🏷️ Basic Information

Make:

Porsche

Model:

924

Product Name:

Porsche 924 Engine Workshop Manual

Product Code:

P924EW01

👋 Introduction

Segment:

Entry-level Sports Coupe / Gran Tourer

Original Intent:

To offer a more accessible and practical Porsche model

Competitors:

Toyota Celica, Mazda RX-7 (early models), Ford Capri, Datsun 280ZX

Design Philosophy:

Transaxle layout for weight distribution, front-engine, rear-wheel drive

Unique Selling Points:

Porsche engineering and brand prestige at a lower price point, comfortable touring capabilities

📋 Manual Details

Primary Focus:

Engine Mechanical and Electrical Systems

Secondary Focus:

Fuel, Ignition, Cooling, Lubrication, Emission Control

Estimated Pages:

350-450

Type:

Workshop Manual / Service Manual / Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine Assembly, Cylinder Head, Crankshaft, Connecting Rods, Pistons, Camshaft, Timing Belt/Chain, Valve Train, Oil Pump, Flywheel

Engine Management:

Fuel Injection System (CIS-E), Ignition System, Idle Control System, Emission Control Systems (Air Injection, EGR)

Cooling System:

Radiator, Fan, Water Pump, Thermostat, Hoses, Coolant Flow

Lubrication System:

Oil Pump, Oil Filter, Oil Galleries, Oil Pressure

Exhaust System:

Exhaust Manifold, Catalytic Converter (if applicable), Muffler, Pipes

Disassembly Assembly:

Complete engine rebuild procedures, component removal and installation

Maintenance:

Routine servicing, fluid changes, filter replacements, spark plug replacement, timing belt replacement

Diagnostics:

Troubleshooting guides for common engine faults, diagnostic flowcharts, testing procedures for fuel and ignition components

Adjustments:

Valve adjustment, ignition timing adjustment, fuel pressure adjustment, idle speed adjustment

Special Tools:

Identification and usage of specialized tools required for engine repair

Depth Level:

Comprehensive Rebuild and Overhaul

Detail Level:

Detailed torque specifications, clearances, and tolerances for all engine components

📊 Manual Specifications

PDF Quality:

High-resolution scans with searchable text (OCR applied where possible)

Printability:

Printable pages for use in workshop environment

Image Clarity:

Clear, legible diagrams and illustrations

Binding:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Code:

M44.01 (Early 924), M44.02 (924 Lux/Premium), M44.03 (924 Turbo)

Configuration:

Inline-4 Cylinder, Front-mounted, Transverse (for some early models, longitudinal for later models and turbo)

Displacement:

2.0 Liters (1984 cc)

Bore X Stroke:

84.5 mm x 88.0 mm

Compression Ratio:

8.5:1 (Naturally Aspirated), 7.5:1 (Turbo)

Horsepower Naturally Aspirated:

110 hp @ 5500 rpm (DIN)

Torque Naturally Aspirated:

130 lb-ft @ 3500 rpm (DIN)

Horsepower Turbo:

143 hp @ 5500 rpm (DIN) - 924 Turbo (931)

Torque Turbo:

195 lb-ft @ 3500 rpm (DIN) - 924 Turbo (931)

Fuel Delivery Naturally Aspirated:

Bosch K-Jetronic Mechanical Fuel Injection (CIS)

Fuel Delivery Turbo:

Bosch CIS-E Electronic Fuel Injection (with Lambda control)

Recommended Fuel:

Unleaded 91 RON (for naturally aspirated), Unleaded 95 RON (for turbo)

Ignition Type:

Distributorless Electronic Ignition (CDI on some models)

Block Material:

Cast Iron

Head Material:

Aluminum Alloy

Timing Drive:

Timing Belt (Belt-driven OHC)

🔧 Transmission

Type Standard:

4-Speed Manual Transaxle

Type Optional:

3-Speed Automatic Transaxle

Layout:

Transaxle (integrated gearbox and differential)

Manual Transmission Fluid:

API GL-4, SAE 75W-90 (or equivalent, e.g., Porsche Gear Oil G 052 171 A2)

Automatic Transmission Fluid:

Dexron III (or equivalent, e.g., Porsche ATF G 002 000)

📐 Dimensions

Length:

4215 mm (165.9 in)

Width:

1685 mm (66.3 in)

Height:

1270 mm (50.0 in)

Curb Weight Manual:

1190 kg (2624 lbs)

Curb Weight Automatic:

1210 kg (2668 lbs)

Wheelbase:

2400 mm (94.5 in)

Standard Wheel Size:

15 x 6J

Standard Tire Size:

195/65 HR 15

Bolt Pattern:

5 x 130 mm

🛡️ Safety Features

Historical Ratings:

Not extensively crash-tested by modern standards; early models focused on active safety

Braking System:

Front: Ventilated Discs (252mm), Rear: Drums (230mm)

Optional Brakes:

Front: Discs (252mm), Rear: Discs (230mm) on some later models or optional upgrade

Seatbelts:

3-point front seatbelts, lap belts in rear

Construction:

Reinforced chassis and door beams

💡 Technology Features

Original Infotainment:

Basic AM/FM radio, optional cassette player, analog gauges

Assistance Features:

Limited by era; focus on chassis dynamics and driver feedback.

Connectivity Features:

None by modern standards.

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles or 12 months, whichever comes first

Timing Belt Interval:

Every 45,000 - 60,000 miles or 4-5 years (critical maintenance item)

Spark Plug Replacement:

Every 15,000 - 20,000 miles

Air Filter Replacement:

Every 15,000 - 20,000 miles or as needed

Engine Oil Type:

API SG/SH, SAE 10W-40 or 15W-50 (depending on climate and usage, consult manual for specifics)

Engine Oil Capacity:

4.5 Liters (4.8 US Quarts) with filter change

Coolant Type:

Ethylene Glycol based antifreeze (Porsche approved, e.g., G 012 A8D A1 or equivalent)

Coolant Capacity:

7.0 Liters (7.4 US Quarts)

Common Problems:

Timing belt tensioner failure, fuel distributor issues (CIS), oil leaks (especially from rear main seal), idle control valve problems, door seal degradation, electrical gremlins, catalytic converter failure (if equipped).

Common Problems Turbo:

Turbocharger oil supply/return line issues, wastegate actuator problems, frequent spark plug fouling on early models.

📚 Vehicle History

Heritage:

Porsche, a renowned German manufacturer of high-performance sports cars and SUVs.

Development:

Developed in collaboration with Volkswagen; based on the VW EA831 engine and chassis.

Introduction Year:

1976

Variants:

924 (1976-1985), 924 Carrera GT (limited edition), 924 Turbo (931, 1979-1982), 924 S (1986-1988)

Production Years:

1976-1988

Manufacturing Location:

Neckarsulm, Germany (by Audi NSU)

🏆 Awards & Recognition

Industry Recognition:

Pioneering the entry-level Porsche segment, offering accessible performance and handling.

Owner Satisfaction:

Generally positive for handling and Porsche ownership experience, though reliability can vary with maintenance history.