Subaru Legacy BC RS group A (1990)
gr.jpg
gb.jpg

Home » Rally Cars » Subaru Legacy BC RS

subaru-legacy-rs-mcrae-ringer-rally-new-zealand-1993-1-43-4871-p.jpg Source

Assemblying Legacy for RAC rally: see video

Specifications

Group/Class A/8 Homologation number: A 5399
Years active 1990 - 1993 Homologation start: 1/1/1990
Engine
Type EJ20G HLA Rocker-style, boxer V4cyl, (180o degrees), 4 stroke located front longitudinally with 7o15' front inclination
Capacity 1994.3 cc WRC: x 1.7 = 3390.3 cc
Bore x Stroke (mm) 92.0 x 75.0
Compression ratio 8.8:1
Output power - torgue 300 HP / 6500 rpm 40.0 kgm (392 Nm) / 4500 rpm
47.0 kgm (461 Nm) / 5000 rpm
Main bearings 5 of 64mm diameter connecting rod length between centers 130.5mm, big end bearing diameter 55mm
Materials block: aluminium alloy 401mm height cylinderhead: aluminium alloy 127mm height
Cams/valves 2 x 2 overhead camshaft (DOHC), belt driven 4 valves/cyl. - 16 valves total. 36.2mm inlet valve diameter, 32.2mm exhaust valve diameter. 26o angle between inlet valve axis and vertical, 26o angle between exhaust valve axis and vertical. 2 or 1 coil spring per valve
Aspiration IHI RHB52 VF15 turbocharger (52.8mm steel turbine, 56.2mm aluminium compressor) with chargecooler (water-to-air intercooler) and 40mm turbo restrictor fitted, JECS L-jetronic multi point eletronic fuel injection.
1992-1994: 38mm turbo restrictor fitted.
1995+: 34mm turbo restrictor fitted.
pressure: 1.6 bar
Ignition electronic. Firing order 1-3-2-4
Cooling system watercooled 7.3 lt
Lubricating system wet sump with 1 oil cooler 5.3 lt
Transmission
Type four wheel drive 5 speed or X-Trac 6 speed manual gearbox
Gearbox ratios 1st: 3.545/1 (39/11)
2nd: 2.111/1 (38/18)
3rd: 1.448/1 (42/29)
4th: 1.088/1 (37/34)
5th: 0.825/1 (33/40)
R: 3.416/1 (41/12)
1st: 2.916/1 (35/12)
2nd: 2.000/1 (30/15)
3rd: 1.500/1 (27/18)
4th: 1.133/1 (34/30)
5th: 0.871/1 (34/39)
R: 3.416/1 (41/12)
dog, 1st: 2.923/1 (38/13)
2nd: 2.125/1 (34/16)
3rd: 1.736/1 (33/19)
4th: 1.450/1 (29/20)
5th: 1.227/1 (27/22)
6th: 1.043/1 (24/23)
R: 2.000/1 (32/16)
1991+, 1st: 3.454/1 (38/11)
2nd: 2.333/1 (33/15)
3rd: 1.750/1 (35/20)
4th: 1.354/1 (42/31)
5th: 0.871/1 (34/39)
R: 2.000/1 (32/16)
Diffrential ratio Front/rear: 4.111/1 (37/9), 3.364/1 (37/11), 3.444/1 (31/9), 3.455/1 (38/11), 3.545/1 (39/11), 3.700/1 (37/10), 3.875/1 (31/8), 3.889/1 (35/9), 3.900/1 (39/10), 4.364/1 (48/11), 4.375/1 (35/8), 4.444/1 (40/9), 4.625/1 (37/8), 4.875/1 (39/8), 5.143/1 (36/7).
Transfer box: 1.000/1 (31/31), 1.111/1 (30/27), 1.100/1 (33/30), 1.250/1 (30/24), 1.273/1 (28/22), 1.043/1 (24/23), 1.182/1 (26/22), 1.333/1 (28/21), 1.450/1 (29/20). 1991+: 1.087/1 (25/23), 1.136/1 (25/22)
gearbox driven shaft permanently coupled with central differential case. Viscous coupling center differential, with 1st output through hollow driven gearbox shaft to hypoid spiral bevel gears limited slip front differential, and 2nd output to helical gears transfer box, and then to hypoid spiral bevel gears limited slip rear differential
Clutch dry, single disk 225mm diameter
Chassis-body
Type Steel monocoque BC chassis with roll-cage. Front and rear steel subframes. 4 door saloon steel bodyshell with steel supported polypropylene bumpers
Front suspension macpherson strut with lower L wishbones, coil springs, telescopic gas shock absorbers and anti-roll bar
Rear suspension macpherson strut with 2 tranverse and 1 longitudinal links, coil springs, telescopic gas shock absorbers and anti-roll bar
Steering system rack and pinion with power assistance 15/1, 13/1, 20/1, 17/1
Brakes front and rear ventilated disks with 270/280/290/304/315/330mm disk diameter and 4/2 aluminium piston calipers. 1991+: ventilated front disks with 340/356mm disk diameter.
gravel: 304mm diameter front/rear, tarmac: 355/332mm disk diameter front/rear
dual circuit with servo, adjustable ratio slit front to rear
Dimensions
length: 4.510 m (177.6 in) width: 1.705 m (67.1 in) height: 1.420 m (55.9 in)
wheelbase: 2.580 m (101.6 in) front track: 1.495m (58.9 in) rear track: 1.485 m (58.5 in)
Rims - tires 15" - 16" michelin
Weight 1100 - 1200 kg 60%-40% front-rear distribution
Weight/power 3.8 kg/HP
Fuel tank

