Japan is known for some pretty outrageous cars, but even this one is over the top, even for a Japanese tuner. The inspiration to build this 5th-gen Supra came from a project car that ran 300 plus kilometers per hour. In building the Supra, tuner Smoky (nicknamed because of his love for long smoky burnouts or chain-smoking habit, take your pick) Nagata aimed for a 400 km/h top speed, who decided that a twin-turbo V12 would be just right to hit that mark.
The engine is from a JDM Toyota Century called a 1GZ-FE. Displacing 5 liters, this engine is as long as the 2JZ that originally graces the Supra, but is significantly wider. Add the twin HKS GT2540 turbos, associated plumbing and intercooler and you’ll wonder at how it all fit. Target output for the engine is 1,000 horsepower, which is almost four times what the engine originally makes, so custom internals were machined to make the engine live with the boost and output. The radiator for the cooling system has been moved to the trunk where ducting in place of the side quarter windows direct the airflow. HKS ECUs take car of engine management.
Connecting the Getrag 6-speed is a custom bellhousing, and output from the transmission is handled by a Cusco 1.5 way LSD. Coilovers are electronically height adjustable units from Nagata’s Top Secret brand and brakes are Greddy 8-pot calipers. Depending on the owner’s whim, wheels are 19-inch Rays or Volks, with Bridgestone 245/35 fronts and 275/40 rears wrapped around them.
When it went to the Nardo track a few years ago to attempt a 400 km/h run, it fell short by about 40 km/h. Smoky will have to revisit his turbo calculator to make that target velocity on the next attempt. It was supposed to make a guest appearance at the Texas Mile event this year but the East Japan earthquake happened so we have to wait a few more months to once again see this car in action.
Source for the article is here.
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