
Seat Belts:
Likely lap belts, shoulder belts may have been optional or dealer-installed on some models.
💡 Technology Features
Infotainment
Audio System:
Likely an AM radio, possibly an optional AM/FM radio
Driver Assistance
Features:
None (Vehicles of this era predated modern driver assistance systems)
🔧 Maintenance
Service Intervals
Oil Change Interval Approx:
Every 3,000 miles or 3 months (typical for the era, specific recommendation in manual)
Tune Up Interval Approx:
Every 12,000-15,000 miles (includes spark plugs, points, timing adjustment)
Fluid Specifications
Engine Oil:
API SF/CD or SE/CC equivalent, SAE 10W-30 or 20W-50 (check manual for precise recommendation based on climate)
Coolant:
Ethylene glycol-based antifreeze with water (50/50 mix typical)
Brake Fluid:
DOT 3 or DOT 4 (check manual for specific type, ensure sealed container)
Known Issues
Common Wear Items:
Carburetor tuning and rebuilding, ignition system components (points, condenser, coil), clutch wear, brake system components, suspension bushings, rust (depending on climate and care).
📚 Vehicle History
Brand Heritage
Manufacturer Origin:
Japan
Model Evolution
Fairlady Lineage:
Part of Datsun's sports car lineage, evolving from earlier models like the Fairlady SP/SR series.
Production
Production Period Sr311:
1965-1970
Key Engine Variants:
SR20 (1.9L, 96 hp) and U20 (2.0L, 135-150 hp)
🏆 Awards & Recognition
Recognitions
Automotive Press:
Highly regarded for its performance and styling in its era, often compared favorably to contemporary European sports cars.
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