🏷️ Basic Information Identification Make: Opel Model: Manta Trim: GT Engine Variant: 1900 Model Years Covered: 1970-1975 Codes Chassis Code: Opel 1450, 1470 👋 Introduction Market Position Segment: Compact/Sports Coupe Target Audience: Enthusiasts, classic car owners, mechanics specializing in vintage European cars. Competitive Analysis Key Competitors: Ford Capri, Toyota Celica, Datsun 240Z, BMW 2002. Key Features Vehicle Design Philosophy: Sporty, driver-focused coupe with distinctive styling. Key Features Manual Professional Standard: Identical to manuals used by factory-trained technicians. Detail Level: High degree of detail, enabling complex repairs. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Secondary Coverage: Troubleshooting, Servicing, Diagnostics Page Count Estimated Pages: Hundreds (Specific count not provided, but described as extensive) Manual Type Type: Factory Service Repair Workshop Manual Language Language: English (Implied by product description and common availability for this era of vehicles) Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine mechanical (assembly, disassembly, tuning), fuel system (carburetor, fuel lines), ignition system, cooling system, lubrication system. Drivetrain: Clutch, transmission (manual), propeller shaft, rear axle assembly, differential. Chassis: Front suspension, rear suspension, steering system, braking system (front discs, rear drums), wheels and tires. Electrical: Wiring diagrams, lighting system, instrumentation, starter, alternator, battery, ignition, accessories. Body: Body construction, exterior panels, doors, windows, interior trim, seats, bumpers. Procedures Included Maintenance: Routine servicing, oil changes, filter replacements, tune-ups, fluid checks and replacements. Repair: Engine rebuilds, transmission overhaul, suspension component replacement, brake system repair, electrical component diagnosis and replacement, body panel repair. Troubleshooting: System-specific diagnostic procedures, fault finding guides, common problem identification. Technical Data: Torque specifications, clearance measurements, timing settings, fluid capacities, electrical resistance values. Technical Depth Depth: Comprehensive (Covers all repair, servicing, and troubleshooting procedures for professional mechanics). Illustrations: Detailed photos and exploded diagrams 📊 Manual Specifications File Format Format: PDF Searchability: Likely searchable text (standard for most PDF manuals) Print Quality Printability: Yes, individual pages or entire manual Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Licensing Usage License: Unlimited use on multiple devices, lifetime access Updates: No expiry, no renewal fees ⚙️ Engine Specifications Primary Engine Engine Code Family: Opel CIH (Camshaft in Head) family Displacement Cc: 1897 (1.9 Liters) Cylinders: 4 Bore Stroke Mm: 95.0 x 82.0 (approximate) Compression Ratio: 8.0:1 or 8.5:1 (depending on exact variant and market) Performance Horsepower Ps: 90-105 PS (DIN) at 5000-5200 rpm (approximate, varies by tuning and market) Torque Nm: 140-155 Nm at 2800-3200 rpm (approximate) Fuel System Carburetion: Single Solex 32/32 DIDTA or Zenith 36/36 INAT downdraft carburetor (for GT 1900) Fuel Type: Unleaded gasoline (later models) / Leaded gasoline (earlier models), Octane rating typically 95-98 RON 🔧 Transmission Standard Type: 4-speed Manual (standard on GT 1900) Optional Type: 3-speed Automatic (optional on some variants, less common on GT 1900) Features Rear Wheel Drive: Yes Gear Ratios: Specific ratios detailed within the manual. 📐 Dimensions Exterior Length Mm: 4165 Width Mm: 1630 Height Mm: 1325 Wheelbase Mm: 2490 Weights Curb Weight Kg: 1010 - 1070 (approximate, depending on equipment) 🛡️ Safety Features Ratings Crash Test Standards: Era-specific safety standards; no modern NCAP ratings. Active Features Brakes: Front disc brakes (Girling or Dunlop), rear drum brakes. Steering Type: Recirculating ball, non-assisted. Passive Features Seatbelts: Standard front seatbelts (often lap belts), optional inertia reel belts. Body Structure: Unitary body construction with reinforced safety cage elements typical of the era. 💡 Technology Features Infotainment Audio System: Optional AM/FM radio, often with a single speaker. Driver Assistance Driver Aids: None (This era of vehicle predates modern electronic driver assistance systems). Connectivity Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change Km: 5,000 - 7,500 km (or 6-12 months), depending on driving conditions. Specific recommendations in manual. Ignition Tune Up: Recommended every 10,000 - 15,000 km (points, condenser, spark plugs). Fluid Specifications Engine Oil: API SF/CD rated, SAE 10W-40 or 20W-50 recommended. Capacity approx. 4.5 Liters. Coolant: 50/50 mix of ethylene glycol antifreeze and water. Capacity approx. 7.5 Liters. Transmission Oil: Manual: GL-4 rated gear oil (e.g., SAE 75W-90 or 80W-90). Automatic: Dexron II or equivalent. Brake Fluid: DOT 3 or DOT 4 glycol-based brake fluid. Known Issues Rust Corrosion: Common issue in floor pans, wheel arches, and sills due to age and environmental factors. Carburetor Issues: Wear and tuning difficulties with Solex/Zenith carburetors, requiring skilled adjustment. Electrical Gremlins: Age-related issues with wiring harnesses, switches, and grounds. Suspension Wear: Bushings, ball joints, and shock absorbers can wear over time, affecting handling. 📚 Vehicle History Brand Heritage Opel History: Opel, a German automotive manufacturer founded in 1862, has a long history of producing reliable and accessible vehicles, becoming a significant player in the European market. Model Evolution Manta Origins: The Opel Manta was launched in 1970 as Opel's answer to the Ford Capri, aiming for a sportier image and offering a range of engines and trim levels. Manta...