Q50 gtr swap

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Infiniti has confirmed that its Q50 Eau Rouge concept uses the twin-turbocharged 3.8-litre V6 from the Nissan GT-R.

The Infiniti Q50 Eau Rouge – which was unveiled in full at the Geneva motor show – is stated to have 568bhp and 442lb ft, which is sent to all four wheels via a seven-speed automatic transmission.

Infiniti claims the Eau Rouge is capable of sprinting from 0-62mph in less than four seconds. It's also reputed to have a top speed of 180mph.

Despite this announcement, there is no official word on production and the firm continues to call the Infiniti Q50 Eau Rouge concept a "high-performance" styling exercise.

Infiniti president Johan de Nysschen had previously said, "The engine we are evaluating for the Q50 Eau Rouge is a big personality, V-cylinder engine with forced induction. I think our engineers have been waiting for a project like this.”

Infiniti says the car exhibits its design vision for future high-performance models, with its looks being inspired by "muscularity, refinement, and understated performance intent".

The car also features heavily revised aerodynamics, which "draw inspiration" from the collaboration between Infiniti and the Infiniti Red Bull Racing F1 team.

Much of the exterior has been redesigned in order to optimise the car's aerodynamics. The Q50 Eau Rouge is lower and wider than the production car and features a carbonfibre front splitter, rear diffuser and side skirts.

The manufacturer claims that, as a result, only the roof and door profiles remain unchanged from the conventional production version of the Infiniti Q50.

Other upgrades include 21-inch lightweight forged alloy wheels and a dual-exit sports exhaust system, further hinting at the Q50's performance-orientated intentions. Both the roof and door mirrors are also formed from carbonfibre, reducing weight.

Infiniti's executive design director, Alfonso Albaisa, said, “The design has a number of distinctive Formula One-inspired touches. In particular, the sculpted front wing assembly and the rear aerodynamic packaging take their cues from the RB9 race car.”

Infiniti has also revealed plans to equip the Q50 with a 214bhp, 235lb ft 2.0-litre engine. The 1991cc engine will drive a 7-speed automatic transmission and will launch in the Chinese market in the spring before arriving in Europe in the autumn.

Read more Geneva motor show news.

Additional reporting by Stuart Milne, 4th March 2014

Sours: https://www.autocar.co.uk/car-news/geneva-motor-show/infiniti-q50-eau-rouge-gets-gt-r-engine

Project Raijin: Turning The Q50 Into A Luxury GT-R, For Real

Step Aside Godzilla, Here Comes The God Of Thunder

Last week Infiniti Motors Ltd. invited Motor Trend out to its headquarters in Hong Kong for an exclusive deep dive on the Infiniti Q50 Eau Rouge concept.

As you'll recall, the Q50 Eau Rouge concept was first announced at the North American International Auto Show in January. There it was, shown as a design concept lacquered in 24 coats of deep red paint, but without an engine or technical specifications to speak of.

Those came with the bomb Infiniti dropped at the Geneva show - when Infiniti announced that its engineers had successfully shoehorned the Nissan GT-R's twin-turbo V-6 engine along with a 7-speed transmission and an all-wheel-drive system into the Eau Rouge. The real kicker was that the VR38DETT engine makes more power in the Eau Rouge, than in the GT-R - 560 horsepower vs. the GT-R's 545.

Finally, it would seem, a 4-door GT-R is upon us - a concept born in the minds of hot rod enthusiasts a split-second after the R35 GT-R was announced in 2007.

But that's not the case, says Peter Smith, Infiniti Deputy Program Director in charge of the Eau Rouge concept.

"We don't want to make a 4-door GT-R. It needs to be an Infiniti -- something that represents premium and luxury, but also super performance. That's the key point," says Smith.

And to be clear, the Eau Rouge is still a concept car at this point, despite much evidence to the contrary. "This is a prototype. We're still refining it on the way for bigger and greater things. We wanna make sure that it's a world beater," hedges Smith.

So how do you build a world beater? It helps to have an engine like the twin-turbo 3.8-liter V-6 found in the Nissan GT-R, but you need a lot more than that. For starters, you need vision.

