🏷️ Basic Information Identification Make: Austin Healey / MG Model: Midget / Sprite Model Generations Covered: Austin Healey Sprite Mark II & III, MG Midget Mark I & II Chassis...
Troubleshooting common faults, diagnostic procedures for ignition and fuel systems
Technical Depth
Depth:
Comprehensive: from routine maintenance to complete engine and component rebuilds, including detailed specifications and diagrams.
📊 Manual Specifications
File Format
Document Format:
PDF
Software Requirement:
Adobe Acrobat Reader
Extraction Requirement:
Requires ZIP extraction software (WinZip, WinRAR, or built-in OS tools)
Print Quality
Printability:
All pages are printable
Binding Type
Binding:
Not Applicable (Digital format)
Paper Type
Paper Type:
Not Applicable (Digital format)
⚙️ Engine Specifications
Primary Engine
948Cc Engine:
948 cc OHV inline-4 cylinder. Bore: 62.9 mm (2.48 in), Stroke: 76.2 mm (3.00 in). Carburetor: Usually a single SU HS2 or Zenith/Solex.
1098Cc Engine:
1098 cc OHV inline-4 cylinder. Bore: 64.77 mm (2.55 in), Stroke: 83.72 mm (3.30 in). Carburetor: Typically single or twin SU HS2, or Zenith/Solex.
Performance
948Cc Horsepower:
Approx. 46-50 bhp (gross)
1098Cc Horsepower:
Approx. 55-60 bhp (gross)
Fuel System
Fuel Delivery:
Fuel pump (mechanical) feeding SU or Zenith/Solex carburetors.
Carburetor Types:
SU HS2 (most common), Zenith/Solex.
🔧 Transmission
Standard
Gearbox Type:
Four-speed manual gearbox with synchromesh on top three gears (later models may have full synchro).
Optional
Optional Gearbox:
Not typically offered with automatic transmission during this period for these models.
Features
Clutch Type:
Dry, single plate, hydraulically actuated
📐 Dimensions
Exterior
Wheelbase:
Approx. 84 inches (2134 mm)
Overall Length:
Approx. 140 inches (3556 mm)
Overall Width:
Approx. 53 inches (1346 mm)
Overall Height:
Approx. 49 inches (1245 mm) to top of windscreen
Weights
Curb Weight:
Approx. 1500-1600 lbs (680-725 kg) depending on model and equipment
🛡️ Safety Features
Ratings
Crash Test Data:
No formal crash test data available from modern standards due to era of manufacture. Designed to earlier safety regulations.
Active Features
Braking System:
Hydraulic drum brakes on all wheels, with front discs introduced on Sprite Mk II/Midget Mk I and standard on later models.
Passive Features
Seatbelts:
Optional or standard depending on market and model year. Lap belts are most common.
Windscreen:
Safety glass windscreen (laminated) standard on later models, early might have toughened glass.
💡 Technology Features
Infotainment
Audio System:
Optional radio, typically aftermarket fitment. Basic audio capabilities.
Driver Assistance
Driver Aids:
None. These vehicles predate modern driver assistance systems.
Connectivity
Connectivity Features:
None. Focus is on mechanical function.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000-5,000 miles (or 6 months), consult manual for specific recommendations.
Grease Points:
Regular lubrication of suspension kingpins, trunnions, and steering joints is critical.
Fluid Specifications
Engine Oil Type:
SAE 20W-50 or SAE 30 (API SE/CD or equivalent) is generally recommended. Consult manual for precise grade and capacity.
Coolant Type:
Ethylene Glycol based antifreeze mixed with distilled water (typically 50/50 ratio).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic fluid (check reservoir cap).
Gearbox Oil Type:
GL-4 80W-90 gear oil or equivalent.
Rear Axle Oil Type:
EP (Extreme Pressure) gear oil, typically SAE 90.
Known Issues
Common Failures Engine:
Oil leaks from main seals, rocker cover gasket. Overheating due to aging radiators/thermostats. Carburetor tuning issues.
Common Failures Chassis:
Wear in suspension bushes, trunnions, and kingpins leading to looseness and poor handling. Rust in sills, wheel arches, and floor pans. Brake system leaks.
Common Failures Electrical:
Aging wiring looms causing intermittent faults, particularly in lighting and ignition circuits.
📚 Vehicle History
Brand Heritage
Parent Company:
British Motor Corporation (BMC), later British Leyland
Model Evolution
Sprite Evolution:
Austin Healey Sprite Mk II (1961-1964) introduced styling changes. Mk III (1964-1966) featured updated styling and improved engines.
Midget Evolution:
MG Midget Mk I (1961-1964) shared mechanicals with Sprite Mk II. Mk II (1964-1966) shared mechanicals and styling with Sprite Mk III.
Production
Production Period:
Covered models produced approximately from 1961 to 1966.
🏆 Awards & Recognition
Recognitions
Historical Significance:
Iconic British sports cars, celebrated for their affordability, fun-to-drive nature, and racing heritage.
Motorsport Legacy:
Successfully competed in various forms of motorsport, including endurance races like the 24 Hours of Le Mans and Sebring in their respective classes.
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