VW Golf Mk I GTi 1.8 group A (1983)
 Source |
Development chain 1976: VW Golf Mk I GTi 1983: VW Golf Mk I GTi 1.8 1984: VW Golf Mk II GTi 1986: VW Golf Mk II GTi 16V 1990: VW Golf Mk II Rallye G60 1993: VW Golf Mk III GTi 16V |
Specifications
| Group/Class | A/7 | Homologation number: A5096 | |
| Years active | 1983 - 1984 | Homologation start: 1/1/1983 Homologation end: 31/12/1989 |
|
| Engine | |||
|---|---|---|---|
| Type | VW EA827 R4, code DX, straight 4 cyl, 4 stroke, petrol engine | located front transverse with 15o rear inclination | |
| Capacity | 1781 cc | WRC: 1781 cc | |
| Bore x Stroke (mm) | 81.0 x 86.4 | ||
| Compression ratio | 10.0:1. 11.0:1 | ||
| Output power - torgue | 170 HP @ 7000 rpm | 20.4 kgm (200 Nm) @ 6250 rpm | |
| Main bearings | die-forged steel crankshaft with 5 main bearings 54mm diameter, big end journal diameter diameter 47.8mm | connecting rod length between centers 144mm, big end bearing tunnel diameter 50.6mm, aluminium alloy piston with 33.3mm compression height, 1.5/1.75/3mm piston rings, 20mm pin diameter | |
| Materials | block: grey cast iron, 220mm deck height, 277.8mm height, 88mm bore spacing | cylinderhead: reverse flow aluminium alloy hemispherical combustion chambers with vertical valves, 132.9mm height | |
| Cams/valves | single overhead camshaft (SOHC), belt driven | 2 valves/cyl. - 8 valves total. 40.1mm inlet valve diameter, 33.3mm exhaust valve diameter. 0o angle between inlet/exhaust valve axis and vertical. 2 coil springs per valve | |
| Aspiration | natural, Bosch K-jetronic mechanical multipoint fuel injection | ||
| Ignition | electronic, firing order 1-3-4-2 | ||
| Cooling system | jacketed watercooled with pump, radiator, 280mm-4 blades fan and thermostat | 6.5 lt | |
| Lubrication system | wet sump with 1 oil cooler | 3.5 lt | |
| Transmission | |||
| Type | front wheel drive | VW 020, 5 speed gearbox | |
| Gearbox ratios | 1st: 3.455/1 (38/11) 2nd: 2.118/1 (36/17) 3rd: 1.444/1 (39/27) 4th: 1.129/1 (35/31) 5th: 0.911/1 (31/34) R: 3.167/1 (38/12) |
1st: 2.500/1 (35/14) 2nd: 1.789/1 (34/19) 3rd: 1.423/1 (37/26) 4th: 1.172/1 (34/29) 5th: 1.031/1 (33/32) R: 3.167/1 (38/12) |
|
| Diffrential ratio | 3.647/1 (62/17), 3.895/1 (74/19), 4.529/1 (77/17). 1985: 3.667/1 (66/18), 3.938/1 (63/16), 4.200/1 (63/15), 4.640/1 (65/14), 5.077/1 (66/13) |
helical gears limited slip front differential | |
| Clutch | dry single disc, 210mm diameter | ||
| Chassis-body | |||
| Type | steel monocoque Type 17DX2 chassis of VW A1 platform with 14kg AlZnMn1 roll-cage. 3 or 5 door hatchback steel bodyshell with steel bonnets/doors and steel supported PVC bumpers | ||
| Front suspension | mac pherson strut with lower 'L' wishbone, coil springs, telescopic gas shock absorbers and anti roll bar | ||
| Rear suspension | torsion beam axle with trailing arm, coil spring, telescopic gas shock absorbers and adjustable anti roll bar | ||
| Steering system | rack and pinion with or without hydraulic power assistance | 3.25 turns lock to lock, 20.8/1 or 16.8/1 ratio | |
| Brakes | Front ventilated discs 239mm diameter with 1 cast iron piston caliper 48mm diameter, rear drums 180/200mm diameter with 1 double cast iron piston caliper 17.6mm diameter. Lokcheed: Front ventilated discs 239/260/266/280mm diameter with 4 aluminium piston calipers 38.1mm diameter, rear ventilated discs 239/260/266/280mm diameter with 2 aluminium piston calipers 42.8mm diameter. Girling: Front ventilated discs 239/260/266/280/256mm diameter with 1 or 4 cast aluminium piston calipers 38.1/48/54mm diameter, rear solid or ventilated discs 240/260/266/225.5mm diameter with 4 or 2 or 1 cast aluminium piston calipers 33.9/36/42.8mm diameter. |
dual circuit with VW vacuum servo, adjustable ratio split front to rear | |
| Dimensions | |||
| length: 3.815 m (150.2") | width: 1.630 m (64.2") | height: 1.395 m (54.9") | |
| wheelbase: 2.400 m (94.5") | front track: 1.404 m (55.3") | rear track: 1.372 m (54.0") | |
| Rims - tires | 5.5" - 6" - 7" x 13" or 14" | 175/70HR13 or 185/60R14 | |
| Weight | 840-880 kg | ||
| Fuel tank | 42 lt (steel), or 45 lt (aluminium) | ||
Results in WRC
Races
Works team: Volkswagen Motorsport
Drawings
Source
page revision: 94, last edited: 22 Feb 2019 06:28