Lancia Delta HF Integrale 16V group A (1989)
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Didier Auriol in Monte Carlo rally 1990
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Front differential with Ferguson-type viscous coupler and self-locking differential
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Back Torsen differential (5:1 torque ratio)
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Source | Development chain 1987: Lancia Delta HF 4WD 1988: Lancia Delta HF Integrale 1989: Lancia Delta HF Integrale 16V 1992: Lancia Delta HF Integrale Evoluzione |
Development level Group A Group N Production |
Specifications
Click hereGroup/Class | A/8 | Homologation number: A5394 | |
Years active | 1989 - 1991 | Homologation start: 1/1/1989 Homologation end: 31/12/1996 |
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Engine | |||
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Type | Fiat Twin Cam (Lambredi), Type 831D5.000, straight 4 cyl, 4 stroke | located front transverse with 18o front inclination | |
Capacity | 1995 cc | WRC: x 1.7 = 3392 cc | |
Bore x Stroke (mm) | 84.0 x 90.0 | ||
Compression ratio | 7.5:1 | ||
Output power - torgue | 300-330 HP / 7000 rpm | 41.0 - 45.9 kgm (402 - 450 Nm) / 4500 rpm | |
Main bearings | forged steel crankshaft with 5 main bearings 53mm diameter, big end journal diameter 50.8mm | connecting rod length between centers 145mm, big end bearing internal diameter 53.9mm, aluminium alloy pistons with 39mm compression height | |
Materials | block: cast iron, 229 mm deck height, fitted with twin counter-rotating balancer shafts | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers | |
Cams/valves | 2 overhead camshafts (DOHC), belt driven | 4 valves/cyl - 16 valves total. 34.6mm inlet valve diameter, 28.6mm exhaust valve diameter. 32.5o angle between inlet valve axis and vertical, 32.5o angle between exhaust valve axis and vertical. 2 coil springs per inlet and exhaust valve | |
Aspiration | Garrett AiResearch TB0385 (11 blades steel turbine 48.6/58.9mm in/out diameter, 14 blades aluminium compressor 48.8/69mm in/out diameter) turbocharger with air/air intercooler, Weber-Marelli IAW90 multipoint electronic fuel injection. 1990-1991: 40mm turbo restrictor fitted 1992-1994: 38mm turbo restrictor fitted. 1995+: 34mm turbo restrictor fitted. |
pressure: 1.8 bar (max) | |
Ignition | Weber-Marelli IAW90 Digiplex mapped electronic, firing order 1-3-4-2 | ||
Cooling system | jacketed watercooled with pump, radiator, fan and thermostat | 6.2 lt | |
Lubrication system | wet or dry sump with 1 oil cooler | 5.6 lt | |
Transmission | |||
Type | 4 wheel drive | 5 speed or ZF/Abarth R90, 6 speed manual gearbox | |
Gearbox ratios | 1st: 3.500/1 (42/12) 2nd: 2.176/1 (37/17) 3rd: 1.524/1 (32/21) 4th: 1.156/1 (37/32) 5th: 0.917/1 (33/36) R: 3.545/1 (39/11) |
1st: 3.182/1, (35/11) 2nd: 2.286/1, (32/14) 3rd: 1.706/1, (29/17) 4th: 1.350/1, (27/20) 5th: 1.130/1, (26/23) 6th: 0.960/1 (24/25) R: 2.867/1 (43/15) 1990: R: 3.182/1, (35/11) |
1st: 3.182/1, (35/11) 2nd: 2.462/1, (32/13) 3rd: 1.875/1, (30/16) 4th: 1.474/1, (28/19) 5th: 1.238/1, (26/21) 6th: 1.043/1 (24/23) R: 2.867/1 (43/15) 1990: R: 3.182/1, (35/11) |
