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| Ruf CTR "Yellowbird" | |
|---|---|
 | |
| Overview | |
| Manufacturer | Ruf Automobile GmbH |
| Production | 1987–1996 (29 built from scratch, rest converted from customer cars) |
| Assembly | Pfaffenhausen, Germany |
| Body and chassis | |
| Class | Sports car (S) |
| Body style | 2-door coupé |
| Layout | Longitudinally-mounted, rear-engine, rear-wheel-drive |
| Related | Porsche 911 |
| Powertrain | |
| Engine | 3.4 L (3,367 cc) twin-turbocharged flat-6 |
| Power output | 469 PS (345 kW; 463 hp) 553 N⋅m (408 lbf⋅ft) of torque |
| Transmission | 5-speed manual |
| Dimensions | |
| Wheelbase | 2,273 mm (89.5 in) |
| Length | 4,290 mm (169 in) |
| Width | 1,775 mm (69.9 in) |
| Height | 1,311 mm (51.6 in) |
| Curb weight | 1,150 kg (2,535 lb)[1] |
| Chronology | |
| Predecessor | Ruf BTR |
| Successor |
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The Ruf CTR (Group C, Turbo Ruf) also known as the CTR Yellowbird or simply Yellowbird, is a limited-production, high performance sports car manufactured by German automobile manufacturer Ruf Automobile. Introduced for the 1987 model year and based on the Porsche 911, the CTR featured an enlarged and highly tuned version of Porsche's 3.2 litre flat-six cylinder engine, lightened body panels, an integrated roll cage (adding chassis stiffness in addition to occupant safety), upgraded suspension and braking systems, a custom-designed transmission, and several unique trim pieces such as polyurethane bumpers, and the use of the side-mounted oil filler (a Porsche feature for the 1972 model year only) necessitated by relocating the oil tank forward to clear the intercooler on that side.
The car received its nickname, "Yellowbird", during testing by Road & Track magazine, whose staff members noted the contrast created by its yellow paintwork against the overcast skies on the day of their photo shoot.[2]