Group/Class	A/8	Homologation number: A 5477
Years active	1993	Homologation start: 1/1/1993 Homologation end: 31/12/2004
Engine
Type	GM Family II C20LET, straight 4cyl, 4 stroke, petrol engine	located front transverse with 7.5^o front inclination
Capacity	1998 cc	WRC: x 1.7 = 3397 cc
Bore x Stroke (mm)	86.0 x 86.0
Compression ratio	8.0:1
Output power - torgue	280 HP / 6500 rpm	40.8 kgm (400 Nm) / 4500 rpm
Main bearings	5 of 58mm diameter	connecting rod length 143mm, big end bearing internal diameter 52.6mm
Materials	block: cast iron, 271mm height	cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers, 135.5mm height
Cams/valves	2 overhead camshafts (DOHC), belt driven	4 valves/cyl. - 16 valves total. 33.1mm inlet valves diameter, sodium filled exhaust valves 29.1mm diameter. 23^o angle between inlet valves and vertical, 23^o angle between exhaust valves and vertical. 1 coil spring per valve
Aspiration	KKK K16 turbocharger (inconel turbine 55.2mm diameter, aluminium compressor 60.9mm diameter) with air/air intercooler and 38mm turbo restrictor, Bosch Motronic M2.7 electronic fuel injection 1995+: 34mm turbo restrictor fitted		pressure:
Ignition	electronic	12v 55Ah battery, 70A alternator, 1.4kW starter motor
Cooling system	watercooled	7.5 lt
Lubrication system	wet sump with 1 oil cooler	4.5 lt
Transmission
Type	four wheel drive	X-trac 6 speed manual gearbox. 1994+: X-trac 6 speed sequential gearbox
Gearbox ratios	1st: 3.571/1 (50/14) 2nd: 2.160/1 (54/25) 3rd: 1.455/1 (48/33) 4th: 1.103/1 (43/39) 5th: 0.886/1 (31/35) 6th: 0.735/1 (36/49) R: 3.321/1 (42/14 x 31/28)	1st: 3.417/1 (41/12) 2nd: 2.500/1 (35/14) 3rd: 1.941/1 (33/17) 4th: 1.550/1 (31/20) 5th: 1.304/1 (30/23) 6th: 1.087/1 (25/23) R: 2.692/1 (15/13 x 35/15)	1st: 3.077/1 (40/13) 2nd: 2.333/1 (35/15) 3rd: 1.824/1 (31/17) 4th: 1.476/1 (31/21) 5th: 1.261/1 (29/23) 6th: 1.037/1 (28/27) R: 2.692/1 (15/13 x 35/15)
Diffrential ratio	Front: 3.722/1 (67/18), 2.550/1 (51/20), 2.650/1 (53/20), 2.737/1 (52/19), 2.842/1 (54/19), 2.944/1 (53/18), 3.055/1 (55/18), 3.176/1 (54/17), 3.273/1 (36/11), 3.294/1 (56/17), 3.737/1 (71/19), 3.769/1 (49/13), 3.846/1 (50/13), 3.867/1 (58/15), 3.944/1 (71/18), 4.000/1 (48/12), 4.071/1 (57/14), 4.083/1 (49/12), 4.167/1 (50/12), 4.188/1 (67/16), 4.200/1 (63/15), 4.214/1 (59/14), 4.500/1 (63/14), 4.545/1 (50/11), 4.667/1 (56/12), 4.786/1 (67/14), 4.846/1 (63/13), 4.923/1 (64/13), 5.000/1 (55/11), 5.091/1 (56/11), 5.182/1 (57/11), Transfer box: 0.730/1 (27/37). Planetary gears: 65/23/16. Rear: 3.700/1 (37/10)		helical gear input from gearbox to limited slip front differential with output to transfer box through hollow shaft. Spiral bevel gears transfer box with viscous coupling epicyclical center differential (65/23/16). Hypoid spiral bevel gears limited slip rear differential
Clutch	dry single disk, 228mm diameter
Chassis-body
Type	steel monocoque chassis of GM2900 platform with roll-cage and front suspension steel sub-frame. 3 door coupe steel bodyshell with plastic bumpers
Front suspension	macpherson strut with lower L wishbone, coil spring, telescopic gas shock absorber and anti-roll bar
Rear suspension	trailing/semi-trailing arm with coil spring, telescopic gas shock absorber and anti-roll bar
Steering system	rack and pinion with hydraulic power assistance		14.8/1, 17.1/1, 22/1
Brakes	front ventilated disks 284mm diameter with 1 cast iron piston caliper, or 310/325/330/355mm diameter and 4/6 aluminium piston calipers. Rear solid disks 270mm diameter with 1 cast iron piston caliper, or ventilated disks 295mm diameter with 4 aluminium piston calipers		dual circuit with 229mm diameter servo, adjustable ratio split front to rear
Dimensions
length: 4.492 m (176.9 in)		width: 1.688 m (66.5 in)	height: 1.320 m (52.0 in)
wheelbase: 2.600 m (102.4 in)		front track: 1.426 m (56.1 in)	rear track: 1.446 m (56.9 in)
Rims - tires	6 x 16" - 17"	205/60/ZR 16
Weight	1200kg
Weight/power	4.3 kg/HP
Fuel tank	63 - 68 lt
Drag coefficient	0.29

	1993	1994	1995	1996	1997	1998	Total
*Total WRC results*
Races	2		1			1	4
Entries/finishes	2/0		1/0			1/1	4/1 (25%)

Entry		Rally event
Driver Codriver	Team	M.C	SVE	POR	KEN	T.dC	GRE	ARG	N.Z	FIN	AUS	S.R	ESP	RAC

Stig Blomqvist Benny Melander	Opel Team Sweden		eng ine
Erwin Doctor Theo Badenberg	Opel Dealer Team Holland												oil pump
Gavin Cox Steve Eccleston														dnf*

Statistics
Starts/finishes	2/0		1/0										1/0

Entry		Rally event
Driver Codriver	Team	M.C	(SVE)	POR	KEN	TdC	GRE	ARG	N.Z	FIN	(AUS)	S.R	(ESP)	RAC

Gavin Cox Steve Eccleston														49th

Statistics
Others starts/finishes	0/0

Entry		Rally event
Driver Codriver	Team	M.C	SVE	POR	(KEN)	T.dC	(GRE)	(ARG)	N.Z	(FIN)	AUS	(S.R)	ESP	RAC

Gavin Cox Stephen Griffiths														22nd*

Statistics
Starts/finishes	0/0

Entry		Rally event
Driver Codriver	Team	(MC)	SVE	(POR)	KEN	(TdC)	IND	ACR	ARG	(NZ)	FIN	AUS	SR	ESP	(RAC)

Gavin Cox Stephen Griffiths															drive shaft*

Statistics
Starts/finishes	0/0

Entry		Rally event
Driver Codriver	Team	MC	SVE	KEN	POR	ESP	TdC	ARG	GRE	N.Z	FIN	S.R	AUS	RAC

Kjell Hansson Sten-Ove Olsson			26th
Mark Winkles Noel Waugh														acci dent*

Statistics
Starts/finishes	1/1		1/1

Racing Cars

Specifications

Results in WRC

Statistics

Races

Article for production

Drawings

Transmission