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Infiniti VQ35HR V6Nissan has revealed details about its next-gen V6 engines, which will first appear in the 2007 Nissan Skyline / Infiniti G35.
The 3.5L VQ35HR and 2.5L VQ25HR feature new blocks and a host of new key components. The highlights of the engines' improvements are a 7,500 RPM redline (up from 6,600 on the previous-gen VQ), a 10% increase in fuel economy, and a SULEV emissions rating.

The VQ35HR (pictured at right), as applied in the '07 G35, will be good for over 300 horsepower, but Nissan has yet to divulge an exact number. In Japan, the '07 Nissan Skyline will be available with both the 2.5L and 3.5L engines, as was previously the case. The last-gen VQ25 made 210 horsepower -- a number that will undoubtedly go up with the introduction of the VQ25HR. There are currently no known plans to use the 2.5L V6 in North America.

Key specs of the new VQs are listed in the press release after the jump, and Nissan also released audio of what the VQ35HR sounds like, which you can stream by clicking here.

The release of the details surrounding the new powerplants has prompted enthusiastic discussion over at the FreshAlloy.com forums, where Nissan/Infiniti fans have also posted some X-Ray-type shots of the 2007 G35/Skyline's new intake and exhaust systems.

Thanks Jason for the tip!

(Press release after the jump)

[Source: Nissan via FreshAlloy.com forums]

--Engines to power all-new Skyline to be released this autumn--

TOKYO (Aug. 22, 2006)--Nissan Motor Co., Ltd., has newly developed two new-generation six-cylinder V-type engines for front-engine, rear-wheel-drive vehicles featuring powerful performance and improved environmental friendliness.

The 3.5L VQ35HR and 2.5L VQ25HR engines will be built at Nissan's Iwaki Plant in Fukushima Prefecture and will be equipped in the all-new Skyline to be released this autumn in Japan, as well as the US where the model is sold as the Infiniti G35.

Featuring newly designed engine blocks and other key components, the engines offer smooth transition to top-in-class level engine speed of 7,500 revolutions per minute drawing upon the "smooth transition" concept of the popular VQ engine, the only engine in the world to appear on Ward's 10-Best Engines list for 12 consecutive years.

The engines achieve a 10% improvement in fuel efficiency compared to vehicles equipped with the existing VQ engine and top-in-class Super Ultra-Low Emission Vehicle level emissions. SU-LEVs have 75% or less nitrogen oxide (NOx) and hydrocarbon (HC) emissions than those stipulated by Japan's 2005 exhaust emission standards.

The letters "HR" in VQ35HR and VQ25HR stand for "high revolution" and "high response."

Nissan began VQ engine production in 1994 and has produced a cumulative total of 5.5 million units as of last fiscal year, ended March 31, 2006.

Main specifications of the VQ35HR and VQ25HR engines:

Smooth transition to top-in-class level engine speed of 7,500 rpm

* Reduction of weight and friction through adoption of asymetrical piston skirt configuration
* Reduction of piston-side force through lengthening of con rod
* Addition of rudder frame, newly-designed cylinder block with significantly improved rigidity

Thrilling revving sound and top-in-class output

* Adoption of perfectly symmetrical intake system
* Adoption of continuously variable valve timing control (CVTC) for intake side and electromagnetic valve timing control (e-VTC) for exhaust side
* Reduction of intake resistance through adoption of symmetrical twin intake system and straight intake port
* Adoption of isometric exhaust manifold and perfectly symmetrical exhaust system

Improvement of fuel-efficiency and emission cleanliness

* Reduction of friction through adoption of world's first hydrogen-free, diamond-like carbon (DLC) coating
* Adoption of catalyst substrate with ultra-low heat mass, super-ignition iridium spark plug and fast light-off O2 sensor control

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    • 1 Second Ago
      • 7 Years Ago
      isnt the new skyline using the vr38?
      • 8 Years Ago
      I love the G35's engine. That V6 sounds great. I hope they put a turbo in the G35 one day. Someone has already, a twin-turbo G35 puts out 480 bhp and the single turbo 380 bhp.


      • 8 Years Ago
      Seems to me like Nissan has locked up a place on Ward's 10-Best Engine's list for another 10 years or so with this bad boy.

