Toyota Celica ST165 GT4 group A (1988)
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Development chain 1971: Toyota Celica TA22 1974: Toyota Celica RA20 1978: Toyota Celica RA40 GT2000 1988: Toyota Celica ST165 GT4 1992: Toyota Celica ST185 4WD Turbo 1994: Toyota Celica ST205 GT4 |
Development level Group A Group N |
Specifications
All about Toyota twin cam| Group/Class | A/8 | Homologation number: A5363 | |||||
| Years active | 1988 - 1992 | Homologation start: 1/5/1988 Homologation end: 31/12/1994 |
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| Engine | |||||||
|---|---|---|---|---|---|---|---|
| Type | Toyota 3S-GTE, straight 4 cyl, 4 stroke, petrol engine | located front transverse with 24o rear inclination | |||||
| Capacity | 1998.2 cc | WRC: x 1.7 = 3397 cc | |||||
| Bore x Stroke (mm) | 86.0 x 86.0 | ||||||
| Compression ratio | 8.5:1 | ||||||
| Output power - torgue | 1988: 260 HP 1989 +: 300 HP / 7000 rpm |
1988: 32.5 kgm (319Nm) / 3600 rpm 1989+: 40.0 kgm (392 Nm) / 4000 rpm |
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| Main bearings | forged steel crankshaft with 5 main bearings 59mm diameter, big end journals diameter 48mm | connecting rod length between centers 138mm, big end bearing tunnel diameter 51mm, aluminium alloy piston with 35.1mm compression height | |||||
| Materials | block: cast iron, 216mm deck height, 273mm height | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers 119mm height | |||||
| Cams/valves | dual overhead camshafts (DOHC), belt driven, equiped with T-VIS | 4 valves/cyl - 16 valves total. 33.6mm inlet valve diameter, 29.1mm exhaust valve diameter. 25o angle between inlet valve axis and vertical, 25o angle between exhaust valve axis and vertical. 1 coil spring per valve | |||||
| Aspiration | Toyota CT26 turbocharger (10 blades nickel alloy turbine 52/68mm in/out diameter, 10 blades aluminium compressor 42.1/65mm in/out diameter) with air/air intercooler. Nippon Denso L-jetronic multipoint electronic fuel injection. 1990-1991: 40mm turbo restrictor fitted 1992-1994: 38mm turbo restrictor fitted. |
pressure: 1988: 0.8 bar, 1989+: 1.2 bar | |||||
| Ignition | electronic, NGK BCPR5EP8 spark plugs, 1-3-4-2 firing order | ||||||
| Cooling system | jacketed watercooled with pump, radiator, fan and thermostat | 8 lt | |||||
| Lubricating system | wet sump with 1 oil cooler | 4.5 lt | |||||
| Transmission | |||||||
| Type | four wheel drive | Toyota E50F2, 5 speed or X-Trac (dog) 6 speed manual gearbox | |||||
| Gearbox ratios | 1st: 3.583/1 (43/12) 2nd: 2.045/1 (45/22) 3rd: 1.333/1 (40/30) 4th: 0.972/1 (35/36) 5th: 0.732/1 (30/41) R: 3.583/1 (26/12 x 43/26) |
1st: 3.357/1 (47/14) 2nd: 2.563/1 (41/16) 3rd: 2.000/1 (38/19) 4th: 1.652/1 (38/23) 5th: 1.375/1 (33/24) 6th: 1.192/1 (31/26) R: 3.000/1 (16/14 x 42/16) |
1989, X-trac dog: 1st: 3.385/1 (44/13) 2nd: 2.563/1 (41/16) 3rd: 2.000/1 (38/19) 4th: 1.714/1 (36/21) 5th: 1.478/1 (34/23) 6th: 1.280/1 (32/25) R: 3.000/1 (16/14 x 42/16) |
1990 X-trac dog: 1st: 3.462/1 (45/13) 2nd: 2.563/1 (41/16) 3rd: 1.889/1 (34/18) 4th: 1.545/1 (34/22) 5th: 1.261/1 (29/23) 6th: 1.069/1 (31/29) R: 3.000/1 (16/14 x 42/16) |
