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EspañolRUF CTR
The 'RUF CTR' also known as the 'CTR Yellowbird', or simply 'Yellowbird' was a limited-production, high performance supercar produced by RUF of Germany.
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, a lightened body, uprated suspension and braking systems, a custom-designed transmission and several unique trim pieces such as fiberglass bumpers and intake ducts on the rear fenders.
Developing 469 horsepower and 408 ft·lbf of torque and weighing in it at only 2,500 pounds, the CTR provided stellar performance, with a 0-60 time of around 4.0 seconds flat and a top speed in excess of 200 miles per hour. Although a small group of vehicles such as the Ferrari F40 and Porsche 959 were faster to 60 miles per hour, the Yellowbird could out perform all competition when it came to top speed, topping out at an astonishing 211 miles per hour, making it the fastest sports car in the world (in terms of top speed) at the time of its release.
The car received its nickname, "Yellowbird" during testing by Road and Track magazine, whose staffers noted the contrast created by its yellow paintwork against the overcast skies on the day of their photo shoot.
The CTR (for Group C Turbo RUF) was based on the 1987 911 Carrera 3.2 as opposed to the 930, Porsche's factory turbocharged version of the 911; a decision made because of the 3.2's slightly lower curb weight and "cleaner" drag coefficient. Factory body panels including the doors, hood and engine cover were replaced with aluminum pieces, helping to knock an additional 200 kilograms off the vehicle's factory curb weight. Fiberglass front and rear bumpers and a pair of intake ducts on the rear flares to allow airflow to the intercoolers topped the list of body modifications.
In addition to the lighter panels, considerable modifications were made to the engine as well, including boring the cylinders out to 98 mm to increase displacement from 3.2 to 3.4 litres, adding an uprated Bosch Motronic fuel injection system and switching to the ignition setup originally designed for the Porsche 962 race car. A specifically designed turbo system featuring two large kkk turbochargers and twin intercoolers topped the engine work, bringing total output to 469 horsepower and 408 ft·lbf of torque @ 5950 rpm.
At the time, Porsche equipped the 911 3.2 with a 5-speed manual transmission, but the 930 featured only a 4-speed transmission, chosen because it was the only unit manufactured by the company that could handle the turbocharged engine's high output. Not content with only four forward gears and unable to satisfactorily modify the 5-speed unit, RUF choose to use a new five-speed transmission of their own design on the CTR, which also gave them full freedom to customize gear ratios. To ensure absolute control, an upgraded suspension system, 17 inch RUF speedline alloy wheels, 330 mm diameter Brembo braking system, and Dunlop's Denloc system performance tires were spec'd to keep the car in check.
The company debuted the vehicle at the end of 1987 with pricing set at $223,000 per unit, although that number could vary depending on if a given customer ordered their car directly from RUF or brought in a unit purchased via dealer for conversion. RUF only made 29 CTRs from chassis that they bought from Porsche, most of the CTR's produced were converted from existing customer's Carreras.
A curb weight of only 2,535 pounds combined with the CTR's high power output made for fantastic performance; 0-60 in 4.0sec, 0-100 in 7.3sec, 0-125 in 11.4sec and a top speed of 211 mph.
The CTR could wholly out-perform most other supercars of the time, including the Ferrari Testarossa and Lamborghini Countach. In addition, despite being (marginally) slower to 60 miles per hour, it also had a higher top speed than the Ferrari F40 and Porsche 959, oft considered the benchmark performance cars of the 1980s.
It was also a highly competent track vehicle, and for several years the CTR held the lap record at the Nurburgring-Nordschleife track, generally considered the most difficult and demanding circuit in the world and the standard test-course for all high-end performance vehicles.
The CTR was succeeded in 1994 by the CTR2, a much more comprehensive vehicle based around Porsche's much newer 993 Generation 911.
★ Weight: 1550 kg(2535 lb)
★ Power: 469 hp@ 5950 rpm
★ Torque: 408 ft·lbf@ 5950 rpm
★ Specific output: Apprx. 137 horsepower per litre
★ Power to weight ratio: Apprx. 5.4 pounds per horsepower
★
★ 0-60: 4.0sec
★
★ 0-125: 11.4sec
★
★ Quarter mile: 11.7@ 133.5 mph
★
★ Top Speed 211 mph
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, a lightened body, uprated suspension and braking systems, a custom-designed transmission and several unique trim pieces such as fiberglass bumpers and intake ducts on the rear fenders.