Diffrential ratio | Epicyclical: 3.111/1 (56/18), 3.058/1 (52/17), 3.176/1 (54/17), 3.312/1 (53/16), 3.437/1 (55/16), 3.600/1 (54/15), 3.733/1 (56/15), 3.928/1 (55/14), 4.071/1 (57/14), 4.231/1 (55/13), 4.385/1 (57/13), 4.538/1 (59/13), 3.421/1 (65/19), 3.667/1 (55/15), 3.500/1 (56/16), 3.375/1 (54/16), 4.308/1 (56/13), 4.462/1 (58/13), 4.154/1 (54/13), 3.857/1 (54/14), 3.909/1 (43/11), 4.091/1 (45/11), 4.182/1 (46/11), 4.400/1 (44/10), 4.500/1 (45/10), 3.750/1 (45/12), 3.538/1 (46/13). 1991: 3.400/1 (51/15), 3.428/1 (48/14), 3.461/1 (45/13), 3.417/1 (41/12), 3.500/1 (49/14), 3.500/1 (42/12), 3.571/1 (50/14), 3.615/1 (47/13), 3.583/1 (43/12), 3.786/1 (53/14), 3.769/1 (49/13), 3.923/1 (51/13), 3.917/1 (47/12), 4.077/1 (53/13), 4.083/1 (49/12), 4.167/1 (50/12), 4.214/1 (59/14), 4.250/1 (51/12), 4.200/1 (42/10), 4.417/1 (53/12), 4.364/1 (48/11), 4.583/1 (55/12), 4.545/1 (50/11) 1993: 4.272/1 (47/11). Transfer box x rear differential: 19/43x43/19, 15/34x34/15, 16/36x36/16 1991: 15/35x35/15, 15/36x36/15, 17/38x38/17, 14/34x34/14, 13/32x32/13, 15/37x37/15, 11/27x27/11, 13/28x28/13, 17/27x27/17, 14/32x32/14, 12/30x30/12, 13/34x34/13 |
Helical gear epicyclical center differential, with one side-two homocentric hollow shafts outputs, 1st to front differential housing, 2nd to thansfer box. Viscous coupling clutch controls torque spliting between front differential casing and transfer box through hollow shafts. Limited slip front differential. Hypoid spiral bevel gear transfer box transfers torque to, hypoid spiral bevel gear, torsen rear differential. 50-50 % or 40-60% or 45-55% front/rear torque distribution Electronically controlled viscous coupling clutch from tour de Corse '91 |
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Clutch | dry double disk, 236mm diameter, valeo hydraulic electronically controlled | ||
Chassis | |||
Type | Steel monocoque ZLA 831 ABO chassis with rear subframe for suspension. 28-29-32kg Steel 25CrMo4 Norm (D40x1.5mm), 35kg (D40x2mm) roll-cage. 5 door hatchback steel bodyshell with steel front bonnet with aluminium air grills, steel rear bonnet, steel front/rear doors, plastic front/rear bumpers and extended wheel arches | ||
Front suspension | Mac pherson strut with lower 'A' wishbone, coil springs, telescopic gas shock absorbers and anti-roll bar | ||
Rear suspension | Mac pherson struts with 1 lower transverse arm, 1 lower trailing arm, coil springs, telescopic gas shock absorbers and anti-roll bar | ||
Steering system | rack and pinion with or without hydraulic power assistance | 2.0 turns lock to lock, 17.6/1 and 14.5/1 ratio | |
Brakes | Front ventilated discs 284mm diameter with 1 cast iron piston caliper 54mm diameter, rear solid discs 227mm diameter with 1 cast iron piston caliper 34mm diameter. Front ventilated discs 330mm diameter with 2+2 aluminium piston calipers 2x38+2x42mm pairs diameter. 332mm diameter with 2+2 aluminium piston calipers 2x36+2x44mm pairs diameter. Front/rear ventilated disks 256/282/313mm diameter with 2+2 aluminium piston calipers 2x36+2x44mm pairs diameter, 256/282/313 disc diameter with 2 aluminium piston calipers 42/48mm diameter. 284mm disc diameter with 2+2 aluminium piston calipers 2x41.3+2x38.1mm pairs diameter. Rear solid discs 227mm diameter with 2 aluminium piston calipers 38mm diameter, ventilated discs as previus paragraph plus additional 2 aluminium piston calipers 30/36/38mm diameter, 278 disc diameter with 2 aluminium piston calipers 38/42/48mm diameter, 278mm disc diameter with 2+2 aluminium piston calipers 2x36+2x40mm diameter, 282mm disc diameter with 2 aluminium piston calipers 38mm diameter 1990: front ventilated discs 355mm diameter with 2+2 aluminium piston calipers 2x38+2x44mm pairs diameter, rear ventilated discs 278mm diameter with 2+2 aluminium piston calipers 2x30+2x34mm pairs diameter. |
