MKIII Differences By Year
1986.5:
Introduced as 86.5 model year, replacing the 1986 MKII Supra
Only available as a non-turbo model
Targa top available
LSD, headlight washers are a part of the "Sport Package"
TEMS optional
Late models have wiring for the "Super Monitor" -- some early models do not
1987:
First year of the Turbo model
N/A model carries over essentially unchanged, however it gets an updated radio, which has new rear plugs
Turbo model gets rear 1-piece spoiler, turbo badging, "Sport Package" is standard, gets 3.91:1 rear end gearing, opposed to the N/A's 4.30:1, also gets beefier transmission (R154 vs W58)
ABS is now an option
1988:
Essential carry-over from 1987
Redesigned rear 3rd brake light on rear spoiler (trapezoid vs rectangle)
Interior cloth material changed
Headlight pushrods threaded
Rear sway bar endlinks changed to plastic construction
Slight changes made to the climate controller, radio, and left-side buttons (made slightly darker)
Seat belt guides added to front seats
Cloth sunvisors replace vinyl ones on hardtops
1989:
N/A Models get updated cams (exact changes unknown)
MKIII recieves it's first major update, both on the interior and exterior
Redesigned mouldings (different shape, as well as being entirely plastic)
New rear tail-lights (3-piece, goes all the way across the rear) (non-European Countries Only)
New 3-piece rear spoiler
New mirrors on the doors (reshaped)
New steering wheel (cruise on/off switch moved to the wheel, switch replaced with coin holder)
New front bumper cover (including new fog lights)
New front turn signals (not as wide)
New front grilles (2 as opposed to a single one)
Cup holders added underneath center console lid
New climate control
New steering column stalks (turn signals/headlights/wipers)
Switches on left side of steering column changed from silver colour to black
Power window switches updated
Rear seatbelts are changed to shoulder belts
Front seatbelts get updated (the top mount plastic is redesigned)
Rear speakers get updated (2 extra are added in the rear panels beside the seats)
Instrument cluster updated (less lines on gauges, speedo up to 260km/h - from 240km/h, lights are now completely blacked out unless lit up)
Shift boot, shift knob, e-brake handle, steering wheel, and steering column become black
Updated stereo to match other new interior components
Seats get extra power assist (tilt back/forward - changed from the old knob on side)
Turbo rear end gets changed to 3.73:1 gearing, opposed to the old 3.91:1
Headlight washers no longer an option (US Only)
Progressive Power Steering part of Sport Package on N/A's (replacing headlight washers - US Only)
Horsepower up to 232hp (from 230hp), torque up to 254ft-lbs (from 246ft-lbs)
Halfway through 1989, the engine crossmember changes, as does the wiring harness and engine mounts, as well as the ECU
Progressive speed-based power steering added
ABS now standard
Wiring for "Super Monitor" no longer included, and it is no longer an option
"White Package" now available, includes white trim pieces, and white wheels, on a white car
Strut manufacturer changes
Car drops in height by 12mm (about 1/2")
Rear subframe receives 2 extra braces
Late models have completely standardized body harness, with wiring for every option (NA/Turbo/Manual/Auto/TEMS) -- body harness, not engine harness
At some point in the 89 model year the engine crank changed over to fully balanced 7M crank, redline dropped to 6250 from 6500
Aluminum replaces steel on the brake master cylinder
TEMS actuators become smaller
Idle speed drops to 650rpm for Turbo model (from 800rpm) and to 700rpm (from 850rpm) for N/A model (may only affect 7M-crank-equipped 7M's)
1990:
Steering wheel changes to a 4-spoke design with SRS airbag (cruise moved to stalk) (US Only)
Progressive power steering electronics get revised
Foglights now on all the time (driving lights) (Canada Only)
Larger transparent laminate area in front of rear wheel well to prevent chipping
Coinholder introduced in 1989 replaced with dimmer switch
Seat Cloth pattern changed again (line spacing changed)
1991:
Front speakers get updated to 6.5", and get a larger grille
5-spoke 16x7" rims replace the old 16x7" sawblades
Factory sunroof now an option
Subwoofer for stereo now an option (rare)
Square "Supra" emblem on nose replaced with new "T" Toyota logo
Power steering cooler added
All body trim is now the same colour as the body paint
Shadow Grey interior colour introduced (rare, closest to black you can get)
Teal exterior colour introduced
A lot of extra sound deadening material added
Heated seats added as an option (Canada Only)
TEMS no longer an option (Canada Only)
1992:
Automatic transmission shift points revised
New stereo system introduced
Remote keyless entry option added
Good Year Eagles become standard on turbos
Dark steel grey debuts as does dark green.
Targa no longer available on N/A cars
N/A model dropped (Canada Only)
87/91 TOYOTA SUP(erb)RA MKIII xxxxx 94 Supra MKIV(Backupbil)
77 Celica RA28(prosjekt) xxxxx 86 Celica T16(prosjekt)
88 Celica st165(prosjekt) xxxxx 86 MR2 AW11
93 GMC Typhoon #0139 xxxxx 93 Calibra(arbeidsbil)
73 Dodge Charger(prosjekt)