Seat 1430 Especial 1800 group 2 (1974)
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1970: Seat 1430
1974: Seat 1430 Especial 1800

Specifications

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1756 cc
2 x Weber 44 IDF

Group/Class 2 Homologation number: 1662, 5594 - transfer group A, and A5009
Years active 1974-1977 Homologation start: 1/7/1974 and 1/4/1975 and 1/2/1982
Homologation end: 1/4/1975, 31/12/1981 and 31/12/1983
Engine
Type Fiat Twin Cam (Lambredi), Type FC 014.179, straight 4 cyl, 4 stroke, petrol engine located front longitudinal
Capacity 1756 cc WRC: 1756 cc
Bore x Stroke (mm) 84.0 x 79.2
Compression ratio 10:1
Output power - torgue 118 HP/ 86 KW @ 6.000 rpm 15,3 Nm @ 4000 rpm
Main bearings nodular cast iron crankshaft with 5 main bearings 53mm diameter, and 50.8mm big end bearing journal diameter connecting rod length between centers 136mm, big end bearing tunnel diameter 54mm, aluminium alloy Al Gas10 piston 47.3mm piston height
Materials block: cast iron Gh26 cylinderhead: cross-flow Al-Si 62 Fsc Nat aluminium alloy with hemispherical combustion chambers
Cams/valves 2 overhead camshafts (DOHC), belt driven 2 valves/cyl. - 8 valves total. 41.4mm (1977: 42.4mm) inlet valves diameter, 36mm exhaust valves diameter. 2 coil springs per valve. Group 2, (ext. 10/9V of 1/10/1975): 4 valves per cyl - 16 valves total
Aspiration natural, 1 x Weber 34 DMS or Solex C34 EIES-4 carburetor
Ignition with contact breakers, firing order 1-3-4-2. Spark plugs Marcill CW-8 LP 12V battery
Cooling system jacketed watercooled with pump, radiator, 252 mm diameter-4 blades fan and thermostat 7.5 lt
Lubrication system wet sump. 1978, group 2: dry sump 4 lt. 1978, group 2: 15 lt
Transmission
Type rear wheel drive 4 or 5 speed manual gearbox
Gearbox ratios constant: 1.611/1 (29/18)
1st: 3.797/1 (33/14)
2nd: 2.175/1 (27/20)
3rd: 1.409/1 (21/24)
4th: 1.000/1 (-)
R: 3.652/1 (34/15)
1977, group 2: constant: 1.611/1 (29/18)
1st: 2.718/1 (27/16)
2nd: 1.969/1 (22/18)
3rd: 1.531/1 (19/20)
4th: 1.224/1 (18/25)
5th: 1.000/1 (-)
R: 3.652/1 (34/15)
1982, group A: 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: 3.520/1 (34/15)
1982, group A: 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 3.90/1 (39/10), 4.777/1 (43/9).
1976, group 2: 5.375/1 (43/8), 4.444/1 (40/9), 4.300/1 (43/10). 1978: 4.1/1 (41/10)
hypoid spiral bevel gears limited slip rear differential
Clutch dry single plate, 215mm diameter
Chassis-body
Type steel monocoque Seat FU chassis with roll-cage. 4 door saloon steel bodyshell. Group 2: plastic extended wheel arches and front/rear spoilers
Front suspension double wishbones, coil springs (1978, d13.5 x 7.25 coils, 337 lbr/m), telescopic shock absorbers and anti roll bar d20/21/22 mm
Rear suspension live axle, 4 radius arms, panhar rod, coil spring (1978, d12.5 x 6.75 coils, 422 lbr/m) with telescopic shock absorbers and anti roll bar d20
Steering system worm and roller. Group 2: rack and pinion ratio 16.4/1, 2.8 turns lock to lock. Group 2: 16/1 with 3 turns lock to lock
Brakes solid disks all around, 227 mm diameter, front 1 piston caliper 48 mm diameter. Rear 1 piston caliper 34 mm diameter.
Group 2: front solid discs with 247 mm disc diameter and 2 piston calipers 48mm diameter, or ventilated discs 250 mm diameter with 2 piston calipers 50.8 mm diameter, or 4 piston calipers 38 mm diameter.
1977, group 2: 4 piston calipers 38mm diameter, and 2 piston calipers 50.6mm diameter
1978, group 2: ventilated discs all around 227mm diameter
dual circuit with vacuum servo
Dimensions
length: 4.053 m (159.5") width: 1.611 m (63.4"), group 2: +100 mm height: 1.420 m (55.9")
wheelbase: 2.420 m (95.3") front track: 1.330 m (52.4") rear track: 1.300 m (51.2")
Rims - tires 5 or 5.5 x 13"
Weight 960 kg 175/70 HR13", 185/60 R13"
Fuel tank 39 lt. 1978, group 2: 74 lt

Results in WRC

Races

Works team: Seat Competition

Season
Entry Rally event
Driver
Codriver
Team M.C SVE KEN GRE MAR POR FIN S.R TdC RAC
Jaime Valls
Francisco Romaozinho
dnf
Salvador Canellas (Sr)
Francisco Romaozinho
rear suspe nsion
Ricardo Munoz
Jose Zorita
gear box
Statistics
Others starts/finishes 3/0 1/0 2/0

SEAT-1430-1800-oficial-Zanini-Montecarlo-76.jpg Source
Seat 1430/1800 group 4 with Antonio Zanini in Monte Carlo rally '76
seat-1430-1800-fu-10-autentico_2.jpg Source
seat-1430-1800-03.jpg Source

Drawings

Seat1430POTEN3.jpg Source
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