Published on: Jan 17, 2016 @ 20:38 Originally Published in: 2015 (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.
The world of rallycross has always been very competitive and with lower budget teams it was necessary to be ingenious. Since the rules were very loose in rallycross, many competitors tried everything to gain an edge, including converting their cars to four wheel drive before it even became the norm in Group B. However, those systems were often “homemade” by using a myriad of different parts slapped together. By 1987, with the mass introduction of Group B cars into rallycross, four wheel drive became a necessity for those who didn’t have it.
The Renault 5 Turbo never came with four wheel drive, not even with the famed Group B Maxi Turbo version, but Gérard Roussel’s team did it with their rallycross car. A four wheel system from the Volkswagen Beetle Baja 4×4 was fitted to the car then later modified with a Peugeot 505 limited slip front differential. With a limited budget, some compromises were made to the car by using cheaper parts from lesser variants of the car. Still, even though the car was a bit under-powered compared to its rivals, Roussel performed brilliantly in the French Rallycross Championship; 1986 – 3rd / 1987 – 1st / 1988 – 4th / 1989 – 5th.
|Group/Class||Formula A / Division 2||French Championships: 1 (1987)|
|Type||C7K, I-4, OHV 8v, gas||located rear longitudinally vertical, in front of rear axle|
|Output power – torque||370 HP @ 7,000 rpm||– @ – rpm|
|Materials||block: cast iron||cylinder head: aluminium alloy|
||Boost: ~46 psi|
|Ignition||electronic, firing order 1-3-4-2|
|Lubrication system||dry sump|
|Type||four wheel drive||VW – 5 speed manual|
|Gearbox ratios||1st: 3.250
|Differential ratio||4.111||spiral bevel gears 40% limited slip rear differential|
|Clutch||dry – double plate|
|Type||steel monocoque Type 8220 with roll-cage. 3 door hatchback steel/aluminium/polypropylene bodyshell with aluminium doors, polypropylene front and rear bonnets, polyester front and rear bumpers covers|
|Front suspension||double wishbones with lower longitudinal torsion bars connected to lower wishbone, gas shock absorbers and anti roll bar|
|Rear suspension||double wishbones with coil springs, gas shock absorbers and anti roll bar|
|Steering system||rack and pinion with hydraulic power assistance||13.22:1|
||dual circuit with servo, adjustable ratio split front to rear|
|length: 3700 mm (145.7 in)||width: 1769 mm (69.6 in)||height: 1320 mm (52.0 in)|
|wheelbase: 2430 mm (95.7 in)||front track: 1390 mm (54.7 in)||rear track: 1490 mm (58.7 in)|
|Rims – tires||16 inch||22/64 16 Michelin|
|Weight/power||2.5 kg/HP (5.5 lb/HP)|
|Fuel tank||25 liters|
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Article by Jay Auger
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