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Porsche

1978-1981 Porsche 911 Carrera Turbo Technical Specifications

1978-1981 Porsche 911 Carrera Turbo Technical Specifications

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Vehicle data plateRef 295699
Brand
Porsche
Vehicle
Cars
Models covered
911, 911 Carrera Turbo
Years
1978, 1979, 1980, 1981
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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🏷️ Basic Information
Identification
Make:
Porsche
Model:
911 Carrera Turbo
Model Variant:
930 Turbo (or 'Turbo Carrera')
Year Range:
1978-1981
👋 Introduction
Market Position
Positioning:
The ultimate performance variant of the iconic Porsche 911, targeting enthusiasts and collectors seeking the pinnacle of air-cooled 911 engineering.
Competitive Analysis
Competitors:
Ferrari 308 GTB/GTS, Lamborghini Urraco, Chevrolet Corvette C3 (Z07/ZR1 variants for performance).
Key Features
Performance Focus:
Turbocharging technology for significant power increase, advanced aerodynamics for stability.
Handling:
Legendary 911 handling characteristics enhanced by wider tires and stiffer suspension.
Exclusivity:
Limited production numbers, highly desirable classic sports car.
📋 Manual Details
Coverage Areas
Manual Type:
Technical Specifications and Repair Manual
Language:
English
Format:
Digital Download (PDF)
📖 Manual Coverage
Systems Covered
Engine:
3.0L & 3.3L Turbocharged Flat-Six (930 engine family)
Fuel System:
Bosch K-Jetronic fuel injection, turbocharger system, intercooler
Transmission:
4-speed and 5-speed manual transaxle (G50 not applicable for this range)
Brakes:
Hydraulic disc brakes (front and rear), braking system components
Suspension:
Torsion bar front suspension, trailing arm rear suspension, shock absorbers, anti-roll bars
Steering:
Rack and pinion steering system
Electrical System:
Ignition system, charging system (alternator), starting system (starter), lighting, instrumentation, wiring diagrams
Body And Chassis:
Body panels, structural components, aerodynamics, interior trim, glass
Procedures Included
Maintenance:
Scheduled maintenance intervals, fluid changes, filter replacements, lubrication points
Troubleshooting:
Diagnostic procedures for common faults, electrical system diagnostics, engine performance issues
Repair:
Engine overhaul, transmission repair, brake system rebuild, suspension component replacement, electrical component repair
Adjustments:
Valve adjustments, ignition timing, fuel system adjustments, suspension alignment
Torque Specifications:
Detailed torque values for all critical fasteners
Technical Depth
Depth:
Comprehensive, from routine maintenance to full engine and transmission rebuilds
Diagnostics:
Advanced diagnostic procedures, including specific tests for K-Jetronic and turbocharging systems
Wiring Diagrams:
Detailed, color-coded electrical system wiring diagrams
📊 Manual Specifications
File Format
File Type:
PDF
Searchable Text:
Yes
Printable:
Yes (individual pages or full document)
Page Count:
Estimated 500-800 pages (typical for workshop manuals of this era and scope)
Print Quality:
High-resolution scans of original factory documentation
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Type:
Air-cooled, horizontally opposed (flat) six-cylinder
Displacement 3.0:
2994 cc (182.7 cu in)
Displacement 3.3:
3291 cc (200.8 cu in)
Bore X Stroke 3.0:
95.0 mm x 70.4 mm
Bore X Stroke 3.3:
98.0 mm x 70.4 mm
Performance
Horsepower 3.0:
260 PS (191 kW; 256 hp) at 5500 rpm
Horsepower 3.3:
300 PS (221 kW; 296 hp) at 5500 rpm (U.S. spec: 273 hp due to emissions)
Torque 3.0:
343 Nm (253 lb-ft) at 4000 rpm
Torque 3.3:
412 Nm (304 lb-ft) at 4000 rpm (U.S. spec: 343 lb-ft)
Fuel System
Injection System:
Bosch K-Jetronic (CIS - Continuous Injection System)
Turbocharger:
Single turbocharger (e.g., KKK K27 for later models)
Intercooler:
Air-to-air intercooler (standard on 3.3L models)
Compression Ratio 3.0:
7.0:1
Compression Ratio 3.3:
7.5:1
Fuel Type:
