934 and 934.5 photos
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05-10-2005, 01:05 PM
#12
Race Car
Thread Starter
Yup that 934(Zork tube) is going on my ride pretty soon so I can tear down my neighbouhood...Is that a K31 turbo or something like that? Sure does look bigger than my K29.
05-11-2005, 09:23 AM
#14
Race Car
Thread Starter
gojoe,
If I had not done the Ruf look, I would have given my ride the 934 look for sure. Sometimes I wish I had gone the 934 way because I just sooo love those fat fenders.
If I had not done the Ruf look, I would have given my ride the 934 look for sure. Sometimes I wish I had gone the 934 way because I just sooo love those fat fenders.
05-18-2005, 01:35 PM
#15
Race Car
Thread Starter
Found more pics and info...
For the 1976 season, the FIA devided sportscar racing in six classes; Group 1 through 6, with Group 6 being the full-bore prototype racers. Porsche had been the dominant force in what was now known as the Group 4 class, but a new car was needed to continue the success. To be eligible for Group 4 at least 400 road cars had to be built within 2 years and the dimensions of the racing version could not be different from the road car it was derived from. Very few modifcations compared to the road car were allowed, except for those to increase safety like the installation of a fuel cell and a roll cage. To even the competion, displacement was tied to a minimum weight, from 495 kg with less than 500cc to 1270 kg for over 6000cc.
Porsche's entry in GT-racing in the first half of the 1970 consisted of the 911 RS and RSR models. These were powered by naturally aspirated engines of up to 3 litres. However, these models were unlikely to be homologated, because of their limited production numbers, so a new car was needed. In 1975 the new 930 (911 Turbo) model was launched and this would form the base for the new Group 4 racer, aptly named 934. The displacement of turbocharged engines are multiplied by 1.4 to get the normally aspirated equivalent displacement, this mean that the 3 litre turbo engine placed the new Group 4 car in the 4000 - 4500 cc class. When Porsche designed the 930, the competition version was already anticipated and many components like the clutch and gearbox were made much stronger than needed for the 260 bhp 930, an ingenious way to evade the non-modification rule.
To comply with the regulations, the 934 would have to weigh at least 1120kg. This was easily achieved by removing most of the interior and weight was brought down to 1090kg even with the electric windows still in place. In race trim it was balasted to 1120 kg. Major modifications to the engine were not allowed, but due to the nature of turbocharged engines, a higher output is fairly easily achieved. In Group 4 trim the 3 litre engine was good for a tarmac blistering 480 bhp and equipped with larger valves in 1977 over 550 bhp was reached.
In competition, the 934 picked up where the 911 RSR had left off, by winning the European GT championship in the hands of Toine Hezemans and on the other side of the Atlantic Ocean, George Follmer was TransAm champion with a 934. Although Porsche's interests wandered from Group 4 racing to Group 5 racing where the 935 was decimating the competion, the 934 kept on winning in the last years of the 1970s. Most notable are the three successive class victories at LeMans from 1977 to 1979.
Pictured is a Valiant livered 934, it seen here on the Spa Franchorchamps track where it took part in the Group C revival race which was part of the 2003 RMU Classic weekend. WM
General specifications
Record last updated Before 12 / 01 / 2004
Country of origin Germany
Years of production 1976 - 1977
Numbers built N/A
Body design N/A
Engine
Engine Type 930/71 B 6
Engine Location Rear , longitudinally mounted
Configuration N/A
Displacement 2.994 liter / 182.7 cu in
Bore / Stroke 95.0 mm (3.7 in) / 70.4 mm (2.8 in)
Compression ratio 6.5:1
Valvetrain 2 valves / cylinder, DOHC
Fuel feed Bosch K-Jetronic Fuel injection
Aspiration Turbo
Drivetrain
Chassis/body unitary steel
Front suspension McPherson struts, lower wishbones, longitudinal torsion bars, Bilstein shock absorbers, anti-roll bar
Rear suspension N/A
Steering rack-and-pinion
Brakes girling discs, all-round
Gearbox Type 930 4 speed Manual
Drive Rear wheel drive
Dimensions
Weight 1120 kilo / 2469.2 lbs
Length / Width / Height 4290 mm (168.9 in) / 1870 mm (73.6 in) / 1300 mm (51.2 in)
Wheelbase / Track (fr/r) 2270 mm (89.4 in) / N/A / N/A
Performance figures
Power 485 bhp / 362 KW @ 7000 rpm
Torque 588 Nm / 434 ft lbs @ 5400 rpm
BHP/Liter 162 bhp / liter
Power to weight ratio 0.43 bhp / kg
Top Speed 303 km/h / 188 mph
0-60 mph Acceleration N/A
For the 1976 season, the FIA devided sportscar racing in six classes; Group 1 through 6, with Group 6 being the full-bore prototype racers. Porsche had been the dominant force in what was now known as the Group 4 class, but a new car was needed to continue the success. To be eligible for Group 4 at least 400 road cars had to be built within 2 years and the dimensions of the racing version could not be different from the road car it was derived from. Very few modifcations compared to the road car were allowed, except for those to increase safety like the installation of a fuel cell and a roll cage. To even the competion, displacement was tied to a minimum weight, from 495 kg with less than 500cc to 1270 kg for over 6000cc.