"As you know we have a new leader in Johan de Nysschen," says Smith, referring to the Infiniti president who joined the company in June 2012 after a 19-year run with Audi AG. "And he called me into his office - I think I was three days into the job - sat me down and said, 'I want to make a performance line. I want to make a Q50 with a GT-R engine. '"

Read more on Project Raijin: Infiniti's Q50 Eau Rouge Concept Project: Why Didn't This Happen Sooner??

Why? To give the languishing brand a much needed spark of excitement and immediate credibility against competitors in the luxury and performance space. "We knew who they are. We knew where we needed to be," says Smith. "Let's be fair, the [BMW] M-series has been something I've salivated over ever since I was in high school. [Mercedes-Benz] AMG is not a shabby company, they have incredible competencies; [Audi's] quattro [performance division] as well.

"What's clear to us is that we can't show up to this game, with long-established players that are incredibly competent. We can't just come with something that is 'me too,'" says Smith.

So instead of coming up with a "me too" vehicle, Smith and his three-person skunkworks team decided to bring the thunder.

"As we started off the project, we called it internally, Project Raijin. Raijin is a Japanese word meaning, 'The God of Thunder.' "

Why thunder? "How do we make this super powerful - I don't want to say, monster - but something that is coming. You hear it and you feel it, as it's coming. And not something that is typical to the segment. Because again, with the specs…I mean, if we were to come up with 400 and something horsepower [car], that's fine. We can enter this M3, C63 market… But how do we come in with a thunderclap?"

"We come in with 560 horsepower and 600 Nm [443 lb-ft] of torque - and suddenly we are in a different segment, a different vehicle."

But shoehorning a twin turbo V-6 engine into a luxury sedan is not to be taken lightly and Infiniti's arsenal has other potent powertrains available, which the Project Raijin team explored:

  • Option 1: the Q50's existing 3.7-liter naturally aspirated V-6. "Let's supercharge it," says Smith. "It would be exciting, relatively straight forward, and easy to do. "
  • Option 2: the 5.6-liter V-8 that is already in the larger Q70 sedan. "The V-8 starting off at 420 horsepower already gets us there - and it's already married to the [7-speed] transmission. Tuning it a little bit to get it to 450, 480 horsepower is no problem," says Smith.
  • Option 3: the GT-R's 3.8 twin turbo V-6: "A beautiful, monster engine," says Smith, "but the GT-R engine doesn't just drop so neatly into the package. The transaxle transmission in the GT-R killed the backseat. "

Smith says the choice was easy: "So we came to back to Johan and said, 'There is an easy way to do this, there is a straightforward way to do this, and then there is the one that will make the biggest boom.' And he didn't even hesitate: 'We're going to make a boom."

About that boom: In standard trim, the Nissan GT-R's VR38DETT engine makes 545 horsepower and 463 lb-ft of torque. In the Eau Rouge, horsepower increases by 15 and torque drops by 20 lb-ft, via ECU tuning.

To cram to this output into the Eau Rouge, Smith said the team looked at many different options. "One of them, and I would say a very stupid, brute force way to do this, would be to take the GT-R chassis, and just chop off the top off and put the 4-door, Q50, shell on it," said Smith. "That would be the very fake and dirty way to do this. But that's not building a performance line - that's building a Frankenstein."

So it had to be the Q50 chassis and GT-R powerplant. But what about the transmission? The GT-R's rear transaxle would not fit in the Q50 without seriously compromising the rear seating package.

"That was the first question, 'How are you going to be able to handle the torque?'" said Smith. "So we have a beefed version of our [7-speed automatic transmission].

"Connecting the engine to a new transmission was the most significant hurdle," said Smith. "One is getting the connection, the other is the electronics. Getting the VDC, the speedometer, tach, all of the screens to work."

A further complication is that the Project Raijin team had a mandate to source as many components as possible from the Infiniti/Nissan parts bin.

"This isn't a prototype for the sake of a prototype," said Smith. "This is a prototype for the sake of a build. Everything we used had to have Infiniti part numbers; it had to be something we can could realize for the long term."

Powertrain selected, the next hurdle was getting it all to fit. "Interferences were going to be an issue," said Smith, "But the great news was the cross members were not a limiting factor. Because if you have to change the cross members, you starting having to make the car wider."

