The VQ is a family of V6 24V automobile engines developed by

Nissan , trade name, trading as Nissan Motor Corporation and often shortened to Nissan, is a Japanese multinational corporation, multinational Automotive industry, automobile manufacturer headquartered in Nishi-ku, Yokohama, Japan. The company sells ...

with displacements varying from 2.0 L to 4.0 L. It is an aluminum block DOHC 4-valve (per cylinder) design with aluminum

heads A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may no ...

. It is fitted with Nissan's EGI/ECCS sequential multi-point fuel injection (MPFI) system. Later versions feature various implementations of variable valve timing and replace MPFI with

direct fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All compr ...

(marketed as NEO-Di). The VQ series engine was honored by Ward's 10 Best Engines list almost every year from the list's inception. The VQ series replaced the VG series of engines. 1st gen (1994-) * VQ20DE * VQ25DE 1st * VQ30DE * VQ30DET 2nd gen (2000-) * VQ23DE (2003-) * VQ25DE 2nd gen (2004-) * VQ35DE (2000-) * VQ40DE 3rd gen * VQ25HR * VQ35HR (2006-) * VQ37VHR (2008-)

DE series

VQ20DE

This DOHC 24-valve V6 has

bore Bore or Bores often refer to: *Boredom * Drill Relating to holes * Boring (manufacturing), a machining process that enlarges a hole ** Bore (engine), the diameter of a cylinder in a piston engine or a steam locomotive ** Bore (wind instruments), ...

and

stroke A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin ...

dimensions of respectively, along with a compression ratio ranging from 9.5 to 10.0:1. It produces to at 6400 rpm and at 4400 rpm (lean burn). It is fitted to the following vehicles: * 1994–2003 Nissan Cefiro A32 and A33 * 1995–1999 Nissan QX A32 * 1998–2005 Renault Samsung SM5 KPQ/A32

VQ23DE

The VQ23DE is a 2.3 L (2349 cc) engine equipped with CVTC (Continuously Variable-valve Timing Control). Bore and stroke are , with a compression ratio of 9.8:1. It produces at 6000 rpm and at 4400 rpm. It is fitted to the following vehicles: * 2003–2008 Nissan Teana 230JM-J31 * Nissan Cefiro (Neo VQ23) * 2006–2011 Renault Samsung SM7 (Neo VQ23) * 2008–2011

Renault Safrane The Renault Safrane is an executive car (E-segment in Europe) designed and built by the French manufacturer Renault from 1992 until 2000. Throughout its production it remained the most expensive and most luxurious Renault available, although it ...

(Neo VQ23)

VQ25DE

This engine is similar to the VQ20DE, but has a displacement. Bore and stroke are , with a compression ratio of 9.8 to 10.3:1. It produces at 6400 rpm and of torque. Later versions produce at 6000 rpm and at 3200 rpm. In some Nissans, this engine was replaced by the

QR25DE The QR family of Inline-four engine, inline-four piston engines by Nissan were introduced in 2000 and range from in displacement. These motors are aluminum, dual overhead camshaft (DOHC), four-valve designs with variable valve timing and optional ...

. * 1994–1998 Nissan Cefiro (A32) * 2000–2003 Nissan Cefiro (A33) * 1996–1999 Nissan Leopard (FY33) * 1997–1999 Nissan Cedric (Y33) * 2004–2007 Nissan Fuga (Y50) * 2004–2007 Infiniti M (Y50) * 2004–2010 Nissan Elgrand (E51) * 2008–2011 Nissan Teana (J32) * 1998–2005 Renault Samsung SM5 (KPQ/A32) * 2010–2019 Renault Samsung SM5 (L43) * 2010–2015 Renault Latitude (L43)

VQ25DET

The VQ25DET is a

turbocharged In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

engine with CVTC. Bore and stroke are , with a compression ratio of 8.5:1. It produces at 6400 rpm and at 3200 rpm. It is fitted to the following vehicles: * 2001–2004 Nissan Stagea 250t RS FOUR V, 250t RX FOUR and AR-X FOUR (NM-35) * 2001– 2004 Autech Axis (NM35)

