Renault 5 Turbo + Homologation Version

Published on: Jan 20, 2016 @ 20:57
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.
5Turbo-cevennes.JPG
Renault 5 Turbo “Cévennes”

When the winds of rallying were shifting favorably towards mid-engine layouts, Renault’s Jean Terramorsi, vice-president of production, asked Bertone’s Marc Deschamps to design a new sports version of the Renault 5 Alpine to be used for Group 4 rallying homologation. Although the standard Renault 5 had a front-mounted engine and front wheel drive, the 5 Turbo featured a 160 HP mid-mounted 1397 cc turbocharged engine and rear wheel drive. The mechanical elements were also radically different from the standard model.

The first competition model is known as type “Cévennes” to commemorate a rally of the same name: it featured around 180 HP and was driven by Jean Ragnotti to win the 1981 Monte Carlo Rally and the 1982 Tour de Corse Rally.

Renault 5 Turbo "Tour de Corse"
Renault 5 Turbo “Tour de Corse”

For 1983, Renault would introduce a new version of the car that was updated to Group B rules: it was known as type “Tour de Corse”. It originally featured 210 HP but as much as 285 HP was reported to be available by the end of 1984. The car’s best WRC result would be a 3rd place podium finish at the 1984 Tour de Corse, again driven by Ragnotti.

renault_5_maxi_turbo_8
Renault 5 Maxi Turbo

In 1985, Renault upped the ante with the ultimate version of the R5 Turbo: known as type “Maxi”. It featured revised aerodynamic elements, a wider track, a larger 1527 cc engine that could produce up to 360 HP, and the “DPV” anti-lag system to help provide instantaneous power. Ragnotti would win that year’s Tour de Corse Rally, proving the excellence of the car on French tarmac. Only 20 of these cars were built.

It is notable to mention that ALL of the works competition versions of the R5 Turbos were based on the “Turbo 1” homologation model. In the end, even though the R5 Turbo was mainly aimed at tarmac events and performed poorly in other types of rallies, it was very popular among privateers and was used extensively in the French Rally Championship and in the WRC.

SPECIFICATIONS

  • C = “Cévennes” version
  • T = “Tour de Corse” version
  • M = “Maxi” version
Group/Class
  • B/11 (C)
  • B/11 (T)
  • B/12 (M)
  • Homologation #: 669 (Group 4) & B-205 (C)
  • Homologation #: B-234 (T)
  • Homologation #: B-267 (M)
  • (click on # to view papers)
Years active
  • 1980~1982 (C)
  • 1983~1986 (T)
  • 1985~1986 (M)
Homologation start:

  • September 1st 1980 (Group 4) / February 1st 1982 (Group B) (C)
  • January 1st 1983 (T)
  • December 1st 1984 (M)

Homologation end:

  • December 31st 1987 (C)
  • December 31st 1989 (M)
  • December 31st 1991 (T)
Engine
Type
  • C6J – code 840 “Cléon-Fonte”, I-4, OHV 8v, gas (C,T)
  • C7K, I-4, OHV 8v, gas (M)
located rear longitudinally vertical, in front of rear axle
Displacement
  • 1397 cc (C,T)
  • 1527 cc (M)
  • WRC x 1.4 = 1956 cc (C,T)
  • WRC x 1.4 = 2138 cc (M)
Compression ratio 7.0:1
Output power – torque
  • 180 HP @ 7000 rpm (C)
  • 210~285 HP @ 7000 rpm (T)
  • 360 HP @ 6500 rpm (M)
  • N/A (C)
  • 221 lb-ft (300 Nm) @ 6000 rpm (T)
  • 311 lb-ft (421 Nm) @ 3750 rpm (M)
Materials block: cast iron cylinder head: aluminium alloy
Aspiration
  • Garrett T3 turbocharger (C,T)
  • Garrett T31 turbocharger (M)
  • air/air intercooler
  • Bosch K-jetronic mechanical/hydraulic multi-point fuel injection
DPV anti-lag system (M)
Ignition electronic, firing order 1-3-4-2, NGK BPR5EIX Iridium IX, or NGK BPR5EGP G-Power Spark Plugs
Cooling system water-cooled
Lubrication system dry sump
Transmission
Type rear wheel drive
  • Type UN, 5 speed manual gearbox
  • magnesium case (M)
Gearbox ratios
  • 1st: 3.363
  • 2nd: 2.058
  • 3rd: 1.380
  • 4th: 1.057
  • 5th: 0.868
  • R: 3.182
  • 1st: 3.250
  • 2nd: 2.235
  • 3rd: 1.619
  • 4th: 1.250
  • 4th: 1.260 (M)
  • 5th: 1.035
  • R: 3.182
Differential ratio
  • 4.375, 3.889
  • 1984+: 3.444
spiral bevel gears 40% limited slip rear differential
Clutch dry – double plate
Chassis-body
Type
  • steel monocoque Type 8220 with roll-cage, 3 door hatchback steel/aluminium/polypropylene bodyshell with aluminium doors, front polyester bonnet, rear aluminium/polypropylene bonnet and polyester front and rear bumpers. (C,T)
  • polypropylene front and rear bonnets (M)
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 optional hydraulic power assistance
  • 13.2:1 (C,T)
  • 11.1:1 or 12.7:1 (M)
Brakes
  • FRONT: ventilated disks 260mm diameter with 1 steel/aluminium piston caliper, or 277/304mm diameter with 4 aluminium piston calipers.
  • REAR: ventilated disks 260mm diameter with 1 steel/aluminium piston caliper, or 277/304mm diameter with 4 aluminium piston calipers
dual circuit with servo, adjustable ratio split front to rear
Dimensions
length:

  • 3664 mm (144.3 in) (C,T)
  • 3700 mm (145.7 in) (M)
width:

  • 1760 mm (69.3 in) (C,T)
  • 1769 mm (69.6 in) (M)
height: 1320 mm (52.0 in)
wheelbase: 2430 mm (95.7 in) front track:

  • 1346 mm (53.0 in) (C,T)
  • 1390 mm (54.7 in) (M)
rear track:

  • 1474 mm (58.0 in) (C,T)
  • 1490 mm (58.7 in) (M)
Rims – tires Cévennes / Tour de Corse

  • F 5.3″ x 13.38″
  • R 7.7″ x 14.37″/ 15.35″

Maxi

  • F 7″~7.5″ x 15″
  • R 10″ ~11″ x 15″
Cévennes / Tour de Corse

  • F 190/55 HR 340
  • R 220/55 VR 390

Maxi

  • F 205/55 x 15″
  • R 265/45 x 15″
Dry/Unladen Weight 900 kg (1984 lb)
Weight/power
  • 5.0kg/HP (11.0 lb/HP) (C)
  • 3.5 kg/HP (7.7 lb/HP) (T)
  • 2.5 kg/HP (5.5 lb/HP) (M)
Fuel tank 95 lt
Drag coefficient 0.44

HOMOLOGATION VERSION

1980 Renault 5 Turbo
1980 Renault 5 Turbo

In 1980, the first 400 production R5 Turbos were made to comply with Group 4 homologation to allow the car to compete in international rallies, and were manufactured at the Alpine factory in Dieppe, France.

Once the homologation models were produced, a second version named “Turbo 2” was introduced by using cheaper steel Renault 5 parts to replace many of light alloy components found in the original 5 Turbo version. Thus, the Turbo 2 was less expensive and could be sold at a more favorable price. It is notable to mention that the Turbo 2 itself was homologated a few months later to allow customers to compete with the car.

Although the Turbo 2 was produced a total of 3175 units to be sold to the general public, it could still be considered to be an homologation special. It was a small peppy car perfect for blazing away the French countryside. It had “only” 160 HP but could dash to 100 kph (62 mph) in 6.4 seconds nonetheless. After the “Maxi” evolution, to which Renault built only 20 examples to be sold for competition use, you could source a factory kit to update your Turbo/2 to the new spec. The car was very popular amongst “tuning” enthusiasts.

In 2001, Renault somewhat rebooted the R5 Turbo concept with the making of the Clio V6 RS.

SPECIFICATIONS

  • 1 = Turbo
  • 2 = Turbo 2
Class Sports / Supermini 3-door hatchback
Production
  • 1980 (400 units) (1)
  • 1980~1986 (3175 units) (2)
Assembly:

  • Dieppe, France (1)
  • France & Belgium (2)
Engine
Type C6J – code 840 “Cléon-Fonte”, I-4, OHV 8v, gas located rear longitudinally vertical, in front of rear axle
Displacement 1397 cc
Compression ratio 7.0:1
Output power – torque 160 HP @ 6,000 rpm  158 lb-ft @ 3,250 rpm
Materials block: cast iron cylinder head: aluminium alloy
Aspiration
  • Garrett T3 turbocharger
  • air/air intercooler
  • Bosch K-Jetronic mechanical fuel injection
Boost: 14.5 psi
Ignition electronic, firing order 1-3-4-2
Cooling system water-cooled  front mount radiator
Lubrication system N/A
Transmission
Type rear wheel drive R30 Type 369, 5 speed manual gearbox
Gearbox ratios 1st: 3.363
2nd: 2.058
3rd: 1.380
4th: 1.057
5th: 0.868
R: 3.182
Differential ratio
  • N/A
N/A
Clutch dry, double plate, hydraulic assist
Chassis-body
Type
  • steel monocoque Type 8220 / 3 door hatchback, steel bodyshell. (2)
  • steel/aluminium/polypropylene bodyshell with aluminium doors, front polyester bonnet, rear aluminium/polypropylene bonnet and polyester front and rear bumpers. (1)
Front suspension double wishbones with lower longitudinal torsion bars connected to lower wishbone, telescopic gas shock absorbers and anti roll bar
Rear suspension double wishbones with coil springs, telescopic gas shock absorbers and anti roll bar
Steering system rack and pinion with optional hydraulic power assistance N/A
Brakes
  • FRONT: ventilated rotors
  • REAR: ventilated rotors
N/A
Dimensions
length: 3660 mm (144.1 in) width: 1750 mm (68.9 in) height: 1320 mm (52.0 in)
wheelbase: 2430 m (95.7 in) front track: N/A rear track: N/A
Rims – tires N/A
Curb Weight 970 kg (2138 lb)
Weight/power 6.1 kg/HP (13.4 lb/HP)
Fuel tank N/A
Drag coefficient 0.44 Cd

PICTURES & VIDEOS

renault-5-turbo-rally-mechanics r5tmc R5tR

 

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renault5turbo

1980 Renault 5 Turbo

1980-renault-5-turbo-3

Renault-5-Turbo renault_5_turbo2_2_85


(C) Article by Jay Auger – website owner & author

  • Images & videos are the property of their original owners
  • All homologation papers are the property of the Fédération Internationale de l’Automobile (FIA): SOURCE

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