Another key issue: heat. "The GT-R engine runs hot. We looked at using the Nismo 370Z cooling package and maybe beefing it up," said Smith. "But very quickly I said, 'If we're going to get the full power out of this, we need the full cooling. Let's use the GT-R cooling package. '"

Smith is proud that his team managed to stuff the engine, transmission and all the various plumbing and heat exchangers of the cooling system into the Eau Rouge. "It's very evident in the vehicle, which gives it credibility as well. When you look at it in the front and you start to see this massive cooling system, you understand there is something more behind it."

"I was confident in the beginning -- over confident -- when I said to the designers, 'Just make one design; just make it the normal overhang. I don't even want to give engineering the opportunity to extend it.' But I can tell you very proudly today that it has the exact same dimensions as the base Q50."

Clear of these substantial hurdles, the Project Raijin team focused on completing the prototype, by reinforcing the chassis and adding an all-wheel drive system. It's not the complex ATTESA-ETS system utilized by the GT-R (and utilizes the rear transaxle) but a variant of what is used on AWD versions of the Q70.

"It favors the rear, shifts to front when we need the power," said Smith. "We changed up the diffs to larger capacities to manage the power running to the wheels."

The capacities and capabilities of other systems, like the exhaust, catalyzers, and brakes were similarly upsized. For Smith, adding the GT-R-spec Brembo brakes was critical. "I think that is something that the GT-R really stands apart on - the ability to stop after going so quickly. Particularly for [the Eau Rouge], this is something that we need - it's a must."

Surrounding those brakes is a wheel and tire package similar to what is found on the GT-R. The BBS alloys are 20 inches across and wrapped in 255 profile tires.

As you'd expect, the suspension system received a complete overhaul, with changes made to the front and rear geometry, bushings and bearings. "It's an Infiniti system tuned for performance. We received handling input from our F1 guys," says Smith. "[Infiniti Red Bull driver and four-time world champion] Sebastian [Vettel] had a lot of feedback, particularly on the handling and dynamic performance of the vehicle."

To counteract the addition of the heavier engine and transmission, the Project Raijin team focused on targeted mass reduction. All exterior sheetmetal forward of the A-pillar (bumper, hood, front fenders) have been replaced by carbon fiber reinforced plastic. CRFP is used in the trunk, rocker panels and rear bumper as well. The carbon fiber roof on the show car was studied, but is not on the prototype. Relative to the powertrain and external styling, the interior is only lightly modified. Flashy red carbon fiber panels replace wood and aluminum trim, but the big news is the new front sport seats, which Smith is quick to point out, do not come from the GT-R.

"The seats, for me, were critical," says Smith. "I didn't want the GT-R seats. They so tight. The Eau Rouge is a different car - meant to be driven every day." So the team sourced a subtle, supportive, yet surprisingly thin sport seat from Recaro.

Smith says base weights are very similar vehicle to vehicle (Eau Rouge to Q50) - which should mean just under 3800 pounds - and a hair lighter than the GT-R.

The final crux of the program for the Project Raijin team - integrating all of the complicated electronics - is something that is rarely done with prototypes not intended for serial production. "I can tell you very proudly everything works - all of the all electronics," says Smith. "The great news from this study is that everything has Infiniti parts numbers, which as you know, avoids red tape and the bureaucracy of validation." In addition: "The Q50 and GT-R are built in Tochigi [Japan, home of one of Nissan's main assembly plants], and all the parts are all there as well…"

So is that a wink and nod that the Q50 Eau Rouge is going into production?

"We have a clear vision and mandate from Johan to make this a reality," says Smith with a grin.

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Sours: https://www.motortrend.com/vehicle-genres/project-raijin-turning-the-q50-into-a-luxury-gtr-for-real/
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Infiniti Q60 with a Twin-Turbo VR38DETT V6

R31 House is building this Infiniti Q60 to compete in D1GP drift series at their company in Kamo-gun, Gifu, Japan. Under the hood sits a twin-turbo VR38DETT V6 stroked to 4.1 liters with two HKS GTII turbochargers. Their goal is 1000+ horsepower at 7,000 rpm and 120 kg-m (867 lb-ft) of torque at 4,000 rpm. Other upgrades include an Ogura clutch, Winters quick-change rear end, Wisefab suspension, Endless brakes, and carbon fiber roof.

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Infiniti Q60 with a Twin-Turbo VR38DETT V6

Source: R31 House blog via Speedhunters

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