Premium Unleaded Gasoline
🔧 Transmission
Standard
Type:
Manual Transaxle
Gears:
4-speed (early 1976-1977 930 models) / 4-speed (1978-1981 models) / 5-speed available on some export models and later 930s, but 4-speed is most common for this specific range provided.
Optional
Type:
Not applicable (primarily manual only for this generation)
Features
Clutch:
Single dry plate clutch
Gear Ratios:
Specific ratios detailed in the manual (vary by model year and gearbox type)
Final Drive:
Limited-slip differential (often optional or standard on Turbo)
📐 Dimensions
Exterior
Length:
Approx. 4215 mm (165.9 in)
Width:
Approx. 1720 mm (67.7 in)
Height:
Approx. 1310 mm (51.6 in)
Wheelbase:
Approx. 2270 mm (89.4 in)
Weights
Curb Weight:
Approx. 1140-1210 kg (2513-2668 lb)
Gross Vehicle Weight Rating:
Varies by model, consult manual
🛡️ Safety Features
Ratings
Crash Testing:
NHTSA/Euro NCAP data from this era is limited; focus on passive safety features designed by Porsche.
Active Features
Brakes:
Power-assisted disc brakes with larger rotors and improved cooling for Turbo models.
Suspension Tuning:
Stiffer springs and dampers, larger anti-roll bars for improved stability and handling.
Passive Features
Chassis Construction:
Reinforced unibody construction, crumple zones.
Seat Belts:
Three-point seat belts.
Steering Column:
Collapsible steering column.
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM radio with cassette player (optional, often replaced with aftermarket units).
Driver Assistance
ABS:
Anti-lock Braking System (ABS) became available on later models within this range, though not standard on all.
Cruise Control:
Optional cruise control system on some models.
Connectivity
Early Features:
Limited connectivity by modern standards; focus on analog gauges and mechanical controls.
🔧 Maintenance
Service Intervals
Oil Change:
Every 5,000-10,000 km (3,000-6,000 miles) or annually, depending on usage. Oil filter change with every oil change.
Major Service:
Every 20,000-30,000 km (12,000-18,000 miles) for tune-ups, inspections, and component checks.
Valve Adjustment:
Recommended at major service intervals or as per manual (periodic checks are crucial).
Fluid Specifications
Engine Oil:
High-quality synthetic or semi-synthetic oil meeting Porsche's specifications (e.g., SAE 20W-50 or 15W-50, specific API ratings as per manual).
Transmission Oil:
GL-4 or GL-5 gear oil of appropriate viscosity (e.g., SAE 75W-90 or 80W-90).
Brake Fluid:
DOT 3 or DOT 4 high-performance brake fluid.
Coolant:
N/A (Air-cooled engine), but for intercooler system and other components, specific coolants may be listed if applicable to specific configurations.
Known Issues
Engine Management:
K-Jetronic system can require expert calibration and maintenance; issues with air flow meter, fuel distributors, and injectors.
Turbocharger:
Turbocharger wear, oil leaks, wastegate actuator issues, intercooler seal degradation.
Suspension:
Wear in rubber bushings, torsion bar fatigue, shock absorber failure, potential for rear spring plate issues.
Brakes:
Brake system wear, especially on early models; potential for caliper issues and fluid leaks.
Gearbox:
Synchro wear, shifting issues on older transmissions, potential clutch wear.
Rust:
Susceptible to rust in typical areas like wheel arches, sills, and front luggage compartment floor.
📚 Vehicle History
Brand Heritage
Legacy:
Porsche's reputation for engineering excellence, motorsport success, and performance vehicles dating back to the 1930s.
Model Evolution
911 Development:
The 911 Carrera Turbo (930) was developed from the successful 911 platform, incorporating turbocharging for enhanced performance, inspired by motorsport.
930 Introduction:
Introduced in 1975, the 930 Turbo became known for its potent acceleration and challenging handling due to the turbo lag and rear-engine weight distribution.
Production
Manufacturing Location:
Stuttgart, Germany
Production Years:
1975-1989 (930 generation)

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