Toyota Supra MA70 Turbo group A (1987)
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1987: Toyota Supra MA70 3.0i
1987: Toyota Supra MA70 Turbo

Specifications

Group/Class A/8 Homologation number: A5334
Years active 1987-1989 Homologation start: 1/7/1987
Homologation start: 31/12/1999
Engine
Type Toyota 7M-GTE, straight 6 cyl, 4 stroke, petrol engine located front longitudinal with 2.4o front inclination
Capacity 2954 cc WRC: x 1.4 = 4136 cc (1987)
1988: x 1.7 = 5022 cc
Bore x Stroke (mm) 83.0 x 91.0
Compression ratio 8.4:1
Output power - torgue 400 HP / 6600 rpm 48.9 kgm (480 Nm) / 4000 rpm
Main bearings forged steel crankshaft with 7 main bearings 64mm diameter connecting rod distance between centers 152mm, big end bearing tunnel diameter 55mm
Materials block: cast iron cylinderhead: crossflow aluminium alloy with hemispherical combustion chambers
Cams/valves 2 overhead camshafts (DOHC), belt driven 4 valves/cyl. - 24 valves total. 32.2mm inlet valves diameter, 27.7mm exhaust valves diameter. 25o angle between inlet valve axis and vertical, 25o angle between exhaust valve axis and vertical
Aspiration 1 x Toyota CT26 turbocharger (10 blades steel heat resisted alloy turbine with 52/68mm in/out diameter, 10 blades aluminium alloy impeller with 46/65mm in/out diameter) with air/water intercooler, Nippondenso L-Jetronic multipoint electronic fuel injection
Ignition electronic, NGK BCPR6EY or BCPR6RP-N8 spark plug, firing order 1-5-3-6-2-4
Cooling system jacketed watercooled with pump, radiator, fan and thermostat 7.5 lt
Lubricating system wet sump 5 lt
Transmission
Type rear wheel drive Toyota R154 or Hewland, 5 speed manual gearbox
Gearbox ratios constant: 1.118/1 (38/34)
1st: 3.251/1 (32/11)
2nd: 1.956/1 (35/20)
3rd: 1.310/1 (34/29)
4th: 1.000/1
5th: 0.754/1 (29/43)
R: 3.181/1 (23/13 x 37/23)
constant: 1.160/1 (29/25)
1st: 2.525/1 (37/17)
2nd: 1.914/1 (33/20)
3rd: 1.513/1 (30/23)
4th: 1.205/1 (27/26)
5th: 1.000/1
R: 3.302/1 (23/13x37/23)
1988: constant: 1.300/1 (26/20)
1st: 2.687/1 (31/15)
2nd: 1.773/1 (30/22)
3rd: 1.357/1 (24/23)
4th: 1.114/1 (24/28)
5th: 1.000/1
R: 4.000/1 (23/13x40/23)
1990: constant: 1.038/1 (27/26)
1st: 2.337/1 (36/16)
2nd: 1.681/1 (34/21)
3rd: 1.355/1 (30/23)
4th: 1.163/1 (28/25)
5th: 1.000/1
R: 2.661/1 (16/16x41/16)
Diffrential ratio 3.909/1 (43/11), 2.833/1 (34/12), 2.917/1 (35/12), 3.083/1 (37/12), 3.154/1 (41/13), 3.250/1 (39/12), 3.308/1 (43/13), 3.417/1 (41/12), 3.583/1 (43/12), 3.727/1 (41/11), 3.769/1 (49/13), 4.091/1 (45/11), 4.100/1 (41/10), 4.273/1 (47/11), 4.300/1 (43/10), 4.545/1 (50/11), 4.556/1 (41/9), 4.778/1 (43/9), 4.889/1 (44/9), 5,125/1 (41/8), 5.375/1 (43/8) hypoid spiral bevel gears limited slip rear differential
Clutch dry, double disc
Chassis-body
Type steel monocoque MA70 chassis of Toyota A platform with 33kg 25CrMo4 steel (D40x1.5mm and D40x1), or 35kg SCM430 steel (D40x1.5mm and D40x1), 1988: 45kg SCM430 steel (D40x1.5mm and D40x1), 30kg ALCuMg1 (D40x3mm), 50kg SCM430 steel (D40x1.5) roll-cage. 3 door coupe steel bodyshell with steel doors and front/rear bonnets, plastic front/rear bumpers and plastic rear spoiler.
1992: all aluminium roll cages cancelled
