Fiat 131 Abarth group 4 (1976)
gr.jpg
gb.jpg

Home » Rally Cars » Fiat 131 Abarth

12db0f204543ffde00f9e91b4d0_prev.jpg Source

Drifting: see video
In rallies: see video

Specifications

400 units built
Click here for 131 Racing
Source1, Source2
Group/Class 4/3 Homologation number: 647
Years active 1976-1981 Homologation start: 1/4/1976
Engine
Type Fiat Twin Cam (Lambredi), Type 232CIG, 131AR.000, straight 4cyl, 4 stroke, petrol engine located front longitudinal
Capacity 1995 cc WRC: 1995 cc
Bore x Stroke (mm) 84.0 x 90.0
Compression ratio 10.7:1, 7/1977+: 11.0:1
Output power - torgue 215 - 230 HP / 7000 rpm 23.0 kgm (226 Nm) / 5600 rpm
Main bearings 5 of 53.06mm diameter connecting rod length between centers 145mm, big end bearing diameter 50.85mm
Materials block: cast iron cylinderhead: aluminium alloy
Cams/valves 2 overhead camshafts (DOHC), belt driven 4 valves/cyl. - 16 valves total. 34.5mm inlet valves diameter, 28.5mm exhaust valves diameter. 2 coil springs per valve
Aspiration natural, 1 x double Weber 34 ADF carburetor, Bosch-KugelFischer mechanical fuel injection
Ignition with contact breakers and Abarth spark plugs, 7/1977+: Magneti Marelli electronic with transistor, firing order 1-3-4-2 12V-24Ah-150A battery, 12V-1,2kW starter, 12V-1000W alternator
Cooling system watercooled 7.5 lt
Lubrication system wet sump. 1977+: dry sump with oil cooler 6.6 lt, 1977+: 15 lt
Transmission
Type rear wheel drive ZF Colotti T.209, 1/1977+: Cima 5-speed manual gearbox
Gearbox ratios constant: 1.269/1 (33/26)
1st: 3.612/1 (37/13)
2nd: 2.045/1 (29/18)
3rd: 1.357/1 (31/29)
4th: 1.000/1 (-)
5th: 0.870/1 (24/35)
R: 3.244/1 (46/18)
constant: 1.043/1 (24/23)
1st: 2.156/1 (31/15)
2nd: 1.565/1 (27/18)
3rd: 1.242/1 (25/21)
4th: 1.000/1 (-)
5th: 0.802/1 (20/26)
R: 2.666/1 (46/18)
constant: 1.043/1 (24/23)
1st: 2.021/1 (31/16)
2nd: 1.537/1 (28/19)
3rd: 1.185/1 (25/22)
4th: 1.000/1 (-)
5th: 0.876/1 (21/25)
R: 2.666/1 (46/18)
1977+, constant: 1.045/1 (23/22)
1st: 2.654/1 (33/13)
2nd: 1.895/1 (29/16)
3rd: 1.568/1 (27/18)
4th: 1.244/1 (25/21)
5th: 1.000/1 (-)
R: 2.671/1 (46/18)
Diffrential ratio 6.83 (41/6), 6.42 (45/7), 6.143 (43/7), 5.375 (43/8), 4.875 (39/8), 4.625 (37/8), 4.444 (40/9), 4.3 (43/10), 3.9 (39/10), 3.63 (40/11)
1977+: 5.714/1 (40/7)
1978+: 5.125/1 (41/8)
hypoid spiral bevel gears limited slip rear differential
Clutch dry single plate, 230mm diameter
Chassis-body
Type steel monocoque 131AR chassis with roll-cage. 2 door saloon steel bodyshell with plastic extended wheel arches and front/rear spoilers
Front suspension McPherson strut with lower transverse arm and stabilizer, progressive coil springs and telescopic shock absorbers
Rear suspension mcpherson strut with lower semi-trailing L wishbone and 1 transverse control rod, progressive coil springs (220/110lbs), and telescopic shock absorbers (see picture)
Steering system rack and pinion 2.85 turns lock to lock
Brakes front ventilated disks 300/275 mm diameter with 2 piston calipers, or 2 calipers x 2 piston calipers per disk. Rear ventilated disks 252mm diameter with 4 or 2 piston calipers dual circuit, adjustable ratio split front to rear
Dimensions
length: 4.181 m (164.6") width: 1.720 m (67.7") - 1.820 m (73.6") height: 1.360 m (53.5")
wheelbase: 2.490 m (98.0") front track: 1.461 m (57.5") - 1.520 m (59.8") rear track: 1.397 m (55.0") - 1.492 m (58.7")
Rims - tires gravel: 7" x 15", tarmac: front 10" x 15" and rear 11" x 15" MS 35 185/70-15 or Pirelli P7 205/60VR-15, P7 285/35VR15
Weight 980 - 1020 kg 50/50% front to rear distribution
Weight/power 4.3 kg/HP
Fuel tank 50 lt. 1979+: 60 - 90 lt

Results in WSCC

Season
Group 2
Fiat 131 Racing 2.0
Car entry Car number/ result
Daytona Brands Hatch Mugello Monza Silver stone Nurb Le Mans Watkins Glen Mosport Valle lunga Dijon
Team 24h 6h 6h 1000km 6h 6h 24h 6h 6h 6h 1000km
East Belgian Racing Team ASBL #92, in entry list
Statistics
Works Starts/finishes 0/0
Driver Team entries and car number
East Belgian Racing Team ASBL
Léon Clohse 92
Emmanuel Remion 92
Alexandre Hüweler 92

Results in WRC

Races

Works team:

  • works: Olio Fiat (1976-1977)
  • works1: Fiat Alitalia (1978-1979)
  • works2: Wreath Fiat (1980-1981)
Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN GRE MAR FIN S.R TdC RAC
Markku Alén
Ilkka Kivimäki
works 12th 1st* acci dent diff eren tial
Maurizio Verini
Ninni Russo
works diff eren tial dnf gear box
Fulvio Bacchelli
Francesco Rossetti
works susp ens ion acci dent 11th
Roberto Cambiaghi
Emanuele Sanfront
diff eren tial
Mullet dnf
Total points
()
10 10
Statistics
Others starts/finishes 12/3 3/1 1/1 5/0 3/1

*Autonovo Oy entry


Fiat_131_Abarth_010.jpg Source

Information and articles

Article from 4T 129, 6/1981

Click here

Article from 4T 82, 7/1977

Click here

1975_fiat_131-pic-8961119613944774608.jpeg Source

Drawings

14749d1112292474-fiat-lancia-twin-cam-engine-history-fiat-131-abarth.gif Source
fiatabarth131.jpg
131Abarthlinesmall.jpg

Suspension

131frnt.jpg Source
sx6.jpg
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License