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.
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The world of rallycross has always been very competitive and with the lower budget privateer 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 and rallying. However, those systems were often unreliable contraptions using a myriad of different parts hastily slapped together.
The mass introduction of Group B cars into rallycross meant that four wheel drive became a necessity for those who didn’t have it and whom wanted to remain on top. One of these “underdogs” was Gérard Roussel with the conversion of his rear wheel drive Renault 5 Maxi Turbo.
The Renault 5 Turbo never came factory with four wheel drive, not even with the famed Group B Maxi Turbo version, but this would not stop Gérard Roussel’s team with their rallycross car. To achieve this feat, a four wheel system taken from the Volkswagen Beetle Baja 4×4 beach buggy was skillfully mated to the Renault’s C7K engine and to the R5 Turbo’s chassis.
Due to some issues, the “homemade” 4WD system was later modified with a Peugeot 505 limited-slip front differential for increased traction and reliability. Furthermore, as it was often the case with limited budget teams, some compromises were made by using cheaper parts from the lesser homologation variant 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 and steered the frankensteined R5 Turbo to frequent podium finishes, even clinching the 1987 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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