Results in WRC

Statistics

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 Total
Works
Races /wins 7 8 6 7/1 28/1
Entries/finishes 14/5 13/8 11/6 15/10 53/29 (54.7%)
Others
Races +1 +4 4 5 3 3 3 2 1 2 28
Entries/finishes 4/2 6/3 11/5 7/5 8/2 5/2 4/2 4/4 3/1 1/0 2/2 55/28 (50.9%)
Total WRC results
Races/wins 7 9 6 11/1 4 5 3 3 3 2 1 2 56/1
Entries/finishes 14/5 17/10 17/9 26/15 7/5 8/2 5/2 4/2 4/4 3/1 1/0 2/2 108/57 (52.8%)
Total points 25 46 50 73 5 199
(3.554 per race)
(1.843 per entry)

Races

Works team:

  • works: Subaru World Rally Team (1993+)
  • works2: Subaru Rally Team Europe (1991 - 1992)
  • works3: Subaru Technica International (1990)
Season
Entry Rally event
Driver
Codriver
Team M.C
Entry list
POR KEN TdC GRE (N.Z) ARG FIN AUS S.R (CdI) RAC
Markku Alén
Ilkka Kivimäki
works3 eng ine eng ine 4th trans miss ion eng ine
François Chatriot
Michel Périn
works3 clutch
Derek Warwick
Ronan Morgan
works3 acci dent
Jim Heather-Hayes
Anton Levitan
works3 6th
Mike Kirkland
Surinder Thatthi
works3 eng ine clutch
'Possum' Bourne
Rodger Freeth
works3 eng ine 5th 4th
Ian Duncan
Ian Munro
works3 eng ine
Total points
()
25 5 6 7 7
Statistics
Works starts/finishes 14/5 5/2 1/0 2/1 1/1 1/1 2/0 2/0

90%20legacy%20rally.jpg?pictureId=2411896&asGalleryImage=true Source
Marku Alen in 1990

Information and articles

Article from 4T 263, 8/92

Click here

Article from 4T 230, 11/89

Click here

Drawings

subaru-legacy-rs-1991.gif Source
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License