Lancia Delta HF 4WD group A (1987)
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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
Group N
Production

Abarth SE043

Specifications

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Group/Class A/8 Homologation number: A5324
Years active 1987 - 1988 Homologation start: 1/1/1987
Homologation end: 31/12/1992
Engine
Type Fiat Twin Cam (Lambredi), Type 831B5.000, straight 4 cyl, 4 stroke located front transverse with 18o front inclination
Capacity 1995 cc WRC: x 1.4 = 2793 cc
1988+: x 1.7 = 3392 cc
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 forged steel crankshaft with 5 main bearings 53mm diameter, big end journal diameter 50.8mm connecting rod length between centers 145mm, big end bearing tunnel diameter 53.9mm, aluminium alloy pistons with 39.5 mm 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 2 valves/cyl. - 8 valves total. 43.8mm inlet valve diameter, 36.5mm exhaust valve diameter. 32.5o angle between inlet valve axis and vertical, 32.5o angle between exhaust valve axis and vertical
Aspiration Garrett AiResearch TB0338 (11 blades steel turbine 48.6/58.9mm in/out diameter, 12 blades aluminium compressor 42.6/60.1mm in/out diameter) turbocharger with air/air 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 jacketed watercooled with pump, radiator, fan and thermostat 6 lt
Lubrication system wet sump with 1 oil cooler 5.5 lt
Transmission
Type 4 wheel drive ZF/Abarth R70, 5 speed manual gearbox, or 1988: 6 speed manual gearbox
Gearbox ratios 1st: 3.500/1 (42/12)
2nd: 2.235/1 (38/17)
3rd: 1.518/1 (41/27)
4th: 1.132/1 (43/38)
5th: 0.928/1 (37/42)
R: 3.583/1 (43/12)		 1st: 2.846/1 (37/13)
2nd: 2.000/1 (32/16)
3rd: 1.526/1 (29/19)
4th: 1.227/1 (27/22)
5th: 1.037/1 (28/27)
R: 2.867/1 (43/15)		 1988: 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 Epicyclical: 2.944/1 (53/18), 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).
Transfer box x rear differential: 19/43x43/19, 15/34x34/15		 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 with hydraulic command system
Chassis
Type Steel monocoque Lancia ZLA 831 ABO chassis with rear subframe for suspension, and 35kg (steel 25CrMo4 Norm D40x2), or 28-29kg (D40x1.5mm) roll-cage. 5 door hatchback steel bodyshell with steel front/rear bonnets, steel front/rear doors and plastic front/rear bumpers
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 - 2.5 turns lock to lock, 17.6/1 and 14.5/1 ratio
Brakes Front ventilated discs 257mm diameter with 1 cast iron piston caliper 48mm diameter, rear solid discs 227mm diameter with 1 cast iron piston caliper 34mm 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.
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		 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: 3.895 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%
Fuel tank 57 lt, 40 - 80lt

Results in WRC

Statistics

1987 1988 1989 1990 Total
Works
Races/wins 10/8 2/2 12/10
Entries/finishes 27/24 5/2 32/26 (81.3%)
Others
Races +2/1 +5 6 1 14/1
Entries/finishes 24/12 25/10 11/3 1/0 61/25 (41%)
Total WRC results
Races/wins 12/9 7/2 6 1 26/11
Entries/finishes 51/36 30/12 9/3 1/0 91/51 (56%)
Total points 244 48 5 297
(11.420 per race)
(3.264 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
365984		 works 2nd
Juha Kankkunen
Juha Piironen
366067		 works 3rd
Juha Kankkunen
Juha Piironen
374972		 works 4th
Juha Kankkunen
Juha Piironen
376023		 works 2nd 5th
Juha Kankkunen
Juha Piironen
378422		 works 1st
Juha Kankkunen
Juha Piironen
376021		 works 1st
Markku Alén
Ilkka Kivimäki
365985		 works 5th
Markku Alén
Ilkka Kivimäki
366066		 works 1st
Markku Alén
Ilkka Kivimäki
378423		 works 1st
Markku Alén
Ilkka Kivimäki
376018		 works 3rd 1st
Markku Alén
Ilkka Kivimäki
405478		 works acci dent
Markku Alén
Ilkka Kivimäki
405476		 works 5th
Miki Biasion
Tiziano Siviero
366111		 works 1st
Miki Biasion
Tiziano Siviero
375518		 works 8th
Miki Biasion
Tiziano Siviero
381308		 works 3rd
Miki Biasion
Tiziano Siviero
376021		 works 7th 1st
Miki Biasion
Tiziano Siviero
376265		 works 2nd
Miki Biasion
Tiziano Siviero
405476		 works 1st
Bruno Saby
Jean-François Fauchille
366109		 works trans miss ion
Bruno Saby
Jean-François Fauchille
381371		 works sus pen sion
Bruno Saby
Jean-François Fauchille
376265		 Team Chardonnet 2nd
Mikael Ericsson
Claes Billstam
366068		 works 2nd sus pen sion* 8th*
Mikael Ericsson
Claes Billstam
376265		 works 4th
Vic Preston jr
John Lyall
378276		 works 14th
Yves Loubet
Jean-Bernard Vieu
381367		 works 2nd
Jorge Recalde
Jorge del Buono
378423		 works 2nd
Jorge Recalde
Jorge del Buono
366067		 Joly Club 7th
Alex Fiorio
Luigi Pirollo
376267		 Joly Club 7th
Manfred Hero
Guido Horsch		 acci dent
Giacomo Fossa "Jacques"
Georges Romanet		 dnf
Carlos Bica
Fernando Prata
361004		 Duriforte Construçoes sus pen sion
Giovanni Recordati
Freddy Delorme		 dnf dnf dnf
"Jigger"
C. Stefanis		 13th
Paolo Alessandrini
Alessandro Alessandrini
362030		 A.R.T. Engineering 5th
Paolo Alessandrini
Alessandro Alessandrini
366067		 A.R.T. Engineering 9th
Franz Wittmann
Jörg Pattermann
361830		 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
378422		 Grifone Esso 5th
Roberto Rosselli
Marco Ercole		 21st
'Tchine'
Gilles Thimonier		 acci dent
Bello
Massimo Sainati		 dnf
Russell Brookes
Neil Wilson
376023		 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 24/12 2/0 1/0 3/1 2/2 1/1 4/1 1/1 9/6 1/0

*Private entry with Joly Club

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

Information and articles

Article

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Article from 4T 202, 7/1987

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Article from 4T 211, 4/1988

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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
page revision: 199, last edited: 26 Nov 2019 12:36
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