Lancia Beta Monte Carlo group 4 (1975)
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Home » Rally Cars » Lancia Beta Monte Carlo
Lancia_Beta_Montecarlo.jpg Source Development chain
1974: Lancia Beta Coupe
1975: Lancia Beta Monte Carlo
1982: Lancia Rally 037
1984: Lancia Rally 037 Evo

Chassis numbers

Specifications

1940 units built
Click here and here and here for series I
Click here for series II
Manuals
Technical revue - part list

Group/Class 4/3 Homologation number: 643, 3074 and transfer group B and B202
Years active 1974 - 1975 Homologation start: 1/10/1975, 1/8/1976 and 1/8/1982
Homologation end: 31/12/1981 and 31/12/1987
Engine
Type Fiat Twin Cam (Lambredi), Type 134AS.000, straight 4 cyl, 4 stroke, petrol engine located middle transverse
Capacity 1994 cc WRC: 1994 cc
Bore x Stroke (mm) 84.0 x 90.0
Compression ratio 8.9:1
Output power - torgue 180-200 HP
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, 53.9mm big end bearing tunnel diameter, alluminium alloy piston with 38.45mm 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, 36.15 mm exhaust valve diameter. 2 coil springs per valve. 65º angle between inlet valve axis and exhaust valve axis.
1982, group B: 43.5mm inlet valve diameter, 38.5mm exhaust valve diameter
Aspiration natural, 1 x Weber 34 DATR200 carburetor
Ignition electronic with rpm limiter, firing order 1-3-4-2, 12V battery 45Ah, alternator 44A. Spark plugs Champion N7Y
Cooling system jacketed watercooled with pump, radiator, 250 mm diameter-4 blades fan and thermostat 14 lt
Lubrication system wet sump. Group 4: dry sump with 1 oil cooler 5 lt. Group 4: 15 lt
Transmission
Type front wheel drive Colotti 5 speed gearbox
Gearbox ratios 1st: 3.750/1 (45/12)
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)
Group 4: 1st: 2.312/1 (37/16)
2nd: 1.737/1 (33/19)
3rd: 1.391/1 (32/23)
4th: 1.148/1 (31/27)
5th: 0.965/1 (28/29)
R: 3.071/1 (43/14)
Diffrential ratio 3.714/1 (52/14), 4.461/1 (58/13). Group 4: 3.400/1 (51/15), 3.642/1 (51/14), 3.785/1 (53/14), 3.928/1 (55/14), 4.071/1 (57/14), 4.214/1 (59/14), 4.583/1 (55/12) helical gears 40% limited slip front differential
Clutch dry single disc, 215mm diameter
Chassis-body
Type steel monocoque Lancia 137 AS 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 Α wishbone, coil spring, telescopic shock absorber and anti-roll bar
Rear suspension mc pherson strut with lower Α wishbone, coil spring, telescopic shock absorber and anti-roll bar
Steering system rack and pinion (no servo). 10/1975+: hydraulic power assistance 19.7/1 or 18.4/1 ratio. 3.7 turns lock to lock, 1980, group 4: 3.4 or 2.9 turns
Brakes front solid discs with 227/251mm disk diameter and 1 piston caliper 48mm diameter. Rear solid discs with 227/251mm disk diameter and 1 piston caliper 38 mm diameter. Group 4: front/rear ventilated disc 251/267mm diameter with 2 piston calipers 38.1mm diameter.
1982: front ventilated discs 276mm diameter with 4 piston calipers 44.4 mm diameter, or 253mm disc diameter with 4 piston calipers 42mm diameter, rear ventilated discs 253mm diameter with 2 or 4 piston calipers 38mm diameter
dual circuit with vacuum Benditalia Hydrovac servo
Dimensions
length: 3.813 m (150.1") width: 1.690 m (66.5"), group 4: +100 mm height: 1.190 m (46.9")
wheelbase: 2.300 m (90.6") front track: 1.412 m (55.6") rear track: 1.456 m (57.3")
Rims - tires 5,5J x 13" or 14" 195/50VR13 (gravel), 235/50VR13 (tarmac)
Weight 870-920 kg
Fuel tank 60 lt

3/3V (1/1/1980) 1.8 lt engine

Engine
Type Fiat Twin Cam (Lambredi), Type 828 AC.1.000, straight 4cyl, 4 stroke, petrol engine located front transverse
Capacity 1756 cc WRC: 1756 cc
Bore x Stroke (mm) 84.0 x 79.2
Compression ratio 8.1:1
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 main journal diameter, and 50.8 mm big end journal diameter connecting rod length between centers 136mm, aluminium alloy pistons with 37.7 mm compression height
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. 41.8 mm inlet valve diameter, 36.15 mm exhaust valve diameter. 2 coil springs per valve
Aspiration natural, 1 x Weber 32 DATRA/13/102-B8 carburetor
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

Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN S.P GRE FIN CAN S.R TdC RAC
Giorgio Schön
Emilio Baj Macario
38th*
Statistics
Others starts/finishes 1/1 1/1

*Group 3 entries


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Lancia_Beta_Montecarlo_rear_20110416.jpg Source

Drawings

lancia-beta-montecarlo-cutaway.jpg Source
beta_montecarlo.jpg Source

Suspension

lancia-montecarlo-2-0-45975.jpg lancia-montecarlo-2-0-45976.jpg Source
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