1991 X-trac dog: 1st: 3.417/1 (41/12) 2nd: 2.571/1 (36/14) 3rd: 2.000/1 (32/16) 4th: 1.722/1 (31/18) 5th: 1.476/1 (31/21) 6th: 1.286/1 (27/21) R: 3.083/1 (14/12 x 37/14) |
1992 X-trac synchro: 1st: 3.417/1 (41/12) 2nd: 2.571/1 (36/14) 3rd: 2.000/1 (32/16) 4th: 1.650/1 (33/20) 5th: 1.375/1 (33/24) 6th: 1.192/1 (31/26) R: 3.083/1 (14/12 x 37/14) |
1993 X-trac dog: 1st: 4.000/1 (48/12) 2nd: 2.714/1 (38/14) 3rd: 2.000/1 (38/19) 4th: 1.545/1 (34/22) 5th: 1.261/1 (29/23) 6th: 1.069/1 (31/29) R: 3.000/1 (16/14 x 42/16) |
| Diffrential ratio | Center: 4.286/1 (60/14), 3.933/1 (59/15), 4.214/1 (59/14), 4.143/1 (58/14), 4.071/1 (57/14), 3.867/1 (58/15), 3.800/1 (57/15), 3.733/1 (56/15), 3.563/1 (57/16), 3.500/1 (56/16), 3.438/1 (55/16), 3.176/1 (54/17), 2.944/1 (53/18), 2.750/1 (55/20), 2.571/1 (54/21), 2.842/1 (54/19), 2.947/1 (56/19), 3.056/1 (55/18), 3.294/1 (56/17), 3.412/1 (58/17). 1990: 3.692/1 (48/13), 3.769/1 (49/13), 3.667/1 (44/12), 3.750/1 (45/12), 3.833/1 (46/12), 3.917/1 (47/12), 4.000/1 (48/12), 4.083/1 (49/12), 4.167/1 (50/12), 4.250/1 (51/12), 3.846/1 (50/13), 3.429/1 (48/14). Transfer box x rear differential: 14/41x41/14, 9/35x35/9, 11/43x43/11, 12/35x35/12 |
Helical gears center differential with, one side-1st output to internally located limited slip front differential, and other side 2nd output to transfer box. Viscous coupling clutch controls torque spliting between front differential housing and transfer box, using homocentric shafts. Spiral bevel gears transfer box transfers torque to, hypoid spiral bevel gear, torsen rear differential. 28%-72% to 50%-50% front to rear torque distribution. (see info) | |||||
| Clutch | dry, single disk 236mm diameter | ||||||
| Chassis-body | |||||||
| Type | Steel monocoque Toyota ST165 chassis with front cross member for front suspension, and rear cross member subframe for differential and suspension support. 31kg steel 25CrMo4 (D40x2 and D40x1.5mm), or 31.5-34kg steel SCM430 (D40x1.5 and D40x1mm), or 23kg AlZnMg1 (D40x3) roll-cage. 3 door liftback/coupe steel bodyshell with steel front/rear bonnets, steel doors, urethane front/rear bumpers and plastic rear spoiler. 1992: aluminium alloy rollcages are cancelled |
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| Front suspension | macpherson strut with lower 'L' wishbone, coil springs, telescopic gas shock absorbers and 22mm (gravel) or 25mm (tarmac) anti-roll bar (see picture) | ||||||
| Rear suspension | macpherson strut with one trailing link and two lateral links, coil springs, telescopic gas shock absorbers and 16mm anti-roll bar only for tarmac. No anti-roll bar for gravel | ||||||
| Steering system | rack and pinion with hydraulic power assistance | 16.3/1, 12.1/1, 13.7/1, 17.1/1, 21.8/1 | |||||
