Toyota Celica ST165 GT4 group A (1988)
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Home » Rally Cars » Toyota Celica ST165 GT4
sx1.jpg Development chain
1971: Toyota Celica TA20/TA22
1974: Toyota Celica RA23 GT2000
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
Production

Specifications

All about Toyota twin cam
Group/Class A/8 Homologation number: A 5363
Years active 1988 - 1992 Homologation start: 1/5/1988
Engine
Type 3S-GTE, straight 4 cyl, 4 stroke 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
Main bearings 5 of 59mm diameter connecting rod length between centers 138mm, big end bearing diameter 51mm
Materials block: cast iron 273mm height cylinderhead: aluminium alloy 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 (nickel alloy turbine 68mm diameter, aluminium compressor 65mm 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 watercooled 8 lt
Lubricating system wet sump with oil cooler 4.5 lt
Transmission
Type four wheel drive Toyota E50F2 5 speed or X-Trac 6 speed 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: 0.731/1 (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)
Diffrential ratio center: 3.860/1 or 4.285/1 (60/14), transfer box and rear: 2.933/1 Helical gears center differential with, one side-1st output to internally located open 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 ST165 chassis with roll-cage. 3 door liftback/coupe steel bodyshell
Front suspension macpherson strut with lower control arm, 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, 17.1/1, 21.8/1, 13.7/1
Brakes front ventilated disks 255mm diameter with 1/2 cast iron piston calipers, or 280/295/305/315/330mm diameter with 4 aluminium piston calipers. Rear solid disks 270mm diameter with 1 cast iron piston caliper, or ventilated disks 280/295/304/310/315/330mm diameter and 4/2 aluminium piston calipers dual circuit with servo, adjustable ratio split front to rear
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
Weight/power 3.7 kg/HP
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) 4 8/1 11/5 11/6 34/12
Entries/finishes 8/2 21/11 23/17 26/22 78/52 (66.7%)
Others
Races/(gr A wins) +2 +1 +2 8/1 6 3 22/1
Entries/finishes 5/2 12/8 10/4 19/11 17/10 9/1 4/1 76/37 (48.7%)
Total WRC results
Races/(gr A wins) 6 9/1 11/5 13/6 8/1 6 3 56/13
Entries/finishes 13/4 33/19 33/21 45/33 17/10 9/1 4/1 154/89 (57.8%)
Total points 21 108 145 172 44 490
(8.750 per race)
(3.182 per entry)

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*
Tetsuo Sano
Takeo Henmi
8th
Jimmy McRae
Rob Arthur
Toyota Team Great Britain eng ine
Total points
()
21 5 3 5 8
Statistics
Works Starts/finishes 8/2 2/1 2/0 2/0 2/1
Others Starts/finishes 5/2 1/1 4/1

*Private entry with Toyota Team Great Britain


1.1991%2B-%2BCarlos%2BSainz%2B-%2BToyota%2BCelica%2BGT4%2B-%2BMontecarlo%2B1%25C2%25BA-%2B7.jpg Source
Carlos Sainz in Tour de Corse '90

Information and articles

Article from 4T 227, 8/1989

Click here

Atricle from 4T 207, 12/1987

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Article from 4T 205, 10/1987

Click here

Drawings

Transmission

gearbox%20section.gif Source
transfer1.gif Source

Suspension

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