dual circuit with Benditalia-Isovac vacuum servo and adjustable ratio split front to rear. Front cooling spiral pastic tube for brakes, and discs protection shields | |
Dimensions | |||
length: 3.900 m (153.5 in) | width: 1.700 m (66.9 in) | height: 1.360 m (53.5 in) | |
wheelbase: 2.480 m (97.6 in) | front track: 1.488 m (58.6 in) | rear track: 1.458 m (57.4 in) | |
Rims - tires | gravel: 5.5" or 6.5" x 15" tarmac: 9 x 16" |
Michelin, gravel: 185/640-15" tarmac: 245/610-16" |
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Weight | 1100 kg | ||
Fuel tank | 57 lt (30 to 120lt) | ||
Drag coefficient | 0.44 |
Results in WRC
Statistics
1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | Total | ||
Works | ||||||||||
Races/wins | 1/1 | 9/6 | 11/5 | 21/12 | ||||||
Entries/finishes | 2/1 | 24/16 | 21/18 | 47/35 (75%) | ||||||
Others | ||||||||||
Races | +1 | +2/1 | 6 | 2 | 1 | 3 | 2 | 17/1 | ||
Entries/finishes | 3/3 | 29/20 | 62/33 | 14/5 | 4/1 | 7/4 | 5/4 | 4/2 | 129/69 (54.3%) | |
Total WRC results | ||||||||||
Races/wins | 1/1 | 10/6 | 13/6 | 6 | 2 | 1 | 3 | 2 | 38/13 | |
Entries/finishes | 5/4 | 53/36 | 83/51 | 14/5 | 4/1 | 7/4 | 6/4 | 5/3 | 176/104 (59.8%) | |
Total points | 20 | 214 | 267 | 3 | 504 (13.263 per race) (2.896 per entry) |
Races
Works team: Martini Lancia
Season
Entry | Rally event | ||||||||||||||
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Driver Codriver |
Team | (SVE) Entry list |
MC Entry list |
POR Entry list |
KEN | TdC | GRE | (NZ) | ARG | FIN | AUS | SR | (CdI) | RAC | |
Miki Biasion Tiziano Siviero |
works | 1st | |||||||||||||
Didier Auriol Bernard Occelli 460220 |
works | acci dent | |||||||||||||
Dario Cerrato Giuseppe Cerri 458663 |
Joly Club | 4th | |||||||||||||
Paolo Alessandrini Alessandro Alessandrini 480880 |
8th | ||||||||||||||
Riccardo Errani Fabio Villa |
19th | ||||||||||||||
Total points () |
20 | 20 | |||||||||||||
Statistics | |||||||||||||||
Works starts/finishes | 2/1 | 2/1 | |||||||||||||
Others starts/finishes | 3/3 | 3/3 |
Article from 4T 232, 1/1990
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Article from Auto Express (greece) 263, 6/1989
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Article from 4T 225, 6/1989
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SourceDidier Auriol in Monte Carlo rally 1990
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Drawings
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Engine
Garret Turbine
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Front differential with Ferguson-type viscous coupler and self-locking differential
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Back Torsen differential (5:1 torque ratio)
Chassis
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page revision: 225, last edited: 14 Sep 2019 10:30