There are plenty of reasons to hate the MkIII’s 7M-GTE engine. Poor head design and under-torqued head studs were common causes for complaint, as they would often lead to head gasket failures. Yes, there are plenty of cars which received the proper torque settings and managed to run a bit longer, but they were still limited by their odd bore-to-stroke ratio and the associated inability to rev very high.
Well, the legendary successor to the MkIII Supra benefitted from a much stouter motor, among other things. This car’s owner Jeff saw the light, and opted for a 2JZ to propel the hefty, 3,600-pound tourer.
The motor is very strong, and the addition of ARP head studs, new CP pistons, Manley rods, and mid-sized, 278-degree cams to the otherwise stock top end is enough to make nearly 900 horsepower. Of course the turbocharger, a Borg-Warner 366, begins building boost late, around 4,000, and pulls to 7,800 RPM. That redline comes 1,600 RPM later than the one the 7M offered, and for big boost, small displacement builds, some revs are the key to making big numbers.
While the engine is capable of 29 PSI, the car hardly hooks up on low boost. Now, the low boost setting outputs 700 horsepower at the wheels, but the Supra is shod in 275-section rear tires. For something this violent, that’s not enough, frankly, but it does add to the appeal of the car.
As Jeff is a bonafide adrenaline junkie, his quest for a thrill is enhanced by a bit of high-speed wheelspin. It’s hard to empathize with someone who doesn’t find 650 WHP enough, but maybe this man is certifiable. In any event, his insanity and attention to detail yielded one of the cleanest, meanest MkIIIs around.