VolksWagen 1302/1303 S group 2 (1970)
Home » Rally Cars » VW 1302/1303 S
Source
Specifications
Parts list
Click here and here for street version
| Group/Class | 2 | Homologation number: 5364 | |||
| Years active | 1971-1973 | Homologation start: 1/10/1970 Homologation end: 31/12/1981 |
|||
| Engine | |||||
|---|---|---|---|---|---|
| Type | VW AD type 2, boxer flat 4 cyl (180o), 4 stroke, petrol engine | located behind rear axle, longitudinally | |||
| Capacity | 1584 cc | WRC: 1584 cc | |||
| Bore x Stroke (mm) | 85.5 x 69.0 | ||||
| Compression ratio | 7.5:1, 9.1:1 | ||||
| Output power - torgue | 50 HP / 4000 rpm 120-128 HP / 7000 rpm |
10.8 kgm / 2800 rpm | |||
| Main bearings | 5 of 50.9mm diameter | big end bearing diameter 45.6mm, aluminium alloy piston 39.4 mm piston height | |||
| Materials | block: magnesium or aluminium alloy | cylinderhead: 2 x aluminium alloy with dual ports | |||
| Cams/valves | single camshaft in center of block and below crankshaft with overhead valves (OHV), gear driven | 2 valves/cyl. - 8 valves total. 35.6mm inlet valves diameter, 32.1mm exhaust valves diameter (St35 GZF). 1 coil spring per valve | |||
| Aspiration | natural, 1 x Solex 34 PICT or 1 x Weber 32 DHS-1 carburetor | ||||
| Ignition | with contact breakers, firing order 1-4-3-2 | 12V battery, 45 Ah | |||
| Cooling system | air cooled with 28 blade centrifugal fan, guide vanes, thermostat and cut-off air-flaps | ||||
| Lubrication system | wet sump with 1 oil cooler click here. 1971, Group 2: dry sump with three gear-oil pump | 2.5 lt | |||
| Transmission | |||||
| Type | rear wheel drive | VW 4 speed manual gearbox. 1971, Group 2: Porsche 914.300.012.13, 5 speed manual gearbox | |||
| Gearbox ratios | 1st: 3.80/1 (38/10) 2nd: 2.06/1 (35/17) 3rd: 1.26/1 (63/50) 4th: 0.88/1 (53/60) R: 3.61/1 (43/14) |
1971, Group 2: 1st: 3.091/1 (34/11) 2nd: 1.889/1 (34/18) 3rd: 1.261/1 (29/23) 4th: 0.926/1 (27/25) 5th: 0.710/1 (22/31) R: 3.127/1 (43/20x36/11) |
|||
| Diffrential ratio | 4.125 (33/8), 4.375/1 (35/8), 1971, Group 2: 4.429/1 (31/7) | spiral bevel gears limited slip rear differential | |||
| Clutch | dry single plate, 200mm diameter | ||||
| Chassis-body | |||||
| Type | steel monocoque VW chassis with roll-cage. 2 door saloon "beetle" steel bodyshell. Group 2: extended wheel arches | ||||
| Front suspension | Macpherson strut with coil springs, telescopic shock absorbers and anti roll bar | ||||
| Rear suspension | semi trailing arm with coil springs, telescopic shock absorbers and anti roll bar | ||||
| Steering system | worm and roller. 1974: rack and pinion | ratio 16.4/1, 2.65 turns lock to lock | |||
| Brakes | front solid disks 277 mm diameter with 2 piston calipers 42 mm diameter, rear drums 230 mm diameter with 1 double piston caliper 17.5 mm diameter. 1972: 248 mm drum diameter with 1 double piston caliper 22.3 mm diameter | dual circuit | |||
| Dimensions | |||||
| length: 4.080 m (160.6") | width: 1.585 m (62.4"), Group 2: +100mm | height: 1.500 m (59.1") | |||
| wheelbase: 2.420 m (95.3") | front track: 1.379 m (54.3") | rear track: 1.351 m (53.2") | |||
| Rims - tires | 4J or 4.5J x 15", 1972+: 5.5 x 15" | 155 x 15" | |||
| Weight | 850 kg | front rear distribution, 40-60% | |||
| Fuel tank | 45 lt | ||||
| Drag coefficient | 0.41 | ||||
Results in WRC
Races
Works team: VW Porsche Salzburg / Bosch Racing Team
Season
| Entry | Rally event | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | M.C | SVE Entry list |
S.R | KEN | MAR | A | GRE | RAC Entry list |
|||||||
| Klaus Russling Franz Mikes |
works | 3rd | ||||||||||||||
| Gernot Fischer Herbert Kohlweis |
works | 4th | ||||||||||||||
| Leopold Bosch Walter Starmann |
works | 6th | ||||||||||||||
| Joginder Singh Reinhard Knoll |
works | stee ring | ||||||||||||||
| Edgar Herrmann Manfred Stepany |
works | stee ring | ||||||||||||||
| Gerald Malat Walter Langeder |
works | dnf | ||||||||||||||
| Janger Wessiak |
dnf | |||||||||||||||
| Lennart Börjesson Thomas Fahlström |
? | |||||||||||||||
| Erik Hansen Juul Mathiasen |
? | |||||||||||||||
| Hans-Peter Krakhofer Monika Röthlich |
ÖAMTC-ZV Krems RRT | 11th | ||||||||||||||
| Paul Springer Gottfried Pikel |
dnf | |||||||||||||||
| Franz Hofer M. Stoitzner |
VW-Günther Perg | dnf | ||||||||||||||
| Brian Addison Joseph McKerrell |
? | |||||||||||||||
| Total points () |
20 | 20 | ||||||||||||||
| Statistics | ||||||||||||||||
| Others starts/finishes | 13/3 | 1/0 | 2/0 | 9/3 | 1/0 | |||||||||||
Source
Source
Source
SourceOil system
SourceCooling fins
Drawings
Source
Source
Source
Engine
Source
Source1. Fan housing
2. Coil
3. Oil Cooler
4. Intake manifold
5. Fuel pump
6. Distributor
7. Oil pressure switch
8. Valve
9. Cylinder
10. Piston
11. Oil pressure switch
12. Fan
13. Oil filter
14. Intake manifold pre-heater pipe
15. Connecting rod
16. Spark plug
17. Cylinder head
18. Thermostat
19. Rocker arm
20. Pushrod
21. Heat exchange
22. Valve lifter
23. Carburetor
24. Generator
25. Flywheel
26. Crankshaft
27. Oil pump
28. Camshaft
29. Oil strainer
30. Clutch
Chassis
Source
SourceFront Suspension of 1303 (Mac Pherson)
SourceSwing axle and Independent Rear Suspension (IRS)
page revision: 133, last edited: 30 May 2021 06:40