More info on Nissan's next-gen VQ-Series V6

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
Read Article

webguy - 8/23/2006 12:55:47 PM

+1 Boost

Thanks for the info XeroK00L. First time I've seen torque numbers.... I'm liking all of those numbers.

The current G is a blast to drive, but an unbearably bad interior with strange ergonomics. This one looks vastly improved. They may have a hit on their hands.

DallasMR2 - 8/23/2006 1:18:40 PM

+2 Boost

i don't think EfoxS4 was being nasty. after reading what was posted i was also wondering about HP figures AND if there was going to be a G25. they mentioned a 2.5 V6 and since they stated specifically these engines are for F/R lay out cars i would assume they are bringing one. after all, Mercedes, Lexus AND BMW all have a 2.5 to go along with their 3.5.

play nice boys! :)

I95SPEEDINGTICKETS - 8/23/2006 2:35:40 PM

+1 Boost

Commonsense
Easy Tiger!!
efoxS4 had a valid Question
The 2.5L engine was mentioned so it is not silly to wonder if there would be a G25.
Also as there were no HP figures even I would have requested them (does that make me a moron too ??)

efoxS4
Infinity is due to be Launched in the UK within the year so i assume the 2.5L is going to be the entry level to compete with the Lexus IS 250 (We dont have the IS 350 over here yet).

GUYS!!! RESERVE THE INSULTS FOR LOGICAL & HIS TYPE :)

mstangpny07 - 8/23/2006 3:16:13 PM

+1 Boost

So this won't be in the 2007 Altima? The website says "Two Next Generation Engines-.. a 265 hp V6 or a 4-cylinder with a dual exaust..."
Would this be where the VQ25HR is going?

chewy - 8/23/2006 9:16:14 PM

+1 Boost

Adoption of continuously variable valve timing control (CVTC) for intake side and electromagnetic valve timing control (e-VTC) for exhaust side

Sounds very interesting. I have always thought that electromagnetically operated valves would be the next big innovation in engine design. It would be interesting to see what Nissan means by that.

shiftless - 8/24/2006 11:29:48 AM

+1 Boost

First and foremost the 2.5 v6 is sold in japan. we will never get this engine in the U.S.The reason why is nissan went to VQ is to save in production cost.Great engines that are durable yet can be applied to front wheel and rear wheel driven vehicles.Bang for the bucks get a nissan,But if you want to pay for options that should be standard get and audi or bmw.