Lancia Delta HF Integrale group A (1988)
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Home » Rally Cars » Lancia Delta HF Integrale
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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
Production

Specifications

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Group/Class A/8 Homologation number: A 5355
Years active 1988 - 1989 Homologation start: 1/3/1988
Engine
Type Fiat Twin Cam (Lambredi), Type 831C5.000, straight 4 cyl, 4 stroke located front transverse
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 280 HP / 6500 rmp
295 HP / 7000 rpm
38.7 kgm (380 Nm) / 4000 rpm
41.0 kgm (402 Nm) / 4000 rpm
Main bearings 5 of 53mm diameter connecting rod length between centers 145mm, big end bearing internal diameter 54mm
Materials block: cast iron, fitted with twin counter-rotating balancer shafts cylinderhead: aluminium alloy
Cams/valves 2 overhead camshafts (DOHC), belt driven 2 valves/cyl. - 8 valves total. 43.7mm inlet valve diameter, 36.4mm 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 T03 (60/48) oil lubricated, water cooled turbocharger with intercooler,
Weber-Marelli IAW90 multipoint electronic fuel injection.
1990-1991: 40mm turbo restrictor fitted
pressure: 1.6 bar (max)
Ignition Weber-Marelli IAW90 Digiplex mapped electronic, firing order 1-3-4-2
Cooling system watercooled 6.2 lt
Lubrication system wet sump with oil cooler 5.5 lt
Transmission
Type 4 wheel drive ZF/Abarth R70, 6 speed gearbox
Gearbox ratios 1st: 3.500/1
2nd: 2.235/1
3rd: 1.518/1
4th: 1.132/1
5th: 0.928/1
R: 3.583/1
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)
Diffrential ratio center, 3.733/1 (56/15) or 4.071/1 (57/14) or 4.385/1 (57/13) or 3.111/1 (56/18). Transfer box 1/2.263 (19/43) and rear differential 2.263/1 (43/19) 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
Clutch dry single disk or double disk. Valeo electronically controlled. 230mm diameter
Chassis
Type Steel monocoque ZLA 831 ABO chassis with roll-cage and rear subframe for suspension. 5 door hatchback steel bodyshell with extended wheel arches
Front suspension Mac pherson strut with 2 lower arms that form a triangle, coil springs, telescopic gas shock absorbers and anti-roll bar
Rear suspension Mac pherson struts with twin parallel lower transverse arms, longitudinal reaction arms, coil springs, telescopic gas shock absorbers and anti-roll bar
Steering system power assisted rack and pinion 2.0 turns lock to lock
Brakes front ventilated disks 303/282mm diameter with 4 piston calipers, rear ventilated disks 303/282mm diameter with 2 piston calipers 2 dual circuits with servo and adjustable ratio split front to rear
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" x 14", or 5.5" - 6.5" x 15", tarmac: 9 x 16" gravel: Michelin, 185/640-15", 16/62-15, L91 14/62-15. Pirelli, SG35 or SG90 195/70-14. tarmac: Michelin, 245/610-16"
Weight 1120 kg
Weight/power 3.8 kg/HP
Fuel tank 70lt (30 to 120lt)
Drag coefficient 0.42

Results in WRC

Statistics

1988 1989 1990 1991 1992 1993 1994 1995 Total
Works
Races/wins 9/8 8/5 1 18/13
Entries/finishes 19/16 18/13 3/1 40/30 (75%)
Others
Races +3/1 +8 5 1 1 1 19/1
Entries/finishes 20/12 50/19 27/10 6/1 2/1 1/0 3/0 109/43 (39.4%)
Total WRC results
Races/wins 9/8 11/6 9 5 1 1 1 37/14
Entries/finishes 39/28 68/32 30/11 6/1 2/1 1/0 3/0 149/73 (49%)
Total points 205 198 10 413
(11.472 per race)
(2.772 per entry)

Races

Works team: Martini Lancia

Season
Entry Rally event
Driver
Codriver
Team M.C
Entry list
SVE
Entry list
POR KEN TdC GRE Oly (N.Z) ARG FIN (CdI) S.R RAC
Markku Alén
Ilkka Kivimäki
works 6th 4th 1st 4th 1st
Miki Biasion
Tiziano Siviero
works 1st 1st 1st 1st 2nd 1st
Bruno Saby
Jean-François Fauchille
works 3rd
Yves Loubet
Jean-Bernard Vieu
works 2nd acci dent* acci dent*
Mikael Ericsson
Claes Billstam
works trans miss ion 2nd 2nd acci dent
Vic Preston, Jr
John Lyall
works diff eren tial
Jorge Recalde
Jorge del Buono
works 1st
Alex Fiorio
Luigi Pirollo
Joly Club 3rd 2nd 7th 2nd
Jean-Michel Fabre
Pascale Manau
dnf
Jigger'
Kóstas Stefanis
6th
Dario Cerrato
Giuseppe Cerri
Joly Club 3rd
Franz Wittmann
Jörg Pattermann
Lancia Rally Team Austria 3rd
Harry Joki
Per Carlsson
Swedish Automobile Sports Federation 8th
Sebastian Lindholm
Staffan Pettersson
Autodrive trans miss ion
Harri Toivonen
Cedric Wrede
dnf
Antero Laine
Jari Hyrylä
dnf
Petri Viitala
Kalevi Kujanpää
DTW Motorsport susp ens ion
Paolo Alessandrini
Alessandro Alessandrini
10th
Maurizio Ferrecchi
Gianfranco Imerito
14th
Giacomo Bossini
Ugo Pasotti
acci dent
Erwin Keller
Ronny Hofmann
dnf
Pentti Airikkala
Brian Murphy
Safety Devices 4th
Total points
(1st)
205 15 10 17 39 19 27 26 35 17
Statistics
Works starts/finishes 19/16 3/2 2/1 2/2 3/3 1/1 2/2 2/2 2/2 2/1
Others starts/finishes 20/12 1/0 3/3 1/1 1/1 6/2 7/4 1/1

*Private entry with Joly Club


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Information and articles

Article from 4T 216, 9/1988

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Article from 4T 219, 12/1988: Martini racing

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Article from 4T 232, 1/1990: Cyclon - ΗΒ team (GR)

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Drawings

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Engine

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Transmission

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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)

Suspension

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Roll cage

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Roll cage. Material 25CrMo4 and Fe45. Homologation number ONS 418/67
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