Video: Kyushu-Danji NSX Goes Turbo!

Building on the startlingly-rapid, normally-aspirated time attack monster we reviewed recently, the clever minds responsible for the Kyushi-Danji NSX have installed a more potent powerplant mounted midship. While the former iteration of the car was responsive, quick, and capable thanks to the immense amount of downforce offered by its aero kit, there’s only so much the Honda’s V6 can provide. Of course, power is incredibly important with a time attack car, perhaps more so than in a proper circuit racer, and to capitalize on the capable platform, a modestly-sized Borg Warner snail was bolted onto the C32B engine.

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The increase in power and torque came with the appropriate aero add-ons and brakes to keep the monster on-track.

Of course, this is a simplification of the upgrades made to the car, seeing as this time attack machine is one that benefits from an obsessive attention to detail. Building boost with a rapidity seldom seen in any turbocharged motor — especially motors of a small displacement like this one — is the Borg Warner EFR9180. This twin-scroll turbocharger provides thrust and a linear power delivery in even the slowest corners.

That single-turbocharger comes complete with a gorgeous plenum similar to the one seen on the amazing NSX GT1 Turbo, another stellar Honda racer which pushed the mid-engined platform further. Seeing as the original motor was capable of nearly 400 horsepower in normally-aspirated guise, with the addition of a turbocharger and the ancillary equipment, the rebuilt C32B chucks out a stunning 650 horsepower, though the turbo is capable of flowing much more.

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The ludicrous rear wing helped the NSX nab a 54.1-second lap at Tsukuba.

Equally as impressive is the monster’s ability to stop and corner. Braking performance comes from massive AP Racing Pro 5000+ calipers mated to two-piece rotors. These pieces are larger than the brakes used on the former iteration of the car, and they, in conjunction with the massive wings, bring the Honda to a stop unbelievable quickly.

Cornering prowess comes from a widened track and an improved aerodynamic kit. One huge splitter, a massive diffuser, and an outrageous wing that could only be seen on a full-bore Japanese time attack machine give this car huge amounts of cornering and braking potential.

The performance is something special, and not just because it accelerates quickly. Not often are the rear tires overwhelmed by the massive amount of torque, such is the response and tractability of the motor, but being a nervous, mid-engined machine, it does often break away mid-corner. This lift-off oversteer goes hand-in-hand with a scalpel-sharp front end, which seems to want to turn in constantly, even on lots of throttle. It seems this car can be steered with the throttle, the brakes and the steering itself, but in offering so many variables to the driver, becomes quite sensitive under load changes.

And still, despite the immense performance on display, it appears manageable, even in the fastest sweepers which require lots of modulation of the throttle to trim the line. Poised and confidence-inspiring, this awesome build shows everything that was great about the original mid-engined NSX, the perks of modern turbocharging, and the combination that results when you bring these two elemental forces together.

About the author

Tommy Parry

Tommy Parry has been racing and writing about racing cars for the past seven years. As an automotive enthusiast from a young age, he worked jobs revolving around cars throughout high school, and tried his hand on the race track on his 20th birthday. After winning his first outdoor kart race, Tommy began working as an apprentice mechanic to amateur racers in the Bay Area to sharpen his mechanical understanding. He has worked as a track day instructor and automotive writer since 2012, and continues to race karts, formula cars, sedans, and rally cars in the San Francisco region.
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