Lancia Delta HF 4WD group A (1987)
gr.jpg
gb.jpg
Home » Rally Cars » Lancia Delta HF 4WD
1014088394_c7a4d6f66c_z.jpg 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 here
Group/Class A/8 Homologation number: A 5324
Years active 1987 - 1988 Homologation start: 1/1/1987
Engine
Type Fiat Twin Cam (Lambredi), Type 831B5.000, straight 4 cyl, 4 stroke located front transverse
Capacity 1995 cc WRC: x 1.4 = 2793 cc (1987)
WRC: x 1.7 = 3392 cc (1988+)
Bore x Stroke (mm) 84.0 x 90.0
Compression ratio 7.5:1 - 7.75:1
Output power - torgue 240 HP / 6000 rpm or 260 HP / 6250 rpm. 1/1/1988+: 240 HP, due to installation of production intercooler as new regulations stated 35.0 kgm (343 Nm) / 3500 rpm or 39.7 kgm (390 Nm) / 3000 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
Aspiration Garrett AiResearch T03 (60/48) oil lubricated, water cooled turbocharger with intercooler,
Weber-Marelli IAW90 multipoint electronic fuel injection
pressure: 1.6 bar (max)
Ignition Weber-Marelli IAW90 Digiplex mapped electronic, firing order 1-3-4-2
Cooling system watercooled 6 lt
Lubrication system wet sump with oil cooler 5.5 lt
Transmission
Type 4 wheel drive ZF/Abarth R70, 5 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: 2.846/1
2nd: 2.000/1
3rd: 1.526/1
4th: 1.227/1
5th: 1.037/1
Diffrential ratio center: 4.071/1 (57/14) or 2.944/1 (53/18). Transfer box 1/2.263 (19/43), 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 230mm diameter
Chassis
Type Steel monocoque ZLA 831 ABO chassis with roll-cage and rear subframe for suspension. 5 door hatchback steel bodyshell
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 rack and pinion 2.0 - 2.5 turns lock to lock
Brakes front ventilated disks 282mm diameter with 4 piston calipers, rear ventilated disks 282mm diameter with 2 piston calipers 2 dual circuits with servo and adjustable ratio split front to rear
Dimensions
length: 3.895 m (153.4 in) width: 1.620 m (63.8 in) height: 1.360 m (53.5 in)
wheelbase: 2.475 m (97.4 in) front track: 1.434 m (56.5 in) rear track: 1.440 m (56.7 in)
Rims - tires gravel: 5.5" - 6" x 14" or 6" x 15", tarmac: 7.5" x 15" Pirelli, gravel: 185/70-14" or 195/55VR15, tarmac: 205/70-15"
Weight 1200 - 1150 kg front-rear: 63.5% - 36.5%
Weight/power 4.5 kg/HP
Fuel tank 40 - 80lt

Results in WRC

Statistics

1987 1988 1989 Total
Works
Races/wins 10/8 2/2 12/10
Entries/finishes 27/24 5/2 32/26 (81.3%)
Others
Races +2/1 +4 6 12/1
Entries/finishes 21/12 25/11 10/3 56/26 (46.4%)
Total WRC results
Races/wins 12/9 6/2 6 24/11
Entries/finishes 48/36 30/13 9/3 88/52 (59.1%)
Total points 244 48 5 297
(12.375 per race)
(3.375 per entry)

Races

Works team: Martini Lancia

Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN TdC GRE Oly (NZ) ARG FIN (CdI) SR RAC
Juha Kankkunen
Juha Piironen
works 2nd 3rd 4th 2nd 1st 5th 1st
Markku Alén
Ilkka Kivimäki
works 5th 1st 1st 3rd 1st acci dent 5th
Miki Biasion
Tiziano Siviero
works 1st 8th 3rd 7th 2nd 1st 1st
Bruno Saby
Jean-François Fauchille
works trans miss ion sus pen sion 2nd * *
Mikael Ericsson
Claes Billstam
works 2nd sus pen sion* 8th* 4th
Yves Loubet
Jean-Bernard Vieu
works 2nd
Jorge Recalde
Jorge del Buono
works 7th* 2nd
Alex Fiorio
Luigi Pirollo
Joly Club 7th
Manfred Hero
Guido Horsch
acci dent
Carlos Bica
Fernando Prata
Duriforte Construçoes sus pen sion
Giovanni Recordati
Freddy Delorme
dnf dnf
"Jigger"
C. Stefanis
13th
Paolo Alessandrini
Alessandro Alessandrini
A.R.T. Engineering 5th 9th
Franz Wittmann
Jörg Pattermann
Funkbe raterring Rally Team 1st
Olof Wikström
Pentti Kokko
23th
Raimo Niemi
Kari Mannila
dnf
Marjo Salonen
Tuula Karkkulainen
Siemens Lady dnf
Alessandro Molino
Nicola Albanese
8th
Fabrizio Tabaton
Luciano Tedeschini
Grifone Esso 5th
Roberto Rosselli
LucianMarco Ercole
21st
'Tchine'
Gilles Thimonier
acci dent
Russell Brookes
Neil Wilson
Andrews Heat for Hire acci dent
Total points
(1st)
244 19 23 20 17 23 37 10 19 16 3 34 23
Statistics
Works starts/finishes 27/24 3/2 3/3 3/3 3/2 3/3 3/3 2/2 2/2 2/1 3/3
Others starts/finishes 21/12 1/0 1/0 3/1 2/2 1/1 4/1 1/1 7/6 1/0

*Private entry with Joly Club
* *Team Chardonnet entry


1987+KKK+PH33.JPG Source
Juha Kankkunen in RAC 1987

Information and articles

Article from 4T 202, 7/1987

Click here

Article from 4T 211, 4/1988

Click here

Drawings

lancia_di_3v.jpg Source

Transmission

transmis.jpg Source
evofront.jpg Source
integrale-front.jpg
Front differential with Ferguson-type viscous coupler and self-locking differential
evotors.jpg Source
Back Torsen differential (5:1 torque ratio)

Suspension

lancia-delta-autre-36275.jpg Source
lancia-delta-autre-36276.jpg Source
82427790_w200.JPG Source

Roll cage

Lancia%20Delta%204WD%2000753024.jpg Source
Roll cage. Material 25CrMo4 and Fe45. Homologation number ONS 418/67
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License