🏷️ Basic Information

Make:

Austin

Model:

MG Sprite / Midget

Year:

1970

Vehicle Code:

MG Sprite Mk.IV / Midget Mk.III

👋 Introduction

Target Owner:

Restorers, DIY mechanics, and owners seeking to maintain their classic Austin MG Sprite/Midget.

Advantage:

Provides genuine factory data, offering a significant cost saving over professional labor rates. Eliminates the need for worn-out physical manuals.

Usability:

Searchable functionality, printable pages for on-the-go use, clear step-by-step instructions with visual aids.

Content Value:

Essential resource for DIY maintenance, repairs, and restoration projects, imparting factory-trained technician knowledge.

📋 Manual Details

Primary Focus:

Repair and Maintenance

Scope:

All Styles Covered

Estimated Pages:

Hundreds

Type:

Factory Service Repair Manual

Authenticity:

Actual Genuine Factory Manuals (Not 3rd Party)

Language:

English

Format:

PDF Download

Delivery Method:

Digital Download (Post-Payment)

📖 Manual Coverage

Engine Service:

Yes

Transmission Service:

Yes

Brake System:

Yes

Wiring Diagrams:

Yes

Electrical System:

Yes

Suspension:

Yes

Steering:

Yes

Cooling System:

Yes

Fuel System:

Yes (Includes Fuel Injection/Fuel System)

Emission System:

Yes

Chassis Body:

Yes

Differential Drive:

Yes

Axle:

Yes

General Maintenance:

Yes

Periodic Lubrication:

Yes

Heater Air Conditioning:

Yes

Engine Control System:

Yes

Restraint System:

Yes

Interior:

Yes

Troubleshooting:

Yes (Advanced Guide Included)

Repair Procedures:

Yes (Step-by-Step, Detailed)

Rebuilds:

Yes

Refurbishment:

Yes

Restoration:

Yes

Diagnostics:

Yes (All Diagnostic Procedures Covered)

Maintenance Schedules:

Detailed periodic maintenance schedules provided.

Illustrations Diagrams:

Includes all necessary illustrations, drawings, and photos.

Depth:

Comprehensive Factory Level

Target Audience:

Professional Technicians and Mechanics, Owners

📊 Manual Specifications

Type:

PDF

Compatibility:

All PC Based Windows Operating Systems, Mac

Storage Options:

Save to Hard Drive, Burn to CD-ROM

Printability:

Print Entire Manual or Individual Pages Without Restriction

Resolution:

High Resolution

Type:

N/A (Digital Download)

Type:

N/A (Digital Download)

Reader:

Adobe PDF Reader

⚙️ Engine Specifications

Engine Type:

Inline 4-Cylinder

Displacement:

1275 cc (77.8 cu in)

Bore X Stroke:

2.78 in x 3.19 in (70.6 mm x 81.3 mm)

Compression Ratio:

8.8:1 (Typical)

Horsepower:

65 bhp @ 5500 rpm (Typical for 1275cc engine)

Torque:

72 lb-ft @ 3500 rpm (Typical for 1275cc engine)

Carburetion:

Twin SU HS4 Carburetors (Typical)

Fuel Type:

Unleaded Gasoline (Octane rating as per manual recommendations)

Ignition System:

Distributor-based ignition system

🔧 Transmission

Type:

4-Speed Manual

Type:

Not commonly available or specified for this model year

Gear Ratios:

Detailed in manual, e.g., 1st: 3.277:1, 2nd: 2.077:1, 3rd: 1.378:1, 4th: 1.000:1 (Typical, refer to manual for exact ratios)

Fluid Type:

GL-4 Gear Oil (e.g., EP 90 or equivalent)

Capacity:

Approximately 2.0 Liters (4.2 Pints) (Refer to manual for exact capacity)

📐 Dimensions

Length:

Approx. 151.5 inches (3848 mm)

Width:

Approx. 56.0 inches (1422 mm)

Height:

Approx. 48.2 inches (1224 mm)

Curb Weight:

Approx. 1500 - 1600 lbs (680 - 726 kg)

Wheelbase:

Approx. 80.0 inches (2032 mm)

🛡️ Safety Features

Crash Safety:

Era-appropriate safety standards; detailed information not typically available from modern rating agencies.

Brakes:

Front Disc Brakes, Rear Drum Brakes

Steering:

Rack and Pinion Steering

Seatbelts:

Standard lap belts, optional shoulder belts may be present or installable.

Restraint System:

Manual covers occupant restraint systems applicable to the era.

💡 Technology Features

Audio System:

Basic AM radio (optional), often replaced with aftermarket units.

Features:

Minimal driver assistance features, typical for vehicles of this era.

Features:

No integrated connectivity features; reliant on external devices.

🔧 Maintenance

Oil Change:

Every 3,000 miles or 6 months, whichever comes first (refer to manual for precise interval).

Tune Up:

As needed based on performance; ignition timing, carburetor adjustments, spark plugs, points, condenser are key elements.

Engine Oil:

API SF/CD rated 20W-50 or 20W-40 (verify with manual for specific ambient temperature ranges and updated recommendations).

Coolant:

50/50 mixture of Ethylene Glycol antifreeze and distilled water.

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid.

Common Problems:

Carburetor synchronization and tuning, oil leaks from crankshaft seals and gaskets, wear in suspension bushings, cooling system hoses, and electrical connections.

📚 Vehicle History

Marque:

MG, a British marque known for its sporty, lightweight two-seater cars.

Lineage:

The Sprite and Midget were essentially badge-engineered versions of the same car, originating from the Austin Healey Sprite Mk.III and MG Midget Mk.II respectively, evolving into their 1970 configurations.

Production Period:

The Mk.IV Sprite and Mk.III Midget were produced from late 1966/early 1967 through 1969/1970. The 1970 model year represents the culmination of this design phase.