Engine · Ignition and Tune-Up
| System | Ignition and Tune-Up |
| Subsystem | Engine |
| Years | 1980–1983 |
| Vehicles | 911SC |
| Confidence | Cross Referenced |
Source: Porsche 911 Workshop Manual, Cooling System section ("Replacing and Adjusting Fan Drive Belt"), page 55; cross-referenced against Porsche Technical Specifications, WKD 422 720 (911 SC/Turbo 3.3, 78-81 Models), "Engine specifications for 1978, 1979, 1980 and 1981 models (911 SC)", page 15, and Porsche Technical Specifications, WKD 423110 (911 SC, 911 Turbo, 82-83 Models), "Kühlung", page 15 (German edition, translated)