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MOTRS

Supra (A70)

1986-1993 / Coupe / Japan

// SPECIFICATIONS

Key Specifications

Spec Value
Production Years 1986-1993
Manufacturer Toyota Motor Corporation
Assembly Tahara Plant, Aichi, Japan
Body Style 2-door coupe (liftback), available targa roof
Layout Front engine, rear-wheel drive
Platform A70
Chassis Codes MA70 (turbo), GA70 (NA 3.0), JZA70 (1JZ turbo), GZ20 (2.0 Japan)
Wheelbase 2,594 mm
Overall Length 4,620 mm
Overall Width 1,745 mm (MA70), 1,690 mm (GA70)
Overall Height 1,300 mm
Track (front) 1,480 mm (MA70), 1,450 mm (GA70)
Track (rear) 1,470 mm (MA70), 1,440 mm (GA70)
Kerb Weight 1,510 kg (MA70 turbo, manual), 1,430 kg (GA70 NA, manual)
Weight Distribution Approximately 53/47 front/rear
Fuel Tank Capacity 70 L
Drag Coefficient 0.32 Cd

Engine Specifications

7M-GTE (Turbo, MA70)

Spec Value
Configuration Inline 6, DOHC, 24-valve
Displacement 2,954 cc
Bore x Stroke 83.0 mm x 91.0 mm
Compression Ratio 8.4:1
Power 173 kW (232 hp) @ 5,600 rpm
Torque 340 Nm (251 lb-ft) @ 3,200 rpm
Turbocharger Toyota CT-26 (single)
Boost Pressure 0.55 bar (8 psi) factory
Intercooler Air-to-air, top-mount
Fuel System Electronic fuel injection (EFI)
Fuel Requirement 98 RON (premium unleaded)
Redline 6,500 rpm
Oil Capacity 4.8 L (with filter)
Recommended Oil 15W-40 or 10W-40
Head Bolts 10 (known weakness, upgrade to ARP studs recommended)

7M-GE (Naturally Aspirated, GA70)

Spec Value
Configuration Inline 6, DOHC, 24-valve
Displacement 2,954 cc
Bore x Stroke 83.0 mm x 91.0 mm
Compression Ratio 9.2:1
Power 149 kW (200 hp) @ 6,000 rpm
Torque 275 Nm (203 lb-ft) @ 3,600 rpm
Fuel System Electronic fuel injection (EFI)
Fuel Requirement 95 RON (premium unleaded)
Redline 6,800 rpm
Oil Capacity 4.8 L (with filter)

1JZ-GTE (Twin Turbo, JZA70, JDM only)

Spec Value
Configuration Inline 6, DOHC, 24-valve
Displacement 2,491 cc
Bore x Stroke 86.0 mm x 71.5 mm
Compression Ratio 8.5:1
Power 206 kW (276 hp) @ 6,200 rpm
Torque 363 Nm (268 lb-ft) @ 4,800 rpm
Turbocharger Twin CT-12A ceramic turbos (sequential)
Fuel System Electronic fuel injection (EFI)
Fuel Requirement 98 RON
Redline 7,000 rpm

1G-GTE (Twin Turbo, GZ20, JDM only)

Spec Value
Configuration Inline 6, DOHC, 24-valve
Displacement 1,988 cc
Bore x Stroke 75.0 mm x 75.0 mm
Compression Ratio 8.5:1
Power 136 kW (185 hp) @ 6,200 rpm
Torque 245 Nm (181 lb-ft) @ 3,200 rpm
Turbocharger Twin CT-12 ceramic turbos
Fuel System Electronic fuel injection (EFI)

Transmission Options

Transmission Type Gears Applications Torque Rating
W58 Manual 5-speed GA70 (NA models) ~300 Nm
R154 Manual 5-speed MA70 (turbo models) ~500 Nm
V160 (Getrag) Manual 6-speed JZA70 (some JDM turbo) ~600 Nm
A340E Automatic 4-speed All variants (option) ~350 Nm

R154 Gear Ratios

Gear Ratio
1st 3.250
2nd 1.955
3rd 1.310
4th 1.000
5th 0.753
Reverse 3.272

W58 Gear Ratios

Gear Ratio
1st 3.285
2nd 1.894
3rd 1.275
4th 1.000
5th 0.783
Reverse 3.768

Final Drive Ratios

Model Ratio LSD
MA70 Turbo (manual) 3.727:1 Yes (Torsen or clutch-type)
MA70 Turbo (auto) 3.909:1 No (open diff)
GA70 NA (manual) 3.727:1 No (open diff)
GA70 NA (auto) 4.083:1 No (open diff)

Suspension

Component Front Rear
Type Independent, double wishbone Independent, double wishbone
Springs Coil Coil
Dampers Gas-pressurised telescopic Gas-pressurised telescopic
Anti-roll Bar Yes Yes
Bearings Pressed spherical bearings Pressed spherical bearings
TEMS Available on turbo models Available on turbo models

Note: The A70 uses spherical bearings in the suspension arms, not rubber bushings. This is a key design feature that gives the car its precise handling. Replacement with polyurethane bushings is a downgrade.

