Published on: Jan 20, 2016 @ 20:04 Originally Published in: 2014 (old website) (C) Jay Auger - website owner & author Notice: Any form of duplication methods (including but not limited to copy/paste of text and screen capture) of the website's content is strictly forbidden.
INTRODUCTION
The 911 SC/RS was born out of the need to provide Porsche Group C race sponsor Rothmans with a relatively instant Group B rally car for them to enter in their distinctive blue and white livery in various markets and racing series, including international rallying and the famed World Rally Championship (WRC).
TABLE OF CONTENTS
SUMMARY
Per the rules allowed, all previous Group 1~4 homologated cars could be transferred into the new Group B regulations without change. In 1982, Porsche would re-homologate the 911 SC Group 3 car into Group B by producing twenty “RS” evolution cars.
However, under the new Group B rules, having a larger engine would have meant being in a capacity class with a higher weight limit, hence the SC/RS was based on the earlier 3.0 litre SC unit rather than the newer 3.2-litre Carrera powerplant.
While Rothmans picked up most of the tab with some support from Shell and Michelin, both the development and programme of the new rally car were entrusted to David Richards – the then Silverstone-based Prodrive team. Out of the 20 “evolution” units produced, five were assigned to Prodrive‘s rally programme, and the rest sold on as “Special Edition” road cars by Porsche.
Entered under the “Rothmans Porsche Rally Team” banner, the 911 SC/RS got decent results in the early Group B era of its WRC rallying career, but it never could clinch a win against its fiercer four wheel drive opponents. The best 911 SC/RS finishes were third places in the 1982 Monte Carlo and Tour de Corse rallies (1982 & 1985).
It is note to mention that almost all of Porsche’s lineup of the time was homologated in Group B, including the 924, 928, and 944 models (full list HERE). However, these cars mostly participated in lesser national tarmac rallies and never matched the 911’s overall international success.
The Porsche 911 was planned to eventually be replaced by the 959 “Gruppe B” supercar but delays in its development lengthened the SC/RS’ rallying career until the demise of Group B in 1986.
***This article is only a quick excerpt / please come back later for page expansion***
RALLY CAR SPECIFICATIONS
| Group/Class | B/12 | Homologation number: B-207 (click # to see papers) |
| Years active | 1982~1986 | Homologation
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| Engine | ||
| Type | Type 908/18, H-6, DOHC 24v, gas | rear, longitudinal |
| Displacement | 2994 cc | WRC= 2994 cc |
| Compression ratio | 10.3:1 | |
| Output Power – Torque | 290 HP @ 7000 rpm | – lb-ft @ – rpm |
| Materials | block: N/A | cylinder head: N/A |
| Aspiration |
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| Ignition | electronic | |
| Lubrication system | dry sump with 1 oil cooler | |
| Cooling system | air-cooled | |
| Transmission | ||
| Type | rear wheel drive | Type 915 – 5 speed manual gearbox |
| Gearbox ratios | N/A | N/A |
| Differential ratios | N/A | limited slip rear differential |
| Clutch | N/A | |
| Chassis-body | ||
| Type | 930 steel chassis with roll cage, “turbo” widebody panels, aluminum door panels & front bonnet, fiberglass bumper covers, sills, engine lid, and rear spoiler, thinner window glass | |
| Front suspension |
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| Rear suspension |
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| Steering system | N/A | N/A |
| Brakes | N/A |
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| Dimensions | ||
| length: 168.9 in (4290 mm) | width: 69.9 in (1776 mm) | height: 51.6 in (1310 mm) |
| wheelbase: 89.4 in (2270 mm) | front track: N/A | rear track: N/A |
| Rims – Tires |
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| Dry/Unladen Weight | 960 kg (2115 lb) | Bias: N/A |
| Weight/power | 3.3 kg/HP (7.3 lb/HP) | |
| Fuel tank | N/A | |
| Drag coefficient | N/A | |
HOMOLOGATION VERSION
Porsche is synonymous with motorsport and rallying did not escape their aspirations during the first two decades of the 911 model.
The Group B regulations required that 20 special “evolution” (ET) racing cars be built for homologation of production models already well over the 200 mandated road units. 15 of these “SC/RS” were sold to Porsche’s best customers as “Special Edition” road cars – the other 5 being reserved for the international rally programme.
ROAD CAR SPECIFICATIONS
***coming soon***
VIDEOS
REFERENCES
(free delivery worldwide!)
AWIN Affiliates Program – by purchasing books with the links provided here you are also helping to support the Rally Group B Shrine!*
Group B – The rise and fall of rallying’s wildest cars (English)
Gruppe B – Aufstieg und Fall der Rallye-Monster (German)
Group 4 – From Stratos to quattro (English)
Gruppe 4 – Das Jahrzehnt der Heckschleudern (German)
Porsche 911: Rallye and Racing (German)
Porsche 911 in Racing : Vier Jahrzehnte im Motorsport. Four Decades of Motor Racing (English + German)
(C) Articles by Jay Auger – website owner, main author & chief editor
- Images & videos are the property of their original owners
- All homologation papers are the property of the Fédération Internationale de l’Automobile (FIA): SOURCE
- Eifel Rallye Festival pictures used under permission – McKlein Publishing
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