Alfa Romeo A75 V6 3.0 group A (1988)
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Paul Rouby in Tour de Corse '88
Source | Development chain 1986: Alfa Romeo A75 Turbo 1988: Alfa Romeo A75 V6 3.0 |
Specifications
Group/Class | A/8 | Homologation number: A5350 | |
Years active | 1988 | Homologation start: 1/2/1988 Homologation end: 31/12/1999 |
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Engine | |||
---|---|---|---|
Type | Alfa Romeo Busso, V6 cyl (60o), 4 stroke, petrol engine | located front longitudinal | |
Capacity | 2959 cc | WRC: 2959 cc | |
Bore x Stroke (mm) | 93.0 x 72.6 | ||
Compression ratio | 9.5:1, 11.5:1 | ||
Output power - torgue | |||
Main bearings | forged steel crankshaft with 4 main bearings 60 mm diameter, big end journal diameter 52mm | connecting rod length between centers 131 mm, big en bearing tunnel diameter 55.5 mm, aluminium alloy piston with 39.9mm compression height | |
Materials | block: aluminium alloy, 268mm height | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers, 127mm height | |
Cams/valves | single overhead camshaft (SOHC) in each side. 2 total | 2 valves/cyl. - 12 valves total, 44mm inlet valve diameter, 38.6mm exhaust valve diameter. 47o angle between inlet valve axis and exhaust valve axis | |
Aspiration | natural, Bosch L-jetronic multipoint electronic fuel injection | ||
Ignition | electronic, firing order 1-4-2-5-3-6 | ||
Cooling system | jacketed watercooled with pump, radiator, 6 blades-360mm diameter fan and thermostat | 12 lt | |
Lubrication system | wet sump | 7.5 lt | |
Transmission | |||
Type | rear wheel drive | 5 speed manual gearbox located infront of rear differential | |
Gearbox ratios | 1st: 2.875/1 (46/16) 2nd: 1.720/1 (43/25) 3rd: 1.226/1 (38/31) 4th: 0.946/1 (35/37) 5th: 0.780/1 (32/41) R: 3.000/1 (36/12) |
1st: 2.571/1 (36/14) 2nd: 1.823/1 (31/17) 3rd: 1.409/1 (31/22) 4th: 1.148/1 (31/27) 5th: 1.000/1 (25/25) R: 3.000/1 (36/12) |
1st: 2.133/1 (32/15) 2nd: 1.473/1 (28/19) 3rd: 1.136/1 (25/22) 4th: 0.923/1 (24/26) 5th: 0.821/1 (23/28) R: 3.000/1 (36/12) |
Diffrential ratio | 3.545/1 (39/11), 4.750/1 (38/8), 5.125/1 (41/8), 5.375/1 (43/8), 5.500/1 (44/8), 3.777/1 (34/9), 4.111/1 (37/9), 4.444/1 (40/9), 4.555/1 (41/9), 4.777/1 (43/9), 5.111/1 (46/9), 5.444/1 (49/9), 4.100/1 (41/10), 4.300/1 (43/10), 3.454/1 (38/11), 3.545/1 (39/11), 3.818/1 (42/11), 3.909/1 (43/11), 3.416/1 (41/12), 3.076/1 (40/13) | hypoid spiral bevel gear limited slip rear differential | |
Clutch | dry single disc 215mm diameter | ||
Chassis-body | |||
Type | steel monocoque Alfa Romeo 162.B60 chassis with 32kg steel 25CD4 (D38x2mm), or 40kg steel 25CD4 (D38x1.5mm) roll-cage. 4 door steel saloon 161.33 and 161.33.2 bodyshell with steed doors, steel front/rear bonnets and front/rear reinforced polyurethane bumpers | ||
Front suspension | double wishbones with torsion bar and anti roll bar | ||
Rear suspension | watt's linkage with de-dion axle, coil spring, anti roll bar | ||
Steering system | rack and pinion with hydraulic power assistance | 20.9/1, 14.6/1 to 27.2/1 ratio | |
Brakes | Front ventilated discs 270mm diameter with 2 aluminium piston calipers 48mm diameter. Rear solid discs 250mm diameter with 2 cast iron piston calipers 38mm diameter and located internally near rear differential (not in the wheel). Front: ventilated discs 332mm diameter with 4 aluminium piston calipers 2x42+2x38mm pairs diameter, 320mm diameter with 4 aluminium piston calipers 2x40+2x36mm pairs diameter, 257mm diameter with 4 aluminium piston calipers 41.3mm diameter, 279mm diameter with 4 aluminium piston calipers 38mm diameter. Rear: ventilated discs 300mm diameter with 4 aluminium piston calipers 42mm diameter, 278/280mm diameter with 4 aluminium piston calipers 2x40+2x36mm pairs diameter, 254mm diameter with 4 aluminium piston calipers 38mm diameter |
dual circuit with Benditalia vacuum servo | |
Dimensions | |||
length: 4.420 m (174 in) | width: 1.678 m (66.1 in) | height: 1.350 m (53.1 in) | |
wheelbase: 2.510 m (98.8 in) | front track: 1.396 m (55 in) | rear track: 1.382 m (54.4 in) | |
Rims - tires | 6.5 x 14" or 15" | ||
Weight | 1150 kg | 55% - 45% distribution front/rear | |
Fuel tank | 70 lt | ||
Drag coefficient | 0.34 |
Results in WRC
Races
Works team: -
Season
Entry | Rally event | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Driver Codriver |
Team | M.C Entry list |
SVE Entry list |
POR | KEN | TdC | GRE | Oly | (N.Z) | ARG | FIN | (CdI) | S.R | RAC | |
Paul Rouby Jean-Louis Martin |
8th | ||||||||||||||
Jacques Panciatici Philippe David |
Gema Racing | eng ine | |||||||||||||
Gabriele Noberasco Massimiliano Cerrai |
acci dent | ||||||||||||||
Total points () |
3 | 3 | |||||||||||||
Statistics | |||||||||||||||
Others starts/finishes | 3/1 | 2/1 | 1/0 |
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SourcePaul Rouby in Tour de Corse '88
Drawings
Sourcepage revision: 50, last edited: 16 Dec 2019 19:02