Renault Alpine A310 group 4 (1974)
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Development chain 1970: Renault Alpine A110 1.6 1972: Renault Alpine A110 1.8 1974: Renault Alpine A310 1977: Renault Alpine A310 V6 |
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Specifications
2340 units built
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Click here for parts
| Group/Class | 4/3 | Homologation number: 3066 | ||
| Years active | 1974 - 1976 | Homologation start: 1/6/1974 Homologation end: 31/12/1981 |
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| Engine | ||||
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| Type | Renault Cléon-Alu A2L 844-32, straight 4 cyl, 4 stroke, petrol engine | located rear longitudinally | ||
| Capacity | 1605 cc, (1796 cc) | WRC: 1605 cc, (1796 cc) | ||
| Bore x Stroke (mm) | 78.0 x 84.0, (82.5 x 84.0) | |||
| Compression ratio | 11.3:1. 1975, group 4, 16V: 11.8:1 | |||
| Output power - torgue | 135 HP @ 6250 rpm 175 HP @ 7500 RPM |
14.8 kgm @ 5000 rpm 195 Nm @ 5800 RPM |
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| Main bearings | 5 of 54.8mm diameter, 48 mm big end bearings diameter | connecting rod length 150 mm with 3/8" 8740 bolts, big end bearing dimensions D51.6x25mm, small end bearing D21x22mm. Cast aluminium alloy piston with 46 mm compression height. Piston rings 1,75/2/4mm, Piston pin D21 x 66,50mm. | ||
| Materials | block: aluminium alloy with 89mm bore spacing. Steel wet cylinder liners (Outside diameter down: 82,50mm. Outside diameter above: 96,0mm. Height totally: 143,50mm) | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers | ||
| Cams/valves | side camshaft with overhead valves (OHV), 1975, group 4: double overhead camshaft (DOHC), chain driven | 2 valves/cyl. - 8 valves total. 42mm inlet valve diameter, 35.6mm exhaust valve diameter. 2 coil springs per valve. 1975, group 4: 4 valves per cyl - 16 valves total. 33.8mm inlet valve diameter, 27.35 mm exhaust valve diameter. 2 coil springs per valve |
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| Aspiration | natural, 2 x Weber 45 DCOE carburetors, or Bosch multipoint fuel injection with electric pump | |||
| Ignition | contact breaker points, firing order, 1-3-4-2, 12V battery 50 Ah | |||
| Cooling system | jacketed watercooled with pump, radiator, 3 x 145 mm diameter-7 blades fan and thermostat | 9 lt | ||
| Lubrication system | wet sump | 4 lt | ||
| Transmission | ||||
| Type | rear wheel drive | Renault type 365-10, 5 speed manual gearbox | ||
| Gearbox ratios | 1st: 3.61/1 (47/13) 2nd: 2.33/1 (42/18) 3rd: 1.61/1 (37/23) 4th: 1.21/1 (34/28) 5th: 0.967/1 (30/31) R: 3.08/1 (40/13) |
1st: 3.07/1 (43/14) 2nd: 2.25/1 (36/16) 3rd: 1.68/1 (37/22) 4th: 1.29/1 (35/27) 5th: 1.03/1 (32/31) R: 3.08/1 (37/12) |
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| Diffrential ratio | 3.37/1 (27/8), 3.78/1 (34/9) | spiral bevel gears limited slip rear differential | ||
| Clutch | dry single disk 217mm diameter. 1975, group 4: double plate disc 187 mm diameter | |||
| Chassis-body | ||||
| Type | tubular steel backbone Alpine VE (1971-73) or VF (1974-76) chassis, 2 door coupe one-piece fiberglass bodyshell. Group 4: extended wheel arches | |||
| Front suspension | double equal "A" wishbones with coil springs, hydraulic shock absorbers and anti roll bar | |||
| Rear suspension | double equal "L" wishbones with coil springs, hydraulic shock absorbers and anti roll bar | |||
| Steering system | rack and pinion (no servo) | 3 turns lock to lock | ||
| Brakes | front solid disks 254mm diameter with 1 piston caliper 48 mm piston diameter. Rear solid disks 254mm diameter with 1 piston caliper 45 mm piston diameter. 1976, group 4: ventilated discs | dual circuit with vacuum servo | ||
| Dimensions | ||||
| length: 4180mm (164.6") | width: 1648mm (64.9"), group 4: +100mm | height: 1150mm (45.3") | ||
| wheelbase: 2270mm (89.4") | front track: 1383mm (54.4") | rear track: 1410mm (55.5") | ||
| Rims - tires | 6.5 x 13" | 165 HR 13 | ||
| Weight | 840 kg | |||
| Fuel tank | 55 or 92 lt | |||
Results in WRC
Races
works: Alpine Renault
SourceJean-Luc Thérier in Tour de Corse '74
SourceFrancis Vincent in Tour de Corse '75
SourceJean Ragnotti in Acropolis '76
SourceJean Ragnotti in Tour de Corse '76
SourceBernard Beguin in Tour de Corse '77
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Drawings
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Rear Suspension
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page revision: 130, last edited: 02 Dec 2019 02:36