Front suspension double unequal wishbones, upper small "A" and lower big "L", coil springs and telescopic gas shock absorbers with antiroll bar D25 to D50 diameter
Rear suspension multilink with upper small "A" wishbone, lower longitudinal radius rod, lower transverse tie rod, coil springs and telescopic gas shock absorbers with antiroll bar D25 to D50mm diameter
Steering system rack and pinion with hyrdaulic power assistance 16.5/1, 14.47/1, 15.79/1, 15.94/1 ratio. 1990: 13.3/1 ratio
Brakes front ventilated discs 302mm diameter with 1 cast iron piston caliper 60.3mm diameter, rear ventilated discs 291mm diameter with 1 cast iron piston caliper 38.1mm diameter.
Front/rear ventilated discs 304/330/356mm diameter with 4 Girling aluminium piston calipers 32/36/38.1/42.8/(2x41.3+2x38.1)/(2x44.5+2x41.3)mm pairs diameter.
Front/rear ventilated discs 280/292/305/330/356mm diameter with 4 AP aluminium piston calipers 2x38+2x42mm pairs diameter, or 280/292/305/330/356mm diameter with 4 Brembo aluminium piston calipers 38.1/(2x41.3+2x38.1)/(2x44.5+2x41.3)mm pairs diameter.
Front/rear ventilated discs 280/292/305/330/356mm diameter with 4 AP aluminium piston calipers 2x38+2x42mm pairs diameter, or 332/355mm diameter with 4 Brembo aluminium piston calipers 2x38+2x42mm pairs diameter, or 278/280/305mm diameter with 4 Brembo aluminium piston calipers 2x36+2x40mm pairs diameter
1988: Front/rear ventilated discs 327/376mm diameter with 4 Alcon aluminium piston calipers (2x41.3+2x44.5)/(2x41.3+2x38.1)mm pairs diameter.
1989: Front/rear ventilated discs 330/355/375mm diameter with 4 Alcon aluminium piston calipers (2x46.8+2x44.5)/(2x41.3+2x44.5)/(2x41.3+2x38.1)mm pairs diameter.
1990: front 6 AP aluminium piston calipers 2x28.5+2x31.7+2x41.2mm pairs diameter
dual circuit with Aisin vacuum servo or AP hydraulic servo, or without servo, wheel scraper, disc dust shield and water cooled calipers with water tank and pump for brakes windscreen and head lights cleaning
Dimensions
length: 4.620 m (181.9") width: 1752 m (69") height: 1.330 m (52.4")
wheelbase: 2.595 m (102.2 in) front track: 1.470 m (57.9") rear track: 1.475 m (58.0")
Rims - tires 16" Pirelli, front: 165/80/16" or 175/75/16" or 185/65/16", rear: 185/75/16" or 205/65/16" or 215/60/16"
Weight 1350 - 1400 kg
Fuel tank 70 lt
Drag coefficient 0.33

Results in WRC

Statistics

1987 1988 1989 Total
Works
Races 1 1 2
Entries/finishes 2/0 3/3 5/3 (60%)
Others
Races 1 1
Entries/finishes 2/2 2/2 (100%)
/Total WRC results
Races 1 1 1 3
Entries/finishes 2/0 3/3 2/2 7/5 (71.4%)
Total points 17 13 30
(10 per race)
(4.286 per entry)

Races

Works team: Toyota Team Europe

Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN TdC GRE Oly (NZ) ARG FIN (CdI) SR RAC
Lars-Erik Torph
Benny Melander
works with drawn
Björn Waldegård
Fred Gallagher
works with drawn
Statistics
Others starts/finishes 2/0 2/0

waldegaard4_clip_image015.jpg Source
Björn Waldegård in Safari '89
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Björn Waldegård in Olympus '87

Drawings

toyota_celica_supra_3_0_gt_twin_cam_1989-15594.jpg Source
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