1987 Porsche 924S Manual

The 1987 Porsche 924S is a front-engine, rear-wheel-drive sports car featuring a 2.5L inline-4 engine, 5-speed manual transmission, Bosch fuel injection, independent suspension, disc brakes, and classic Porsche styling. Below are key sections for specifications, operation, maintenance, troubleshooting, and technical details.

1. Vehicle Specifications 2. Controls and Instrumentation 3. Operating Instructions 4. Maintenance Schedule 5. Fluid Specifications 6. Electrical System 7. Brake System 8. Suspension and Steering 9. Engine and Transmission 10. Troubleshooting 11. Technical Data

Vehicle Specifications

Key components: 2.5L inline-4 engine, 5-speed manual transmission, rear-wheel drive, independent suspension.

SpecificationDescription
Engine2.5L inline-4, water-cooled
Power Output150 hp @ 5800 rpm
Torque142 lb-ft @ 3000 rpm
Transmission5-speed manual
DrivetrainRear-wheel drive
BrakesFront and rear disc brakes
SuspensionIndependent front and rear
Fuel SystemBosch K-Jetronic fuel injection
Fuel Capacity16.4 gallons
Curb Weight2,800 lbs

Controls and Instrumentation

Dashboard layout: Speedometer, tachometer, fuel gauge, temperature gauge, warning lights.

  1. Ignition switch: Located on steering column
  2. Gear shift pattern: Standard H-pattern with reverse
  3. Parking brake: Hand-operated lever between seats
  4. Climate controls: Heating and ventilation system
  5. Lighting controls: Headlights, turn signals, hazard lights

WARNING! Always fasten seat belts before driving. Ensure all controls are functioning properly.

Operating Instructions

Starting procedure and daily operation guidelines.

  1. Starting engine: Depress clutch, turn ignition key
  2. Shifting gears: Smooth clutch engagement recommended
  3. Braking: Progressive pressure for optimal stopping
  4. Parking: Engage parking brake on inclines
  5. Fueling: Use premium unleaded gasoline only

CAUTION! Allow engine to warm up before aggressive driving. Avoid lugging engine in high gears.

Maintenance Schedule

Fluid Specifications

Recommended fluids and capacities for optimal performance.

Fluid TypeSpecificationCapacity
Engine OilSAE 10W-40 Synthetic5.3 quarts
Transmission Fluid75W-90 GL-42.1 quarts
CoolantPorsche-approved antifreeze10.6 quarts
Brake FluidDOT 4As needed
Power SteeringATF Dexron II1.1 quarts

Electrical System

12-volt electrical system with alternator and battery specifications.

  1. Battery: 12V, 60Ah, negative ground
  2. Alternator: 65-amp output
  3. Fuses: Located in dashboard and engine compartment
  4. Lighting: Halogen headlights, standard bulbs
  5. Charging system: Voltage regulator integrated

Tip: Check battery terminals for corrosion monthly.

Brake System

Four-wheel disc brakes with dual-circuit hydraulic system.

  1. Front brakes: Ventilated discs, single-piston calipers
  2. Rear brakes: Solid discs, single-piston calipers
  3. Brake pads: Replace when thickness below 3mm
  4. Brake fluid: Replace every 2 years
  5. Parking brake: Adjust cable tension as needed

WARNING! Brake system is critical for safety. Inspect regularly.

Suspension and Steering

Independent suspension with rack-and-pinion steering.

  1. Front suspension: MacPherson struts with lower control arms
  2. Rear suspension: Trailing arms with torsion bars
  3. Steering: Rack-and-pinion, power-assisted
  4. Wheel alignment: Check every 15,000 miles
  5. Tire pressure: 32 psi front, 36 psi rear (cold)

Engine and Transmission

Detailed information about powertrain components.

  1. Engine code: Type 2.5L 4-cylinder
  2. Compression ratio: 9.5:1
  3. Valvetrain: SOHC, belt-driven
  4. Clutch: Single dry plate, hydraulic operation
  5. Gear ratios: 5-speed manual with overdrive
  6. Final drive ratio: 3.89:1

CAUTION! Timing belt replacement critical at 60,000 miles.

Troubleshooting

SymptomPossible CauseCorrective Action
Engine won't startFuel, spark, or battery issueCheck fuel pump, spark plugs, battery charge
Poor performanceClogged filter or ignition issueReplace air filter, check spark plugs and wires
Brake vibrationWarped rotorsResurface or replace brake rotors
Electrical issuesAlternator or batteryTest charging system, check battery voltage
Transmission noiseLow fluid or worn gearsCheck fluid level, inspect for wear

Service: Contact authorized Porsche service center for major repairs.

Technical Data

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