🏷️ Basic Information Identification Make: Opel Model: Manta GT Model Variant: 1900 GT Production Years Covered: 1968, 1969, 1970, 1971, 1972, 1973 Codes Chassis Code: Abody (Opel Rekord/Olympia Rekord platform) 👋 Introduction Market Position Target Audience: Do-it-yourself enthusiasts and professional mechanics working on Opel Manta GT models from 1968-1973. Competitive Analysis Advantage: Provides a complete, factory-level resource in an easily accessible and affordable digital format, superior to older paper manuals. Key Features Content Richness: Hundreds of pages of detailed instructions, hundreds of photos and illustrations for clear guidance. Convenience: Accessible on any Windows or Mac computer, smartphone, or tablet via a web browser; allows for selective printing. Value Proposition: Enables significant cost savings by empowering owners to perform repairs and maintenance themselves, reducing reliance on expensive mechanic labor. 📋 Manual Details Coverage Areas Documentation Scope: Complete factory service and repair information Page Count Estimated Page Count: Hundreds of pages (specific number not provided, but implies comprehensive detail) Manual Type Type: Service Repair Manual / Workshop Manual Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Management: Engine Service/Repair, Fuel Injection, Fuel System, Emission System, Engine Control System Drivetrain: Transmission Service/Repair, Differential/Drive, Axle Chassis And Body: Brake System, Suspension, Steering, Chassis/Body, Interior, Heater/Air Conditioner Electrical And Electronics: Wiring Diagram, Electrical System, Restraint System Procedures Included Maintenance And Tune Up: General Maintenance, Periodic Lubrication, Standard Maintenance Procedures Troubleshooting And Diagnostics: Troubleshooting, Diagnostic Procedures, Fault Finding Repair And Rebuild: Complete Disassembly and Reassembly Instructions, Component Repair, Overhaul Procedures Technical Depth Depth: Detailed, step-by-step instructions with hundreds of photos and illustrations, suitable for both DIYers and experienced mechanics. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text within PDF for efficient information retrieval. Print Quality Printability: Fully printable; users can print the entire manual or specific pages. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format, eliminates need for physical paper wear) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Cylinder OHV (Overhead Valve) Displacement Liters: 1.9 L (1897 cc) Engine Code Examples: 19S (for 1.9L engine) Performance Horsepower Range Approx: 90-105 hp (depending on tune and specific year/market) Torque Range Approx: 145-155 Nm (approx. 107-114 lb-ft) at ~3000-3500 RPM Fuel System Fuel Delivery: Carburetor (e.g., Zenith Stromberg, Solex) for most standard models; Fuel Injection available on specific GT variants/later models. 🔧 Transmission Standard Type: 4-speed Manual Optional Type: 3-speed Automatic (e.g., GM 'Turbo-Hydramatic' 350 variant) Features Clutch: Single dry plate, hydraulically operated 📐 Dimensions Exterior Body Styles: 2-door Coupe Wheelbase Mm: 2490 mm (approx. 98.0 inches) Length Mm: 4245 mm (approx. 167.1 inches) Width Mm: 1675 mm (approx. 66.0 inches) Height Mm: 1335 mm (approx. 52.6 inches) Weights Curb Weight Kg: Approximately 1050 - 1150 kg (2315 - 2535 lbs), depending on specification. 🛡️ Safety Features Ratings Safety Standards: Designed to meet European safety standards of the era. Specific crash test ratings from modern organizations are not applicable to this vintage vehicle. Active Features Braking System: Front Disc Brakes, Rear Drum Brakes Passive Features Seat Belts: Lap belts standard, three-point retractable seat belts often optional or fitted to later models/GT variants. 💡 Technology Features Infotainment Audio System: Typically a period-correct AM/FM radio, often with a single speaker. Cassette tape players were an aftermarket addition. Driver Assistance Features: No electronic driver assistance systems as understood today (e.g., ABS, traction control, airbags). Focus on mechanical feedback and driver engagement. Connectivity Features: N/A - No modern connectivity features. 🔧 Maintenance Service Intervals Oil Change: Recommended every 5,000 - 7,500 km (3,000 - 4,500 miles) or 6-12 months, depending on driving conditions. Tune Up: Spark plugs, ignition timing, and carburetor adjustment typically every 15,000 - 20,000 km (9,000 - 12,000 miles). Fluid Specifications Engine Oil: API SF/CD or SG/CD classification, SAE 10W-40 or 15W-40 depending on climate. Capacity approx. 4.5 Liters (with filter). Transmission Fluid Manual: GL-4 Gear Oil, SAE 75W-90 or 80W-90. Capacity approx. 1.8 Liters. Transmission Fluid Automatic: Dexron III (or equivalent GM specification for era). Capacity approx. 3.5 Liters. Coolant: 50/50 mix of ethylene glycol antifreeze and distilled water. Capacity approx. 7.5 Liters. Brake Fluid: DOT 3 or DOT 4. Known Issues Bodywork: Rust corrosion is a common issue, particularly in wheel arches, sills, door bottoms, and around window seals. Engine: Potential for oil leaks from seals and gaskets, wear in valve guides, and carburetor tuning issues. Ignition system maintenance is crucial. Suspension And Steering: Wear in ball joints, tie rod ends, and bushings can lead to play and poor handling. Steering box adjustments may be needed. 📚 Vehicle History Brand Heritage Parent Company: Opel was a German automobile manufacturer, a subsidiary of General Motors (GM) from 1929 until 2017. Model Evolution Development Basis: The Manta A was developed as a sportier, coupe version of the Opel Rekord and Olympia Rekord sedans,...