🏷️ Basic Information Identification Make: Opel Model: Manta & GT Model Variant: GT 1900 Codes Product Code: OMGT1900-CWSRM-7075 👋 Introduction Market Position Positioning: The Opel Manta and GT 1900 were popular sporty coupes and sedans from Opel during the 1970s, known for their engaging driving dynamics and European styling. This manual serves the segment of classic car enthusiasts and DIY mechanics who maintain and restore these vehicles. Competitive Analysis Comparison: Competed with vehicles like the Ford Capri, Alfa Romeo GT series, and various other European sport coupes of the era. This manual provides detailed technical information often sought after by owners of these niche classic vehicles. Key Features Value Proposition: Offers significant cost savings for owners by enabling self-performed repairs and maintenance, coupled with detailed, easy-to-follow instructions and visual aids. Coverage Breadth: All models, engines, trims, and transmission types within the specified years, ensuring comprehensive support for a wide range of Manta and GT variants. 📋 Manual Details Coverage Areas Years Covered: 1970, 1971, 1972, 1973, 1974, 1975 Page Count Estimated Pages: Extensive (A-Z coverage implies several hundred pages) Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: Downloadable Digital Format (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, pistons, crankshaft, camshaft, timing, lubrication system, cooling system. Fuel System: Carburetor (e.g., Solex Zenith Stromberg), fuel pump, fuel lines, fuel tank, emissions control. Ignition System: Distributor, ignition coil, spark plugs, ignition timing, ignition system troubleshooting. Transmission: Manual transmission repair, clutch assembly, torque specifications, gearbox overhaul, automatic transmission (if applicable to GT 1900). Drivetrain: Rear axle, differential, driveshafts, universal joints, wheel bearings. Suspension: Front suspension (e.g., MacPherson struts, coil springs), rear suspension (e.g., live axle, leaf springs), shock absorbers, bushings, alignment. Steering: Steering column, steering box, tie rods, steering linkage, steering wheel removal/installation. Brakes: Front disc brakes, rear drum brakes, brake hydraulics, master cylinder, wheel cylinders, brake pads, brake shoes, brake lines, bleeding procedures. Electrical System: Battery, starter motor, alternator, wiring diagrams, lighting system, gauges, switches, fuses, relays, horn, ignition switch. Body And Chassis: Body panels, doors, hood, trunk, interior trim, seats, glass, weatherstripping, frame structure, rust repair techniques. Heating And Ventilation: HVAC system, heater core, blower motor, ducting, controls. Exterior: Bumpers, grille, emblems, exterior trim, mirrors, windshield wipers. Procedures Included Maintenance: Routine maintenance tasks, oil changes, filter replacements, fluid checks, spark plug replacement, tune-ups, lubrication points. Troubleshooting: Diagnostic procedures for common problems, symptom-based troubleshooting guides, electrical troubleshooting charts. Repair: Step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, brake component replacement, etc. Installation: Installation procedures for replacement parts and accessories. Specifications: Torque specifications, clearances, tolerances, fluid capacities, recommended lubricants. Wiring Diagrams: Detailed electrical wiring schematics for various systems. Technical Depth Depth: Comprehensive from basic maintenance to full engine and transmission rebuilds, including diagnostics and component-level repairs. 📊 Manual Specifications File Format Format: PDF Searchable: Yes (Likely text-searchable PDF) Print Quality Printability: High Quality, Printable (User selectable pages/chapters) Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) Compatibility Software Required: Adobe Reader (Free Download) Devices: All PC & MAC Computers, Tablets, Smartphones ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, SOHC (Camshaft located in cylinder head) Displacement: 1.9 Liters (1897 cc) Bore X Stroke: Typically around 84.7 mm x 85.0 mm Compression Ratio: Varies by model/market, commonly around 8.5:1 to 9.0:1 Horsepower Net: Approximately 90-100 HP (SAE Net) depending on carburetion and tuning Torque Net: Approximately 150-160 Nm (110-118 lb-ft) depending on carburetion and tuning Fuel System Carburetion: Single or dual barrel Downdraft carburetor (e.g., Solex 32 DIDTA, Zenith 36 IV, Stromberg 175 CD-2) Fuel Type: Unleaded gasoline (95 RON or higher recommended for optimal performance and longevity) Ignition System Ignition System: Breaker-point ignition system with centrifugal and vacuum advance Lubrication System Oil Capacity: Approximately 4.0 - 4.5 liters (4.2 - 4.8 US Quarts) with filter change Oil Specification: API SF/SG or equivalent, SAE 10W-40 or 20W-50 depending on climate Cooling System Coolant Capacity: Approximately 6.0 - 7.0 liters (6.3 - 7.4 US Quarts) Coolant Specification: 50/50 mix of ethylene glycol antifreeze and distilled water 🔧 Transmission Standard Type: 4-speed Manual Transmission Optional Type: 3-speed Automatic Transmission (less common on performance variants) Features Manual Gear Ratios: Specific ratios will be detailed in the manual, but typically designed for sporty acceleration. Transmission Fluid Manual Fluid Type: API GL-4 Gear Oil, SAE 80W or 80W-90 Automatic Fluid Type: Dexron-II or equivalent (if applicable) 📐 Dimensions Exterior Wheelbase: Manta: Approx. 2515 mm (99.0 in) / GT: Approx. 2428 mm (95.6 in) Length: Manta: Approx. 4160-4250 mm (163.8-167.3 in) / GT: Approx. 3980 mm (156.7 in) Width: Manta: Approx. 1610 mm (63.4 in) / GT: Approx. 1620 mm (63.8 in) Height: Manta: Approx. 1330-1350 mm (52.4-53.1 in) / GT: Approx. 1230 mm (48.4 in) Weights Curb...