Developing 469 horsepower and 408 ft·lbf of torque and weighing in it at only 2,500 pounds, the CTR provided stellar performance, with a 0-60 time of around 4.0 seconds flat and a top speed in excess of 200 miles per hour. Although a small group of vehicles such as the Ferrari F40 and Porsche 959 were faster to 60 miles per hour, the Yellowbird could out perform all competition when it came to top speed, topping out at an astonishing 211 miles per hour, making it the fastest sports car in the world (in terms of top speed) at the time of its release.
The car received its nickname, "Yellowbird" during testing by Road and Track magazine, whose staffers noted the contrast created by its yellow paintwork against the overcast skies on the day of their photo shoot.
| Contents |
| History |
| Performance |
| Succesor |
| Specification |
History
The CTR (for Group C Turbo RUF) was based on the 1987 911 Carrera 3.2 as opposed to the 930, Porsche's factory turbocharged version of the 911; a decision made because of the 3.2's slightly lower curb weight and "cleaner" drag coefficient. Factory body panels including the doors, hood and engine cover were replaced with aluminum pieces, helping to knock an additional 200 kilograms off the vehicle's factory curb weight. Fiberglass front and rear bumpers and a pair of intake ducts on the rear flares to allow airflow to the intercoolers topped the list of body modifications.
In addition to the lighter panels, considerable modifications were made to the engine as well, including boring the cylinders out to 98 mm to increase displacement from 3.2 to 3.4 litres, adding an uprated Bosch Motronic fuel injection system and switching to the ignition setup originally designed for the Porsche 962 race car. A specifically designed turbo system featuring two large kkk turbochargers and twin intercoolers topped the engine work, bringing total output to 469 horsepower and 408 ft·lbf of torque @ 5950 rpm.
At the time, Porsche equipped the 911 3.2 with a 5-speed manual transmission, but the 930 featured only a 4-speed transmission, chosen because it was the only unit manufactured by the company that could handle the turbocharged engine's high output. Not content with only four forward gears and unable to satisfactorily modify the 5-speed unit, RUF choose to use a new five-speed transmission of their own design on the CTR, which also gave them full freedom to customize gear ratios. To ensure absolute control, an upgraded suspension system, 17 inch RUF speedline alloy wheels, 330 mm diameter Brembo braking system, and Dunlop's Denloc system performance tires were spec'd to keep the car in check.
The company debuted the vehicle at the end of 1987 with pricing set at $223,000 per unit, although that number could vary depending on if a given customer ordered their car directly from RUF or brought in a unit purchased via dealer for conversion. RUF only made 29 CTRs from chassis that they bought from Porsche, most of the CTR's produced were converted from existing customer's Carreras.
Performance
A curb weight of only 2,535 pounds combined with the CTR's high power output made for fantastic performance; 0-60 in 4.0sec, 0-100 in 7.3sec, 0-125 in 11.4sec and a top speed of 211 mph.
The CTR could wholly out-perform most other supercars of the time, including the Ferrari Testarossa and Lamborghini Countach. In addition, despite being (marginally) slower to 60 miles per hour, it also had a higher top speed than the Ferrari F40 and Porsche 959, oft considered the benchmark performance cars of the 1980s.
It was also a highly competent track vehicle, and for several years the CTR held the lap record at the Nurburgring-Nordschleife track, generally considered the most difficult and demanding circuit in the world and the standard test-course for all high-end performance vehicles.
Succesor
The CTR was succeeded in 1994 by the CTR2, a much more comprehensive vehicle based around Porsche's much newer 993 Generation 911.
Specification
★ Weight: 1550 kg(2535 lb)
★ Power: 469 hp@ 5950 rpm
★ Torque: 408 ft·lbf@ 5950 rpm
★ Specific output: Apprx. 137 horsepower per litre
★ Power to weight ratio: Apprx. 5.4 pounds per horsepower
★
★ 0-60: 4.0sec
★
★ 0-125: 11.4sec
★
★ Quarter mile: 11.7@ 133.5 mph
★
★ Top Speed 211 mph
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