Opel Calibra 16V group A (1991)
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Home » Rally Cars » Opel Calibra 16V
calibra20rallyelm0.jpg Source Development chain
1983: Opel Manta B 20E
1991: Opel Calibra 16V
1993: Opel Calibra Turbo 4x4
Development level
Group A
Group N

Specifications

Group/Class A/7 Homologation number: A 5430
Years active 1992 Homologation start: 1/3/1991
Homologation end: 31/12/2004
Engine
Type C20XE, 1992+ evolution type C20XE-LN (Low Noise with direct ignition), straight 4cyl, 4 stroke, petrol engine located front transverse with 7.5o front inclination
Capacity 1998 cc WRC: 1998 cc
Bore x Stroke (mm) 86.0 x 86.0
Compression ratio 11.8:1
Output power - torgue 225 HP / 7500 rpm 24 kgm (235 Nm) / 5500 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: aluminium alloy, 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. 23o angle between inlet valves and vertical, 23o angle between exhaust valves and vertical. 1 coil spring per valve
Aspiration natural, Bosch Motronic M2.7 electronic fuel injection
Ignition electronic Champion RC9MCC spark plugs. 1992+ LN engine: direct ignition with 2 spark plugs/cylinder
Cooling system watercooled 7.5 lt
Lubrication system wet sump with 1 oil cooler 4.5 lt
Transmission
Type front wheel drive Quaife 5 speed, or X-trac 6 speed manual gearbox
Gearbox ratios 1st: 3.545/1 (39/11)
2nd: 2.158/1 (41/19)
3rd: 1.478/1 (34/23)
4th: 1.129/1 (35/31)
5th: 0.886/1 (31/35)
R: 3.333/1 (27/12 x 40/27)
1st: 2.786/1 (39/14)
2nd: 2.125/1 (34/16)
3rd: 1.882/1 (32/17)
4th: 1.650/1 (33/20)
5th: 1.450/1 (29/20)
6th: 1.261/1 (29/23)
R: 2.692/1 (15/13 x 35/15)
1992+: 1st: 2.786/1 (39/14)
2nd: 2.125/1 (34/16)
3rd: 1.882/1 (32/17)
4th: 1.579/1 (30/19)
5th: 1.381/1 (29/21)
6th: 1.182/1 (26/22)
R: 3.333/1 (27/12 x 40/27)
Diffrential ratio Front: 3.550/1 (71/20), 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), 3.294/1 (56/17), 3.737/1 (71/19), 3.867/1 (58/15), 3.944/1 (71/18), 4.071/1 (57/14), 4.188/1 (67/16), 4.200/1 (63/15), 4.214/1 (59/14), 4.500/1 (63/14), 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).
1992+: 3.273/1 (36/11), 3.769/1 (49/13), 3.846/1 (50/13), 4.000/1 (48/12), 4.083/1 (49/12), 4.167/1 (50/12), 4.545/1 (50/11)
helical gears limited slip front 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 19/1, 14.8/1, 17.1/1, 22/1
Brakes front ventilated disks 256mm diameter with 1 cast iron piston caliper, or 295/304/313/325mm diameter and 2/4 aluminium piston calipers. Rear solid disks 260mm diameter with 1 cast iron piston caliper, or ventilated disks 254/295mm diameter with 2/4 aluminium piston calipers.
1992+: front ventilated disks 280/330/340/355mm diameter and 4/6 aluminium piston calipers. Rear ventilated disks 280mm diameter and 4/6 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 15" - 16" 205/60/ZR 16
Weight 1050kg
Weight/power 4.7 kg/HP
Fuel tank 68 lt
Drag coefficient 0.29

Results in WRC

Statistics

1992 Total
Total WRC results
Races 2 2
Entries/finishes 2/1 2/1 (50%)

Races

Works team: -

Season

A/7 classification noted in brackets
Entry Rally event
Driver
Codriver
Team MC
Entry list
(SVE)
Entry list
POR KEN TdC GRE (NZ) ARG FIN AUS SR (CdI) (ESP) RAC
Bruno Thiry
Stéphane Prévot
Opel Team Belgium trans miss ion 9th (1st)
Total points
()
2 2
Statistics
Starts/finishes 2/1 1/0 1/1

631c995714.jpg Source

Article from 4T 260, 5/1992

Click here

Article from Track & Race Car (June 2005)

Click here

Drawings

36764.jpg Source

Engine

opelc20xebild.jpg Source
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