Hellion Power Systems Twin-Turbo Coyote - Double Steam
From the August, 2012 issue of 5.0 Mustang & Super Fords
By Steve Turner
Photography by Courtesy Of Hellion Power Systems
We live in a world dominated by the change of technology. With each passing day, the digital era accelerates the way we interact with each other. It also seems to improve and morph on a moment's notice.
Certainly the automotive world has embraced technology in a bear hug, but at the heart of the cars we love there is still a combustion engine. The systems that support the engine are far more advanced, and even the engines themselves are tweaked by computer-aided design. The end result is that we have Mustangs that make more horsePower in a more driveable package than we could have imagined. Moreover, these engines respond just was well, if not better, to the tried-and-true bolt-on Power adders. There are many to choose from, but the racing world has let us know that turbos are amazingly effective at producing huge Power.
While superchargers and nitrous were the early contenders for your Power-adder dollars, our friends at Hellion Power Systems developed the first production single-turbo kit for the Coyote engine. It works quite well, but as you know, we Mustangers just can't get enough, especially when it comes to boost.
Knowing that Mustang maniacs demand more, Hellion's main man John Urist paused the off-season racing preparation. He bought a spanking new '12 GT, and built a new Hellion twin-turbo kit dubbed the Eliminator. It's no small task to develop something as complex as a turbo kit. You might expect the process to take months. However, John went from a stock car to creating a production-ready twin kit in a matter of weeks.
Those weeks just so happened to lead up to the NMRA season opener, where we first laid our eyes and cameras on the car and its kit. Obviously we were impressed by the quality of the kit, and we were glad we signed up to follow its initial installation and testing, which you are seeing here for the first time.
We're certain you'll be impressed with the results of the kit on the stock engine, but this is not the end of the road for John's silver bullet. As we type this, he is working on trading out the stock long-block for one of Ford Racing Performance Parts' boost-friendly Aluminator crate engines (PN M-6007-A50SC). With stouter internals and 9.5:1 compression, this engine will respond well when John dials in more--a lot more--boost via the Turbosmart E-Boost controller.
So strap in and see how a stock Coyote howls with twins, and stay tuned to these pages see how a built version roars with the boost cranked up. We can hardly wait.
Horse Sense: Even if you don't own an '11-and-up Mustang, Hellion offers turbo systems for everything from Fox 5.0s to Shelby GT500s. We've seen many of these kits perform at high levels during our King of the Street competition.
These are the dyno graphs...
These are the dyno graphs that we love. See those lines down low? Those are the stock numbers. That huge gap between the stock numbers and the next lines is the massive gains seen from 6.1 psi, and then 8.5 psi. The latter took the combination into the rarefied territory above 700 rwhp. That's not a place you want to go often with the stock engine, but it is possible.
As amazing as it is that the Eliminator kit nearly doubled the Power of an already potent Coyote, it is pushing the envelope of stock engine durability. Sure cranking out over seven hundie on less than 9 psi is awesome, but John Urist has bigger plans for this combination. Stay tuned to these pages to see what happens when big boost meets a Ford Racing Aluminator.
As if a Coyote wasn't intimidating...
As if a Coyote wasn't intimidating enough to would-be challengers, the sight of a TiVCT 5.0 strapped with twin turbos is a deterrent.
Even if you don't plan on going boost crazy, the standard configuration set at 6.1 psi rocks the rollers with 619 hp courtesy of a custom SCT tune. This base kit is a tuner kit, but Hellion can provide tuning and larger injectors for an additional cost.
The team at Hellion prides...
The team at Hellion prides itself on producing complete kits, and the Eliminator continues that tradition. It's a street kit that takes advantage of the latest racing technology. The four-into-one tubular headers are produced at Bassani Xhaust to Hellion's specifications, and the rest of the kit is rounded out by two Precision billet 62mm turbos, two Turbosmart 40mm wastegates; two Turbosmart VEE-port blowoff valves; a vertical-flow, dual-inlet intercooler; and two 3-inch downpipes. The kit starts at $6,995; tuning and 80-lb/hr injectors are optional.
As with almost any Power-adder...
As with almost any Power-adder installation, you'll have to open up some real estate under the hood before you start bolting on all that Power. Here John has already lifted off the engine cover and moved on to removing the inlet tubing.
The Eliminator kit doesn't...
The Eliminator kit doesn't require any cutting or welding, but it does necessitate relocating the Copperhead PCM and underhood fusebox. Here John removes the factory PCM bracketry.
Moving under the car, John...