Brakes

Component Front Rear
Type (MA70 Turbo) Ventilated disc Ventilated disc
Type (GA70 NA) Ventilated disc Solid disc
Diameter (MA70 Turbo) 296 mm 290 mm
Diameter (GA70 NA) 275 mm 270 mm
Caliper (MA70 Turbo) 4-piston (front) 2-piston (rear)
ABS Available on all models

Performance (Factory/Period Tests)

Model 0-100 km/h Quarter Mile Top Speed
7M-GTE Turbo (manual) 6.1 s ~14.5 s @ 155 km/h 245 km/h (electronically limited)
7M-GTE Turbo (auto) 6.9 s ~15.2 s 230 km/h (limited)
7M-GE NA (manual) 7.7 s ~15.8 s 225 km/h
7M-GE NA (auto) 8.5 s ~16.4 s 210 km/h
1JZ-GTE (manual, JDM) 5.9 s ~14.2 s 250 km/h (limited)

Fuel Economy (Approximate, Real-World)

Model L/100 km (mixed)
7M-GTE Turbo (manual) 12-15
7M-GTE Turbo (auto) 13-16
7M-GE NA (manual) 10-13
7M-GE NA (auto) 11-14

Dimensions Comparison, Pre-Facelift vs Facelift

Dimension Pre-Facelift (1986-1988) Facelift (1989-1993)
Overall Length 4,620 mm 4,620 mm
Overall Width 1,745 mm (turbo) 1,745 mm (turbo)
Overall Height 1,300 mm 1,300 mm
Tail Lights Split (two-piece) One-piece (full-width)
Bumpers Original profile Revised, smoother profile
Interior First-generation dash Updated dash and instruments

Model Variants (Japanese Domestic Market)

Variant Engine Key Features
3.0GT Turbo 7M-GTE Wide body, LSD, sports suspension, TEMS
3.0GT Turbo Limited 7M-GTE Turbo + leather interior, power seats, cruise control
3.0GT 7M-GE NA engine, sport suspension, narrower body
3.0GT Limited 7M-GE NA + luxury features
2.0GT Twin Turbo 1G-GTE 2.0L twin turbo (tax class), narrow body
2.5GT Twin Turbo 1JZ-GTE 2.5L twin turbo (1990+), wide body, 280 hp
2.5GT Twin Turbo R 1JZ-GTE Track-focused, V160 Getrag, Torsen LSD, stiffer suspension

Common Upgrade Specifications

Injectors

Injector Flow Rate Suitable For
Stock 7M-GTE 260 cc Up to ~230 hp (stock)
Stock 7M-GE 240 cc NA applications
Aftermarket mild 440 cc Up to ~350 hp
RC Engineering 550 cc Up to ~500 hp (most popular upgrade)
Injector Dynamics ID1050X 1,050 cc Up to ~750 hp
Injector Dynamics ID1700X 1,700 cc 750+ hp (race builds)

Popular Turbo Upgrades (for 2JZ-GTE swapped cars)

Turbo HP Range Spool Character
BorgWarner EFR 6758 300-450 hp Quick spool, street-friendly
Garrett GTX3071R 350-500 hp Quick spool, responsive
BorgWarner S362 450-650 hp Moderate spool, strong mid/top
Garrett GTX3582R 500-700 hp Moderate spool, big top end
Garrett GTW3884R 600-800+ hp Slow spool, massive top end
BorgWarner S480 800-1,200+ hp Slow spool, drag racing

Service Intervals

Service Item Interval
Engine oil and filter 5,000-7,500 km or 6 months
Spark plugs 30,000 km (copper), 80,000 km (iridium)
Timing belt 100,000 km or 7 years (7M engines)
Coolant 80,000 km or 4 years
Brake fluid 24 months
Transmission oil (manual) 40,000 km
Differential oil 40,000 km
Air filter 20,000 km
Fuel filter 40,000 km

Tyre Specifications

Variant Front Rear
MA70 Turbo (stock) 225/50R16 245/45R16
GA70 NA (stock) 205/60R15 225/55R15
Common upgrade 235/45R17 255/40R17
Track setup 245/40R17 275/35R17

Production Numbers (Approximate)

Market Total Production
Japan (all variants) ~65,000
North America (all variants) ~35,000
Other markets (including grey imports to Australia) ~8,000
Total worldwide ~108,000
Model Year Notes
1986-1988 Pre-facelift. Split tail lights. Original bumper design.
1989-1993 Facelift. One-piece tail lights. Revised bumpers and interior.
1990-1993 JZA70 with 1JZ-GTE available (JDM only).

Weight Comparison

Configuration Approximate Kerb Weight
7M-GTE Turbo, targa, manual 1,510 kg
7M-GTE Turbo, hardtop, manual 1,480 kg
7M-GE NA, targa, manual 1,430 kg
7M-GE NA, hardtop, manual 1,400 kg
2JZ-GTE swapped (typical) 1,480-1,530 kg

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