Home » Rally Cars » Subaru Legacy BC RS
SourceDriven with Colin McRae in Tour de Corse '93
Specifications
Group/Class | A/8 | Homologation number: A5399 | ||
Years active | 1990 - 1993 | Homologation start: 1/1/1990 | ||
Engine | ||||
---|---|---|---|---|
Type | Subaru EJ20G HLA Rocker-style, boxer V4 cyl, (180o degrees), 4 stroke, petrol engine | 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: cross flow aluminium alloy with hemispherical combustion chambers 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. Hydraulic Lash Adjusters (HLA) | ||
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 | jacketed watercooled with pump, radiator, fan and thermostat | 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 |
EJ20G engines
EJ20G engines fall in to 3 categories:
[edit] 1. Rocker-style HLA EJ20G usage:Legacy RS 89-93
Legacy RS-RA 89-93
Legacy GT 89-93
Power output ranges from 200 PS (147 kW; 197 bhp) @ 6000 rpm and 260 Nm for the GT to 220 PS (162 kW; 217 bhp) @ 6400 rpm and 270 Nm for the RS versions. Engines can be identified by coil on plug with 2 M6 bolts per coil and valve covers with 4CAM 16VALVE and horizontal lines above and below the plug holes. All these engines have the air-to-water intercooler setup (chargecooler) and Oil squirters.
[edit] 2. Bucket-style HLA EJ20G usage:Impreza WRX 92~96.
Impreza WRX Wagon 92~96.
Impreza WRX STI 93~96
EUDM Subaru Impreza Turbo 94~96
Power output ranges from 220 PS @ 6000 rpm and 260 Nm for the WRX Wagons to 275 PS @ 6500 rpm and 319 Nm for the WRX STI Version II. Engines can be identified by coil on plug with 1 M8 bolt per coil and valve covers with 4CAM 16VALVE and horizontal lines above the plug holes. Generally these engines all have the slanted intercooler. Some engines may not have HLA buckets but solid buckets with shims underneath. These engines also feature lighter valves, the intake valves are marked INKO and the exhaust valves are marked EXKO. The standard HLA valves are I252 and E283 respectively. All WRX Wagon engines and automatic sedan engines came with a TD04 with 90 deg elbow, all manual WRX sedans including STI versions all had a TD05 with 90 deg elbow.
[edit] 3. Shim-over-bucket style EJ20G usage:Impreza WRX AT 97~98
Impreza WRX AT Wagon 97~98
JDM Forester Turbo 97~98
EUDM Subaru Impreza Turbo 97~98
Power output is 250 PS @ 6000 rpm for the Japanese versions and 211 PS for the European model. Engines can be identified by smooth valve covers, plug leads and a wasted spark coil in the middle of the intake manifold. These engines were available with both manual and automatic transmission in Japan, but generally had manual the transmission in Europe in the Impreza Turbo.
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 | +1 | +4 | 4 | 5 | 4 | 3 | 3 | 2 | 1 | 2 | 30 | |
Entries/finishes | 4/2 | 7/3 | 12/6 | 11/5 | 10/3 | 6/3 | 4/2 | 4/4 | 3/1 | 1/0 | 2/2 | 63/31 (49.2%) | |
Total WRC results | |||||||||||||
Races/wins | 7 | 9 | 7 | 11/1 | 4 | 5 | 4 | 3 | 3 | 2 | 1 | 2 | 58/1 |
Entries/finishes | 14/5 | 17/10 | 18/9 | 26/16 | 11/5 | 10/3 | 6/3 | 4/2 | 4/4 | 3/1 | 1/0 | 2/2 | 116/60 (51.7%) |
Total points | 25 | 46 | 50 | 73 | 5 | 5 | 7 | 211 (3.638 per race) (1.819 per entry) |
Races
Works team:
- works: Subaru World Rally Team (1993+)
- works2: Subaru Rally Team Europe (1991 - 1992)
- works3: Subaru Technica International (1990)
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 |
Article from 4T 263, 8/92
Click here
Article from 4T 230, 11/89
Click here
Source