Moving under the car, John loosens and removes the factory exhaust pipes, which join the manifolds to the H-pipe. Of course, the manifolds come off too, but Ford made the Mustang friendly to modification by giving it a modular exhaust system that is held together by serviceable clamps.
Both the steering linkage...
Both the steering linkage and engine mounts must be temporarily removed to make way for the new headers.
On the driver side it is necessary...
On the driver side it is necessary to slightly tweak the brake lines toward the shock tower to make room for the turbo tubing. John does this carefully with a socket extension, taking great care not to kink the line.
Turbochargers require oil...
Turbochargers require oil lubrication, and that means tapping into the factory engine oiling system. To return the oil to the engine, it's necessary to puncture and tap the factory oil pan. Hellion includes the necessary punch and tap. After punching the hole, John coats the tap with grease to capture any metal shavings. With the hole threaded, John installs the return fitting. Once the kit is installed, its a good idea to change the oil before you fire up the engine to make sure any stray metal is washed away.
The Eliminator kit includes...
The Eliminator kit includes the necessary bracketry to move the PCM down lower next to the frame rail. Atop this arrangement, the fusebox will reside at an angle. The factory wiring remains intact, only needing slight relocation.
With the engine mount out...
With the engine mount out of the way, the beautiful four-into-one Bassani headers tuck right up next to the Coyote block and feed the hot exhaust gasses up to the turbo.
|Stock||Hellion 6.1 PSI|
|Hellion 8.5 PSI||Stock vs. 8.5 PSI|
Here John wiggles the downpipe...
Here John wiggles the downpipe down into position. After the exhaust races through the header and spins the turbo, it returns to the factory exhaust via the downpipe.
John installs this extension...
John installs this extension on the turbo housing to distance the oil drain hose from the heat of the turbo's exhaust housing.
After running the oil drain...
After running the oil drain line up from the fitting on the pan, John attaches the line to the extension on the turbo. Then he can install the turbo on the exhaust manifold. The turbos, wastegates, and blow-off valves in the Eliminator kit all use V-band clamps, which ease installation and offer a bit of flexibility.
If you aren't familiar with...
If you aren't familiar with turbo tech, the wastegate controls the turbo's output by bypassing exhaust gasses away from the turbo. A Turbosmart E-boost 2, which allows you to remotely control the Turbosmart Comp 40 'gates, is optional. John installed one on his ride so he can easily adjust the boost level.
Possibly the best part about...
Possibly the best part about the Eliminator kit is that the two Precision T3/T4 billet 62mm turbos are clear and present in the engine compartment. It doesn't hurt that they are capable of the 1,200 hp, but opening the hood totally blows the sleeper image of John's silver 'Stang. As you can see, the kit includes a substantial twin-inlet, vertical-flow intercooler, which only requires minor trimming of the inside of the front fascia for clearance.
Hellion offers two possible...
Hellion offers two possible mass air sensor locations--one in the inlet tube and one in the intercooler. Your tuner can choose his preferred location.
On the outlet side of the...
On the outlet side of the turbos, two Turbosmart VEE-port blowoff valves relieve boost pressure when the throttle blade slams shut. This helps driveability and reduces wear and tear on both the engine and turbo. Notice how the Hellion tubing deftly moves around the factory sheetmetal.
Feeding the turbos with oil...
Feeding the turbos with oil necessitates tapping into the factory oiling system. Hellion achieves this by T-ing into the port for the factory oil pressure sensor.
Here John plumbs the valve...
Here John plumbs the valve under the hood, while the other resides on the discharge tube on the passenger side near the intercooler.
From the fittings on the block,...
From the fittings on the block, braided-steel lines transport the pressurized lubricant to the turbos.
Hellion provides a heat shield...
Hellion provides a heat shield for the battery and heat-shield sleeving for the wiring.
The 3-inch downpipes join...
The 3-inch downpipes join the Bassani X-shaped crossover via those race-bred V-band clamps. If you want to join the downpipes to the factory exhaust, that is possible as well.
As you'll see in the On the...
As you'll see in the On the Dyno sidebar, the Eliminator kit really adds big Power to the modern 5.0, but it does so in a driveable package. To prove it, John and his wife, Melissa, drove back 1,800-plus miles from Bradenton, Florida, to Albuquerque, New Mexico. The car drove like a champ and nailed down 25 mpg.
A vacuum signal lets the blow-off...
A vacuum signal lets the blow-off valves know when to bleed off excess boost. Here John T's into the factory plumbing for a vacuum signal.