Prior to 1991 Toyota sold the Turbo A supra, which ran the 7M-GTEU motor, a modified version of the standerd 7M-GTE. The Turbo A cars where all black, with the standard "See Saw" rims powder coated Gun Metal. The Turbo A Supras where a Limited Edition model where only 500 were ever where made, the creation of this model was aimed towards Privateer racers who where racing in Grand Touring racers all thru out the world besides North America. Before the Production of the Nissan Skyline GT-R, the Turbo A Supra was the fastest Japanese production car in existence.
The creation of the Nissans Skyline GT-R, opted Toyota to introduce the 1JZ-GTTE Twin Turbo motor. The Supra Turbo R JZA70, as it became to be known, hit the streets to show off toyotas engineering feet of Twin Turbo technology, in hopes of sharing Nissans quest of fighting German Engineering.
Sadly the likes of the 1JZ-GTTE, never came to America. The last models sold in America from 91' to 92'continued to receive the outdated and restricted USDM 7M-GE and 7M-GTE engines.
Today the MKIII, or MA70 as JDM enthusiast like to put it, can be had for $2000-$5000 depending on the condition and mileage. Cars that are bought with over eighty-thousand miles, should have the head gasket replaced with an aftermarket unit and specifically ARP head bolts or studs. As the factory settings of 53psi to bolt down the head isn't up to par for even the mildest drivers.
Long and steady, these cars are fun tuner build ups. Without as much aftermarket support as the MKIV JZA80 supra, E-Bay searches could find an enthusiast rare HKS tuning parts which have been discontinued in Japan for over a decade.
The besides the head gasket troubles, the 7M motor is very sound. The 3000 intake pipe and throttle body may be a hassle for some when it comes to basic maintenence, but all in all these cars where built right.
People who have modified and tune these motors have been know to reach over 600 horse power on the stock bottom and of course with a stronger head gasket with a little bit of work on the top end.
All engines have an incredible amount of strength and potential. Many people achieving 500rwhp and some going as far as 700-800rwhp. These cars are underrated and unappreciated. However, it increases the stealth factor.
Head gasket problems (BHG) were caused by Toyota torque specs being too low along with having a composite head gasket.
The MkIII was powered by a 1G, 7M, and 1JZ engine between 1986.5 and 1992 in the United States.
Base line models were naturally aspirated with a hard top, but still boasted a 200hp power engine and all the amenities of a GT such as Air coditioning, power steering/windows/seats, heated glass & mirrors, 16" wheels.
Comsumers Cars Best New Cars of 1989.
"Think of it as a Porsche 928 with a $50,000 rebate.", "Excellent Ride and handling in a sophisticated and powerfull sports car", "The best looking sports car to come from Japan.", and "Comparies well in terms of horsepower.. The best ride comfort in the group" Comapred to the Corvette, Camero, 300Z, and Porsche 944.
Car and Driver April 1989.
"The Supra will impress you as favorably on freeways as it does on two-lane roads." And "Snaky secondary roads can be taken at silky-smooth, highspeed cruise or attacked with full tail-out, junk yard dog abandon."
Motor Trend's 1989 New Car Buyers Guide.
"It weights 300 pounds more than a Corvette yet it feels smaller and lighter. It establishes a 0.87g lateral acceleration, yet it produces a suppleness of ride the Corvette cannot approach."