In 2017, we gave you a close up look at drift personality Ryan Tuerck’s GT4586 – a car that seemingly took over the internet’s automotive space almost overnight. That project, a Toyota 86 powered by a Ferrari 458 V-8, was put through its paces and delivered eargasms every time a video clip was released. After the “will it work” question was answered, the next question soon asked was, “how could he possibly outdo something that crazy?” The answer to that was found in the Mobil1 booth at SEMA this week.
If you haven’t followed along with Tuerck’s Instagram or regularly scheduled YouTube updates, this Mk5 Supra has been a work in progress for quite some time. Another Ferrari swap of some sort would have been interesting no doubt, but this time around it was something a bit more motorsport-focused. The heart of this new endeavor is a Judd Power GV4 V-10.
The original version of the 72-degree, 10-cylinder racing engine was introduced in the early ’90s and could be seen (and heard) in action over the years in 24 hours of Le Mans, Formula 1, Indy, CART, and even hillclimb competitions. The 4.0-liter, naturally aspirated engine sports 13:1 compression, produces 750 hp, and can be revved out to 11,000 rpm without breaking a sweat. Transmission duties are left to a Holinger Engineering FD6.
Individual throttle bodies are on display for everyone to gawk at, but AEM stepped in to develop a custom carbon plenum that seals the induction area and will offer better control over how incoming air is delivered evenly across all 10 runners. Filtered air will help this engine in terms of longevity, but even with the layer of security, these engines do require a tear down and freshening up every 3-5,000 miles.
Less Is More
In today’s automotive world of huge power numbers, many are going to state the obvious: You can make more horsepower by boosting a smaller, cheaper engine. While that’s true, the Judd GV4 is a different animal in that its sole purpose is to excel in motorsports and its performance attributes truly shine in action.
Peak horsepower is everything to some, while those that put these marvels to work in competition are far more concerned with real world ability. And put to work is exactly what the goal is, and no, it’s not intended to slide around cones. The fruits of the labor involved will be exploited in time attack competition. While the GT4586 was a demo car of sorts and not intended to compete, this Formula Supra build is track-focused.
From front to back, there’s a laundry list of custom fabrication to strengthen the body, protect the driver, and improve on the car’s track functionality. Of course, getting the engine into the car required some engineering, and the engine plates and many of the associated ancillary parts are one-off. One of the major issues was building a set of headers that would clear the sides of the engine bay. Using icengineworks’ modeling system, each runner was carefully routed and modeled, then cut and welded using Inconel.
In the rear of the car, a firewall was built and, in the trunk, a Radium Engineering 6-gallon cell secured. Underneath, provisions were made to make the rear end an easily removed affair in order to make changes quickly and efficiently. Poke around a little more and you’ll spot a carbon fiber driveshaft supplied by the Driveshaft Shop and, interestingly enough, a custom kit was formed to drive the alternator off of that driveshaft as well.
Against the Weave
With such a monumental powerplant, the exterior was due for a makeover, but not the usual aero conversions that you’ve seen used time and time again. Instead, an HGK Supra Jet bodykit was flown in. The multi-piece, carbon fiber-based kit that includes just about every panel, including the doors, was sprayed with a matte clear coat that allows the raw carbon to show through but without the sheen you’re used to. Just under each of the bulging rear quarter panels are exhaust exits with heat plates. The dark theme is further enhanced by black, centerlock Rotiform wheels with Nitto NT01. Beyond the lightweight carbon pieces, portions of the car were trimmed in search of a lower base weight.
Inside, a custom roll cage runs throughout, with a single Recaro P13 carbon fiber-backed seat, Tilton pedal box, and OMP steering wheel on board. In the passenger footwell sits a Petersen Fluid Systems oil tank for the dry sump oil set up.
Built for Battle
To build something as wild as his previous Ferrari-swapped Toyota or this Judd-powered Supra and only display them would be criminal. Fortunately, Tuerck is all about actively driving (and abusing) his next level creations, and this car is destined to compete.
Source: Read Full Article