| Brakes | front ventilated disks 255mm diameter with 1 cast iron piston caliper 42.9/57.2mm diameter or 2 cast iron piston calipers 42.9mm diameter, rear solid disks 269mm diameter with 1 cast iron piston caliper 31.8/34.9mm diameter. Front/rear ventilated discs 280/295/304/310/315/330mm diameter. Front 4 or 2+2 aluminium AP piston calipers 35/38/42.8/44.5/(2x41.3+2x44.5)/(2x41.3+2x38.1/(2x35+2x38)mm diameter. Rear 4 or 2+2 aluminium AP piston calipers 35/38.1/42.8/(2x41.3+2x38.1)/(2x35+2x38)mm diameter 1989: front/rear solid or ventilated carbon discs 280/295/328mm diameter, 4 aluminium piston calipers 25.4mm diameter, 2 aluminium piston calipers 34.9/31.7/38/1/35/41.3/42.8/44.5mm diameter. 1990: front/rear Brembo ventilated discs 305/320/328/278mm diameter with Brembo 2+2 aluminium piston calipers (2x36+2x40)/(2x38+2x44)/(2x30+2x34)/(2x34+2x38)mm diameter. 1991: front/rear Alcon 4 aluminium piston calipers 25.4/31.7/35/38/41.3mm, or Alcon 2+2 aluminium piston calipers (2x35+2x38)/(2x36+2x40)/(2x38+2x41.2)/(2x38+2x44)/(2x41.3+2x44.5)mm diameter |
dual circuit with Aisin vacuum servo, no servo, adjustable ratio split front to rear. Stone scraper and disc protection shield fitted. 1989: brake caliper water cooling system added with 17 lt water tank capacity | |||||
| Dimensions | |||||||
| length: 4.365 m (171.9 in) | width: 1.700 m (66.9 in) | height: 1.300 m (51.2 in) | |||||
| wheelbase: 2.525 m (99.4 in) | front track: 1.465 m (57.7 in) | rear track: 1.440 m (56.7 in) | |||||
| Rims - tires | gravel: 7" x 15", tarmac: 16" |
Pirelli, gravel: SG90 185/75-15, SG35 195/70-15, 205/65-15 | |||||
| Weight | 1100 - 1150 kg | ||||||
| Fuel tank | 60 - 80 lt | ||||||
| Drag coefficient | 0.33 | ||||||
Results in WRC
Statistics
| 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | Total | |||
| Works | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Races/(gr A wins) | 5 | 8/1 | 11/5 | 11/6 | 1 | 36/12 | ||||
| Entries/finishes | 12/3 | 21/11 | 23/17 | 26/21 | 1/0 | 83/52 (63.4%) | ||||
| Others | ||||||||||
| Races/(gr A wins) | +1 | +2 | +3 | 10/1 | +6 | 4 | 26/1 | |||
| Entries/finishes | 1/1 | 13/8 | 11/5 | 19/12 | 20/11 | 11/1 | 7/3 | 81/41 (50.6%) | ||
| Total WRC results | ||||||||||
| Races/(gr A wins) | 6 | 10/1 | 11/5 | 13/6 | 10/1 | 7 | 4 | 62/13 | ||
| Entries/finishes | 13/4 | 34/19 | 34/22 | 46/33 | 20/11 | 11/1 | 7/3 | 164/93 (56.7%) | ||
| Total points | 21 | 108 | 147 | 172 | 44 | 11 | 503 (8.113 per race) (3.067 per entry) |
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Races
Works team: Toyota Team Europe
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 | |||
| Juha Kankkunen Juha Piironen |
works | eng ine | eng ine | eng ine | acci dent | acci dent | |||||||||||
| Kenneth Eriksson Peter Diekmann |
works | 6th | trans miss ion | 6th | eng ine | ||||||||||||
| Björn Waldegård Fred Gallagher |
works | trans miss ion | 3rd | ||||||||||||||
| Jimmy McRae Rob Arthur |
works | eng ine | |||||||||||||||
| Tetsuo Sano Takeo Henmi |
8th | ||||||||||||||||
| Total points () |
21 | 5 | 3 | 5 | 8 | ||||||||||||
| Statistics | |||||||||||||||||
| Works Starts/finishes | 12/3 | 2/1 | 2/0 | 2/0 | 2/1 | 4/1 | |||||||||||
| Others Starts/finishes | 1/1 | 1/1 | |||||||||||||||
Works team:
RAC: Toyota Team Great Britain
SourceCarlos Sainz in Tour de Corse '90
Information and articles
Article from 4T 227, 8/1989
Click here
Atricle from 4T 207, 12/1987
Click here
Article from 4T 205, 10/1987
Click here
Drawings
Transmission
Source
Source
Suspension
page revision: 192, last edited: 21 Oct 2019 18:09