Porsche 911 RSR Turbo group 5 (1974)
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Source
Chassis numbers here and here
RSR = Rennsport Racing (Race Sport Racing)
Specifications
5 units built
Click here and here and here
| Type | Porsche Type 911/76, boxer 6 cyl (180o), 4 stroke, petrol engine | located longitudinally behind rear axle |
| Capacity | 2142cc | |
| Bore x Stroke (mm) | 83.0 x 66.0 mm | |
| Compression ratio | 6.5:1 | |
| Output power - torgue | 500 bhp / 373 KW @ 7600 rpm | 549 Nm / 405 ft lbs @ 5400 rpm |
| Main bearings | forged steel crankshaft with 8 plain main bearings 57mm diameter, 57mm big end journal diameter | titanium connecting rods, 130mm distance center to center, 61mm big end bearing diameter |
| Materials | block: magnesium alloy, 124.5mm bore spacing, Nikasil cylinders lining | cylinderhead: magnesium alloy |
| Cams/valves | 2 x 1 overhead camshafts (SOHC), chain driven | 2 valves/cyl. - 12 valves total |
| Aspiration | 1 x KKK turbocharger with Bosch "pulsed injection" D-Jetronic mechanical Fuel Injection system using Kugelfischer PL Injection pump. Click here and here | |
| Ignition | electronic, twin spark, firing order 1-6-2-4-3-5 | |
| Cooling system | aircooled | |
| Lubrication system | dry sump with 1 oil cooler | 11 lt |
| Transmission | ||||
| Type | rear wheel drive | Porsche 915 (Tutorial 1, Tutorial 2), 5 speed gearbox | ||
| Gearbox ratios | 1st: 3.182/1 (35/11) 2nd: 1.778/1 (32/18) 3rd: 1.125/1 (27/24) 4th: 0.821/1 (23/28) R: 3.325/1 |
1st: 3.182/1 (35/11) 2nd: 1.834/1 (33/18) 3rd: 1.261/1 (29/23) 4th: 0.962/1 (25/26) 5th: 0.759/1 (22/29) R: 3.325/1 |
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| Diffrential ratio | 4.428/1 (31/7), 3.857/1 (27/7), 5.286/1 (37/7) | spiral bevel gears limited slip rear differential | ||
| Clutch | dry single disk 225mm diameter | |||
| Chassis-body | ||||
| Type | steel monocoque 911 Type F/G chassis. 2 door coupe steel bodyshell with steel bumpers | |||
| Front suspension | mc pherson strut with lower L wishbone, coil springs, Bilstein telescopic gas shock absorber and anti-roll bar 15mm diameter | |||
| Rear suspension | trailing arm with torsion bars, Bilstein telescopic gas shock absorber and anti-roll bar 15mm diameter | |||
| Steering system | rack and pinion | |||
| Brakes | ventilated disks all around. Ventilated calipers front and rear | dual circuit with servo | ||
| Dimensions | ||||
| length: 4,128 mm (162.5 in) | width: 1,896 mm (74.6 in) | height: 1,321 mm (52 in) | ||
| wheelbase: 2,272 mm (89.4 in) | front track: 1,467 mm (57.8 in) | rear track: 1,545 mm (60.8 in) | ||
| Rims - tires | ||||
| Weight | 820kg, f/r distribution 30/70% | |||
| Fuel tank | 120 lt | |||
Results in WSCC
Season
| Car entry, chassis number | Car number/ result | ||||||||||
| Monza | Spa | Nurb | Imola | Le Man | Zeltweg | Watkins Glen | Le Castellet | Brands Hatch | Kyalami | ||
| Team | 1000km | 1000km | 1000km | 1000km | 24h | 1000km | 6h | 1000km | 1000km | 6h | |
| Martini Racing Team, 911 460 9101 R12 | #8, 5th | #14, 3rd | #8, 6th | #21, eng ine | #8, disqua lified | ||||||
| Martini Racing Team, 911 460 9016 R9 | #14T, spare car | #9, 7th | #6, gear box | #7, 6th | |||||||
| Martini Racing Team, 911 360 0576 R5 | #7, turbo | ||||||||||
| Martini Racing Team, 911 460 9102 R13 | #22, 2nd | #9, 2nd | #14, 7th | #5, 5th | |||||||
| Total points 56 |
6 | 8 | 9 | 9 | 5 | 9 | 4 | 6 | |||
| Statistics | |||||||||||
| Works Starts/finishes 13/9 | 1/1 | 1/1 | 2/2 | 2/0 | 2/1 | 2/1 | 1/1 | 1/1 | 1/1 | ||
| Driver | Team entries and car number | ||||||||||
| Martini Racing Team | |||||||||||
| Gijs van Lennep | 8 | 14, 14T | 8 | 6 | 22 | 7 | 9 | 14 | 5 | ||
| Herbert Müller | 8 | 14, 14T | 8 | 6 | 22 | 7 | 9 | 14 | 5 | ||
| Manfred Schurti | 9 | 7 | 21 | 8 | |||||||
| Helmuth Koinigg | 9 | 7 | 21 | 8 | |||||||
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page revision: 18, last edited: 29 May 2021 07:01