Fiat 125 group 2 (1967)
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Manual

Specifications

603,877 units built
Click here for street version

Group/Class 2 Homologation number: 5166 (125) and 5254 (125 S)
Years active 1967-1973 Homologation start: 1/7/1967 (125) and 1/1/1969 (125S)
Homologation end: 31/12/1977
Engine
Type Fiat Twin Cam (Lambredi), 125.A.000 (Fiat 125) and 125.B.000 (Fiat 125S) straight 4 cyl, 4 stroke, petrol engine located front longitudinal
Capacity 1608 cc WRC: 1608 cc
Bore x Stroke (mm) 80.0 x 80.0
Compression ratio 8.8:1
Output power - torgue 100 HP / 6200 rpm 13.3 kgm (126 Nm) / 4000 rpm
Main bearings 5 of 50.9mm diameter connecting rod length between centers 136mm, big end bearing diameter 48.3mm, aluminium alloy piston 41.95 mm piston height
Materials block: cast iron cylinderhead: aluminium alloy
Cams/valves 2 overhead camshafts (DOHC), belt driven 2 valves/cyl. - 16 valves total. 41.4mm inlet valves diameter, 36mm exhaust valves diameter. 2 coil springs per valve
Aspiration natural, 1 x Weber 34 DCH4 or 1 x Solex C34 PAIA6 carburetor,
1970: 1 x Weber 34 DCHE/4 or 1 x Solex C34 PAIA10
1972: Weber 34DCHE20 or Solex C34 PAIA31 or 33
Ignition with contact breakers, firing order 1-3-4-2 12V battery
Cooling system watercooled 7.5 lt
Lubrication system wet sump 3.75 lt
Transmission
Type rear wheel drive 5-speed manual gearbox
Gearbox ratios constant: 1.556/1 (28/18)
1st: 3.667/1 (33/14)
2nd: 2.100/1 (27/20)
3rd: 1.361/1 (21/24)
4th: 1.000/1 (-)
5th: 0.881/1 (17/30)
R: 3.526/1 (34/15)
constant: 1.611/1 (29/18)
1st: 3.797/1 (33/14)
2nd: 2.175/1 (27/20)
3rd: 1.410/1 (21/24)
4th: 1.000/1 (-)
5th: 0.913/1 (17/30)
R: 3.650/1 (34/15)
1969 (group 2): constant: 1.474/1 (28/19)
1st: 3.474/1 (33/14)
2nd: 1.989/1 (27/20)
3rd: 1.289/1 (21/24)
4th: 1.000/1 (-)
5th: 0.835/1 (17/30)
R: 3.340/1 (34/15)
1970: constant: 1.474/1 (28/19)
1st: 3.242/1 (33/15)
2nd: 1.825/1 (26/21)
3rd: 1.289/1 (21/24)
4th: 1.000/1 (-)
5th: 0.835/1 (17/30)
R: 3.340/1 (34/15)
1971: constant: 1.238/1 (26/21)
1st: 2.724/1 (33/15)
2nd: 1.857/1 (27/18)
3rd: 1.351/1 (24/22)
4th: 1.000/1 (-)
5th: 0.840/1 (19/28)
R: 2.806/1 (34/15)
Diffrential ratio 4.1(41/10), 5.375 (43/8),
1970+: 4.444/1 (40/9)
hypoid spiral bevel gears limited slip rear differential
Clutch dry single plate, 200mm 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 double wishbones, coil springs, telescopic shock absorbers and anti roll bar
Rear suspension live axle with semi-eliptic leaf springs
Steering system worm and roller 3 turns lock to lock
Brakes solid disks all around, 227 mm diameter front 1 piston caliper 48 mm diameter, rear 1 piston caliper 39 mm diameter dual circuit
Dimensions
length: 4.223 m (166.2") width: 1.611 m (63.4") height: 1.420 m (55.9")
wheelbase: 2.505 m (98.6") front track: 1.313 m (51.7") rear track: 1.291 m (50.8")
Rims - tires 5-5.5-6 x 13"
Weight 980 - 1020 kg
Fuel tank 50 lt

Results in WRC

Races

Works team: FIAT

Season
Entry Rally event
Driver
Codriver
Team M.C SVE
Entry list
S.R KEN A GRE RAC
entry list
Pino Ceccato
Helmut Eisendle/ Arturo Zanuccoli
works 17th 7th eng ine
Alberto Smania
Giuseppe Zanchetti/ Daniele Audetto
works 20th 6th diffe rential
Renato Sonda
Turri
35th 11th
Giulio Bisulli
Arturo Zanuccoli
route error acci dent
Ferdinando Tecilla
Bruno Scabini
10th
Pagliero
Varese
dnf
Verini
Flear
dnf
Åke Nilsson
Lars-O Hammergård
dnf
Zambelli
Pizzo
15th
Myrteza Dani
Gerhard Haidinger
Bosch Racing Team Wien dnf
Håkan Lindberg
Bo Reinicke
5th
Total points
()
16 10 6
Statistics
Others starts/finishes 17/11 6/3 1/0 6/5 1/0 3/1

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fiat-125-rally.jpg Source
GMK-087FIAT125SRALLYM.CARLO1968.JPG Source
Monte Carlo rally '68

Drawings

fiat125section_300.jpg Source
fiat_125_special_1972-41973.jpg Source

Suspension

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