Lancia Beta Coupe group 4 (1974)
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Rallye San Remo '74: Shekhar Mehta
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Robin Ulyate/Ian Smith in Safari rally '75
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Source | Development chain 1974: Lancia Beta Coupe 1.8 1975: Lancia Beta Monte Carlo 1982: Lancia Rally 037 1984: Lancia Rally 037 Evo |
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Specifications
Documentation Technique for street version
Group/Class | 4/3 | Homologation number: 3064 and transfer group B |
Years active | 1974 - 1975 | Homologation start: 1/4/1974 Homologation end: 31/12/1981 |
Engine | ||
---|---|---|
Type | Fiat Twin Cam (Lambredi), Type 828 AC.1.000, straight 4cyl, 4 stroke, petrol engine | located front transverse |
Capacity | 1756 cc, 1839 cc | WRC: 1756 cc, 1839 cc |
Bore x Stroke (mm) | 84.0 x 79.2, 86.0 x 79.2 | |
Compression ratio | 9.8:1, 10.5:1 | |
Output power - torgue | 120 HP @ 6200 rpm 195 HP @ 7700 rpm |
15.3 kgm @ 4500 rpm 22.4 kgm (220 Nm) @ 5500 rpm |
Main bearings | forged steel crankshaft with 5 main bearings 53mm diameter, and 50.8 mm big end journal diameter | steel connecting rod, aluminium alloy pistons |
Materials | block: cast iron, 220 mm deck height | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers |
Cams/valves | 2 overhead camshafts (DOHC), belt driven | 2 valves per cyl - 8 valves total. 42.4 mm inlet valve diameter, 35.6 mm exhaust valve diameter. 2 coil springs per valve. 2/2V: 4 valves/cyl. - 16 valves total. |
Aspiration | natural, 1 x Solex C34CIC1 or Weber 34 DATR21, 2 x dual Dellorto 48mm carburetors | |
Ignition | electronic with rpm limiter, firing order 1-3-4-2, 12V battery | |
Cooling system | jacketed watercooled with pump, radiator, 252 mm diameter-4 blades fan and thermostat | 8.3 lt |
Lubrication system | wet sump | 4 lt |
Transmission | ||
Type | front wheel drive | Colotti 5 speed gearbox |
Gearbox ratios | 1st: 3.500/1 (42/12) 2nd: 2.235/1 (38/17) 3rd: 1.522/1 (35/23) 4th: 1.152/1 (38/33) 5th: 0.925/1 (37/40) R: 3.071/1 (43/14) |
1st: 3.500/1 (42/12) 2nd: 2.467/1 (37/15) 3rd: 1.895/1 (36/19) 4th: 1.522/1 (35/23) 5th: 1.280/1 (32/25) R: 3.071/1 (43/14) |
Diffrential ratio | 3.929/1 (55/14), 4.461/1 (58/13) | helical gears 40% limited slip front differential |
Clutch | dry single disc, 215mm diameter | |
Chassis-body | ||
Type | steel monocoque 828 AC chassis with front suspension subframe and rear suspension bridge. 2 door coupe steel bodyshell. group 4: extended plastic wheel arches | |
Front suspension | mc pherson strut with lower wishbone, coil spring, telescopic shock absorber and anti-roll bar | |
Rear suspension | mc pherson strut with one longitudinal and two transverse arms, coil spring, telescopic shock absorber and anti-roll bar | |
Steering system | rack and pinion (no servo). 10/1975+: hydraulic power assistance | 3.7 turns lock to lock |
Brakes | front solid discs with 251mm disk diameter and 2 piston calipers 45 and 34mm diameter. Rear solid discs with 251mm disk diameter and 1 piston caliper 36 mm diameter. Group 4: front ventilated disc 267mm diameter with 4 piston calipers 38.1mm diameter | dual circuit with vacuum servo |
Dimensions | ||
length: 3.995 m (157.3") | width: 1.660 m (65.4"), group 4: +100 mm | height: 1.285 m (50.6") |
wheelbase: 2.350 m (92.5") | front track: 1.406 m (55.3") 1.520 m (59.8") with 9R13 |
rear track: 1.392 m (54.8") 1.515 m (59.6") with 9R13 |
Rims - tires | 5.5J x 14", 7x13 (gravel), 9x13 (tarmac) | 195/50VR13 (gravel), 235/50VR13 (tarmac) |
Weight | 904 kg | |
Fuel tank | 52 lt |
9/1E (1976) for 2 lt engine
Engine | ||
---|---|---|
Type | Fiat Twin Cam (Lambredi), straight 4cyl, 4 stroke, petrol engine | located front transverse |
Capacity | 1994cc | WRC: 1994cc |
Bore x Stroke (mm) | 84.0 x 90.0 | |
Compression ratio | 8.9:1 | |
Output power - torgue | 119 HP @ 5500 rpm | 17.7 kgm @ 2800 rpm |
Main bearings | forged steel crankshaft with 5 main bearings 53mm main journal diameter, and 50.8 mm big end journal diameter | connecting rod length between centers 145mm, aluminium alloy pistons with 38.45 mm compression height |
Materials | block: cast iron, 229 mm deck height | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers |
Cams/valves | 2 overhead camshafts (DOHC), belt driven | 2 valves per cyl - 8 valves total. 42.4 mm inlet valve diameter, 35.6 mm exhaust valve diameter. 2 coil springs per valve |
Aspiration | natural, 1 x Solex C34CIC1 or Weber 34 DATR21 | |
Ignition | electronic with rpm limiter, firing order 1-3-4-2, 12V battery | |
Cooling system | jacketed watercooled with pump, radiator, 252 mm diameter-4 blades fan and thermostat | 8.3 lt |
Lubrication system | wet sump | 4 lt |
Results in WRC
Races
Works team:
- works: Lancia Marlboro
- works1: Lancia Alitalia
Season
Entry | Rally event | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Driver Codriver |
Team | POR | KEN | FIN | S.R | R.L | P.R | RAC | TdC | ||||||
Shekhar Mehta Martin Holmes |
works | 4th | |||||||||||||
Simo Lampinen John Davenport |
works | excl uded | 2nd | 4th | 10th | ||||||||||
Mauro Pregliasco Angelo Garzoglio |
works | eng ine | engine mountings | acci dent | |||||||||||
Amilcare Ballestrieri Geraint Phillips |
works | eng ine | |||||||||||||
Total points () |
24 | 7 | 9 | 7 | 1 | ||||||||||
Statistics | |||||||||||||||
Others starts/finishes | 9/4 | 2/1 | 2/1 | 2/1 | 2/1 | 1/0 |
Source
Rallye San Remo '74: Shekhar Mehta
Source
Robin Ulyate/Ian Smith in Safari rally '75
Source
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Drawings
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page revision: 108, last edited: 17 Jan 2019 20:59