The 2.7-liter 911S was so problematic that I named it as one of Porsche’s Deadly Sins a couple years ago. Its engine failed with monotonous regularity, often between the expiration of the 12,000-mile warranty and the 50,000-mile mark on the odometer. The 1974 models usually lived a bit longer because they didn’t have thermal reactors, and the 1977 models had improved Dilavar head studs, but none of the “S” cars were reliable in any modern, or even contemporaneous, sense of the world. In the thirty-five years since the model was replaced with the “Super Carrera” three-liter, however, the aftermarket has managed to address the core issues and build reliable replacement engines for these otherwise charming classic coupes.
As the snow started to fall in Central Ohio this past weekend, I fired up my own aircooled 911 and took it downtown to meet a restored example of its ancestors.