Porsche's entry in GT-racing in the first half of the 1970 consisted of the 911 RS and RSR models. These were powered by naturally aspirated engines of up to 3 litres. However, these models were unlikely to be homologated, because of their limited production numbers, so a new car was needed. In 1975 the new 930 (911 Turbo) model was launched and this would form the base for the new Group 4 racer, aptly named 934. The displacement of turbocharged engines are multiplied by 1.4 to get the normally aspirated equivalent displacement, this mean that the 3 litre turbo engine placed the new Group 4 car in the 4000 - 4500 cc class. When Porsche designed the 930, the competition version was already anticipated and many components like the clutch and gearbox were made much stronger than needed for the 260 bhp 930, an ingenious way to evade the non-modification rule.
To comply with the regulations, the 934 would have to weigh at least 1120kg. This was easily achieved by removing most of the interior and weight was brought down to 1090kg even with the electric windows still in place. In race trim it was balasted to 1120 kg. Major modifications to the engine were not allowed, but due to the nature of turbocharged engines, a higher output is fairly easily achieved. In Group 4 trim the 3 litre engine was good for a tarmac blistering 480 bhp and equipped with larger valves in 1977 over 550 bhp was reached.
In competition, the 934 picked up where the 911 RSR had left off, by winning the European GT championship in the hands of Toine Hezemans and on the other side of the Atlantic Ocean, George Follmer was TransAm champion with a 934. Although Porsche's interests wandered from Group 4 racing to Group 5 racing where the 935 was decimating the competion, the 934 kept on winning in the last years of the 1970s. Most notable are the three successive class victories at LeMans from 1977 to 1979.
Pictured is a Valiant livered 934, it seen here on the Spa Franchorchamps track where it took part in the Group C revival race which was part of the 2003 RMU Classic weekend. WM
General specifications
Record last updated Before 12 / 01 / 2004
Country of origin Germany
Years of production 1976 - 1977
Numbers built N/A
Body design N/A
Engine
Engine Type 930/71 B 6
Engine Location Rear , longitudinally mounted
Configuration N/A
Displacement 2.994 liter / 182.7 cu in
Bore / Stroke 95.0 mm (3.7 in) / 70.4 mm (2.8 in)
Compression ratio 6.5:1
Valvetrain 2 valves / cylinder, DOHC
Fuel feed Bosch K-Jetronic Fuel injection
Aspiration Turbo
Drivetrain
Chassis/body unitary steel
Front suspension McPherson struts, lower wishbones, longitudinal torsion bars, Bilstein shock absorbers, anti-roll bar
Rear suspension N/A
Steering rack-and-pinion
Brakes girling discs, all-round
Gearbox Type 930 4 speed Manual
Drive Rear wheel drive
Dimensions
Weight 1120 kilo / 2469.2 lbs
Length / Width / Height 4290 mm (168.9 in) / 1870 mm (73.6 in) / 1300 mm (51.2 in)
Wheelbase / Track (fr/r) 2270 mm (89.4 in) / N/A / N/A
Performance figures
Power 485 bhp / 362 KW @ 7000 rpm
Torque 588 Nm / 434 ft lbs @ 5400 rpm
BHP/Liter 162 bhp / liter
Power to weight ratio 0.43 bhp / kg
Top Speed 303 km/h / 188 mph
0-60 mph Acceleration N/A