      #1 This engine is going into the 2007 Altima, as well as the new G35, I think. Everything I've read says the Altima is getting a "next generation VQ engine". According to the press release, this "next generation VQ engine" has only been confirmed for the new G35. However, it would make sense that it will be this same engine in detuned form going into the Altima. I'm sure within the next few years as Nissan refreshs it's lineup.. all the VQ powered car's will get this engine. Which mean's look for it to appear in the 350z soon and then the 2008 Murano, followed by the all new Maxima in 2009 (unless it goes to a V8), and who knows when, but eventually, the FX35, M35 and of course the Quest, should all get this engine.

      As for the Xterra, Pathfinder and Frontier.... they use a different version of the VQ... the 4.0 liter VQ40.
      • 8 Years Ago
      #10: Lets please set a standard in the definition of Sports Sedan. Let that definition only stipulate that a sports sedan must be rear wheel drive.

      A camery is not a sports car, it is a people mover and none of its numbers match that of the G35.
      • 8 Years Ago
      The NEXT Q-45...

      Spoke with an Infiniti rep last week who informed me that there will be no 07 Q-45. Dealers will be instructed to sell all 06 left over's and wait for the new AND redesigned Q for model year 08. This new car should be in dealer showrooms sometime in April of 2007 as an 08 model. Horsepower for their new V-8 is expected to be in the range of 350 - 375. There is even talk of a all-wheel drive model coming 18 months later... The new Q is expected to address all the interior quality issues of the previous car (we can only hope) with gizmo's galore.

      Makes you want to hold off on the new LS Lexus.

      • 8 Years Ago
      pretty sure the engine has been rated at 306hp, same as the is350. i cant find any official releases stating that, though, but that's what they're saying over at leftlanenews

      • 8 Years Ago
      I wish Nissan would use the 2.5L six in the upcoming Sentra SE-R.
      • 8 Years Ago
      GM has been making strides with its engines. The all-aluminum VVT 2.4L Ecotec is a nice engine.

      My big manufacturer powertrain rankings (efficiency, refinement are key... trend in brackets):
      1) Toyota (rising)
      2) BMW (same)
      3) VW/Audi (rising)
      4) Nissan/Renault (same)
      5) Honda (falling)
      6) GM (rising)
      7) Hyundai/Kia (rising)
      8) DCX (same)
      9) Subaru (falling)
      10) Ford/Mazda (same)
      • 8 Years Ago
      Yes, Ford needs to put their new V-6 into the Mustang with either 6-speed auto or a manual tranny. The time has come to make the committment. Leave the old 6 in for the absolute bottom of the line models and rental fleet. Like the regular gas vs premium.
      • 8 Years Ago
      Regarding the corvette's numbers... The reviews I have read suggest that its MPG numbers are largely due to the forced 1st-4th gear change when not under heavy accelleration. If other car manufacturers did this(Maybe 1st-3rd for less 'impressive' torque numbers?), would they see similar MPG rating increases?
      • 8 Years Ago
      "I don't know if a 10% bump in fuel economy is going to be enough. Every vehicle with the current VQ35 engine has pathetically uncompetitive fuel economy."

      In a trip from Baton Rouge LA to Buffalo NY and back I averaged 30mpg(regular 87) for the entire trip (including lots of city driving around Buffalo lest you think it was all interstate) in an Altima 3.5 SE. I also routinely get 26mpg(premium 93) average in my 350Z. How is that non-competitive? Or are you just pulling numbers out of the air from cars you have never driven and have no experience with? If you're using the EPA figures, they tends to underrate the VQ35 series engines for fuel economy, as many Nissan owners can testify to. The VQ35s get much better gas mileage than the smaller VQ30 I had in my old Maxima, in which I used to average 22mpg(premium 93). No doubt it is because of better electronic controls, and amazing considering how much more power the VQ35s have.

      "Over 300hp from a nat. asp. 3.5 V6. Fantastic!

      Meanwhile Ford is still making engines for their 'Stang with these numbers:
      Engine Type 4.0L SOHC 12V V6 4.6L OHV 24V V8
      Horsepower 210 @ 5250 300 @ 5750
      Torque 240 @ 3500 320 @ 4500

      Bold moves aint gonna cut it with numbers like this."

      Agreed. Ford needs to stroke that new 250hp 3.5 liter to 4.0 liters and stick it in there ASAP. Better fuel economy and power more deserving of the Mustang name. They will probably never do it though, because it would take sales away from the GT. Of course, they could always move the GT up in price a little bit and massage it to add 20-30hp...
      • 8 Years Ago
      tommy-are you coming up with that from your own knowledge/experiences? or is there some outer place that you are sourcing those from?

      because that post means nothing to me without something to back it up.
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