Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPORSCHE1982928 AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL928 V8ENGINE SPECIFICATIONS
1982 Porsche 928 Automatic Trans
Engine Specifications
1982 Porsche 928 Automatic TransSECTION Engine Specifications
GENERAL SPECIFICATIONS
| Year | Displacement | Fuel System | HP@RPM | Torque Ft. Lbs.@RPM | Compr. Ratio | Bore | Stroke | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Cu. In. | cc | In. | mm | In. | mm | |||||
| 1982 | 273 | 4474 | Fuel Inj. | 220@4000 | 265@4000 | 9:1 | 3.74 | 95.0 | 3.11 | 78.9 |
VALVES
| Engine Size & Valve | Head Diam. In. (mm) | Face Angle | Seat Angle | Seat Width In. (mm) | Stem Diameter In. (mm) | Stem Clearance In. (mm) | Valve Lift In. (mm) | |
|---|---|---|---|---|---|---|---|---|
| 4474 cc | ||||||||
| Intake | 1.692 (43.00) | 45° | 45° | .067 (1.70) | .3498 (8.97) | .0010-.0020 (.030-.057) | .... | |
| Exhaust | 1.496 | 45° | 45° | .078 | .3490 | .0200-.0028 | .... | |
| (38.00) | (2.00) | (8.95) | (.050-.077) | .... | ||||
PISTONS, PINS, RINGS
| Engine | PISTONS | PINS | RINGS | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Clearance In. (mm) | Piston Fit In. (mm) | Rod Fit In. (mm) | Ring No. | End Gap In. (mm) | Side Clearance In. (mm) | |||||
| 4474 cc | .001-.002(1) (.024-.050) | Interference | .0007-.0012 (.019-.032) | No. 1 | .008-.015 (.20-.40) | .002-.003(2) (.050-.082) | ||||
| No. 2 | .008-.015 (.20-.40) | .002-.003(2) (.050-.082) | ||||||||
| No. 3 | .015-.055 (.40-1.4) | .0009-.0050(2) (.023-.137) | ||||||||
|
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CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| Engine | MAIN BEARINGS | CONNECTING ROD BEARINGS | |||||
|---|---|---|---|---|---|---|---|
| Journal Diam. In. (mm) | Clearance In. (mm) | Thrust Bearing | Crankshaft End Play In. (mm) | Journal Diam. In. (mm) | Clearance In. (mm) | Side Play In. (mm) | |
| 4474 cc | 2.754-2.755 (69.97-69.99) | .0008-.0038 (.020-.098) | No. 3 | .0039-.0157 (.100-.400) | 2.046-2.047 (51.97-51.99) | .001-.004 (.034-.092) | .004-.016 (.10-.40) |
VALVE TIMING
| Engine | INTAKE | EXHAUST | ||
|---|---|---|---|---|
| Open (ATDC) | Close (ABDC) | Open (BBDC) | Close (BTDC) | |
| 4474 cc | 12° | 48° | 32° | 6° |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.