Saab 99 Turbo group 2 (1978)
 Source |
Development chain 1966: Saab 96 V4 1971: Saab 96 V4 1.8 1973: Saab 99 EMS 1978: Saab 99 Turbo |
Specifications
| Group/Class | 2 | Homologation number: 652, 5722-trasfer group A, 1695, 658, 5771-transfer group A and A5005 |
| Years active | 1978-1982 | Homologation start: 2/1/1978, 2/10/1978, 2/1/1979, 2/2/1979, 2/1/1980 and 1/2/1982 Homologation end: 2/10/1978, 1/1/1982, 2/1/1980, 2/2/1979, 1/1/1982 and 1/1/1989 |
| Engine | ||
|---|---|---|
| Type | Saab B Turbo B202, straight 4 cyl, 4 stroke | located front longitudinal with 45o inclination to the driver's side |
| Capacity | 1985 cc | WRC: x 1.4 = 2780 cc 1988: x 1.7 = 3375 cc |
| Bore x Stroke (mm) | 90.0 x 78.0 | |
| Compression ratio | 7.2:1 | |
| Output power - torgue | 270 HP / 6000 rpm | 34.7 kgm (340 Nm) / 5000 rpm |
| Main bearings | forged steel crankshaft with 5 main bearing's journal 58mm diameter, and 52mm big end journals diameter | connecting rod distance center to center 134mm with 56mm big end bearing tunnel diameter, aluminium piston with 40mm Compression Height |
| Materials | block: cast iron with cast iron cylinder liners | cylinderhead: cross flow aluminium alloy heads with "wedge" shape combustion chambers |
| Cams/valves | single overhead camshaft (SOHC), chain driven | 2 valves / cyl - 8 valves total, 42 mm inlet valve diameter, 35.5 mm exhaust valve diameter sodium filled, 1 coil spring per valve |
| Aspiration | Garrett TC030 turbocharger with 11 blades inconell turbine with 45.7/58.9mm in/out diameter, and 6+6 blades aluminium alloy compressor with 37.7/60.2mm in/out diameter. Bosch K-jetronic mechanical multi point fuel injection. 1980: turbine with 48.6/58.9mm in/out diameter, compressor with 46.4/60.2mm in/out diameter |
|
| Ignition | electronic, firing order 1-3-4-2 | |
| Cooling system | jacketed watercooled with pump, radiator, 282 mm diameter-11 blades fan and thermostat | 8 lt |
| Lubrication system | wet or dry sump with oil cooler | 4 lt |
| Transmission | ||
| Type | front wheel drive | 4 speed gearbox with 4 chain constant input, located below engine |
| Gearbox ratios | constant: 1.83/1 (33/18) 1st: 3.44/1 (30/16) 2nd: 2.07/1 (26/23) 3rd: 1.39/1 (22/29) 4th: 1.00/1 R: 3.78/1 (33/16) |
constant: 1.174/1 (27/23) 1st: 2.20/1 (30/16) 2nd: 1.53/1 (26/20) 3rd: 1.22/1 (25/24) 4th: 1.00/1 R: 2.42/1 (33/16) |
| Diffrential ratio | 3.89/1 (35/9), 5.17/1 (31/6), 1979: 4.857/1 (34/7) | ZF spiral bevel gears limited slip front differential |
| Clutch | dry single plate 219mm diameter | |
| Chassis-body | ||
| Type | steel monocoque chassis with roll-cage. 2 door combi coupe steel bodyshell, with plastic front and rear bumbers | |
| Front suspension | double wishbones with pivot mounted coil springs, telescopic gas shock absorbers and anti roll bar | |
| Rear suspension | lightweight dead rigid axle located by twin trailing radius arms and panhard rod, coil springs, telescopic gas shock absorbers and anti roll bar | |
| Steering system | rack and pinion (no servo) | 18.6/1 ratio, 3.4 turns lock to lock |
| Brakes | front solid discs 270mm diameter with 1 piston caliper 54mm diameter. Rear solid discs 270mm diameter with 2 piston calipers 30mm diameter. Group 2: front ventilated discs 276mm diameter with 4 x Teves 2L4-34 piston calipers 34mm diameter, or 280mm disc diameter with 4 piston calipers 38mm diameter, rear solid discs 250mm diameter with 2 x Teves LC1 33W piston calipers 33mm diameter. Handbreak acting on front wheels |
dual circuit with Girling vacuum servo, pressure limiter |
| Dimensions | ||
| length: 4.421 m (174.0") | width: 1.690 m (66.5") | height: 1.440 m (56.7") |
| wheelbase: 2.473 m (97.4") | front track: 1.410 m (55.5") | rear track: 1.430 m (56.3") |
| Rims - tires | 5.5" x 15" | 175/70 HR15 |
| Weight | 1080-1155 kg | |
| Weight/power | 4.0 kg/HP | |
| Fuel tank | 55 lt. 1982: 70 lt | |
Results in WRC
Races
Works team: Saab-Scania
Season
| Entry | Rally event | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | MC | SVE Entry list |
KEN | POR | GRE | FIN | CAN | S.R | CdI | TdC | RAC | ||||
| Stig Blomqvist Hans Sylvan |
works | drive shaft | ||||||||||||||
| Per Eklund Bjorn Cederberg |
works | drive shaft | ||||||||||||||
| Statistics | ||||||||||||||||
| Others starts/finishes | 2/0 | 2/0 | ||||||||||||||
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Drawings
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Engine
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page revision: 113, last edited: 30 Jan 2019 18:33