VQ30DE

The VQ30DE has a bore and stroke of respectively with a compression ratio of 10.0:1. It produces to at 6400 rpm and at 4400 rpm. The VQ30DE was on the Ward's 10 Best Engines list from 1995 through 2001. It is an aluminum open deck block design with microfinished internals and a relatively light weight. An improved version of the VQ30DE is known by the designation VQ30DE-K. The K designation stands for the Japanese word

kaizen is concept referring to business activities that continuously improve all functions and involve all employees from the CEO to the assembly line workers. ''Kaizen'' also applies to processes, such as purchasing and logistics, that cross organ ...

which translates to "improvement". The engine was used in the 2000–2001 Nissan Maxima and adds a true dual-runner intake manifold for better high-end performance compared to some earlier Japanese and Middle-East market versions of this engine (2000-2001 Infiniti I30 models added an additional fenderwell intake, boosting power to ). The VQ30DEK produces . The 1995–1999 US spec VQ30DE was equipped with only a single runner intake manifold. * 1994–1998 Nissan Cefiro (A32), and * 1995–1999 Nissan QX (A32) * 1995–1999 Nissan Maxima (A32), and * 1996–1999 Infiniti I30 (A32), and * 2000–2001 Nissan Maxima (A33), and ; for Anniversary Edition SE * 2000–2001 Infiniti I30 (A33), and * 1999–2003

Nissan Bassara The Nissan Bassara is a minivan/MPV manufactured from November 1999 to June 2003 by Nissan. The name is derived from the Sanskrit word "Vajara", which means "the prize or object of desire that encourages someone to yield to temptation." The Bassara ...

U30, and * 1998–2003

Nissan Presage The is a minivan produced by Japanese automaker Nissan from 1998 to 2009. The Presage was only officially sold by Nissan in Japan, Hong Kong and Singapore. The name "Presage" is French for "omen".World Series by Nissan

VQ30DET

The VQ30DET is a turbocharged version of the VQ30DE. Bore and stroke remain the same at respectively, and it has a compression ratio of 9.0:1. It produces and . From 1998 onwards, it produces at 6000 rpm and at 3600 rpm. It is fitted to the following vehicles: * 1995–2004 Nissan Gloria Y33, Y34 * 1995–2004

Nissan Cedric The is a large automobile produced by Nissan since 1960. It was developed to provide upscale transportation, competing with the Prince Skyline and Gloria which were later merged into the Nissan family. In later years, the Nissan Skyline was posi ...

Y33, Y34 * 1996–1999

Nissan Leopard The Nissan Leopard is a line of sport/luxury cars built by Japanese carmaker Nissan. The Leopard began life in 1980 and was discontinued in 1999. The Leopard were initially based on the Japanese market Nissan Skyline and Nissan Laurel, then later ...

Y33 * 1996–2001 Nissan Cima Y33 * 2001–2007 Nissan Cima F50

VQ30DETT

The twin-turbo VQ30DETT is an engine used only in Nissan's race cars, primarily in the

Super GT Super GT (stylized as SUPER GT) is a grand touring car racing series that began in 1993. Launched as the , generally referred to as either the JGTC or the All Japan Grand Touring Car Championship, the series was renamed to Super GT in 2005. It is ...

(formerly the JGTC). First used on the

Skyline GT-R A skyline is the outline or shape viewed near the horizon. It can be created by a city’s overall structure, or by human intervention in a rural setting, or in nature that is formed where the sky meets buildings or the land. City skylines ...

race cars during the 2002 season, this engine subsequently powered the

Fairlady Z The Nissan Z-series is a model series of sports cars manufactured by Nissan in seven generations since 1969. The original Z was sold in October of 1969 in Japan as the at Nissan Exhibition dealerships that previously sold the Nissan Bluebi ...

race cars.

Homologation Homologation (Greek ''homologeo'', ὁμολογέω, "to agree") is the granting of approval by an official authority. This may be a court of law, a government department, or an academic or professional body, any of which would normally work fr ...

rules allow them to use the VQ30DETT in lieu of the stock VQ35DE. Race output of this engine is estimated at around . The VQ30DETT was replaced in 2007 by the VK45DE for use in the Super GT

's and later in the GT-R. It was utilized in the following vehicles: * 2002–2003

JGTC race cars (Non-Production) * 2004

JGTC race cars (Non-Production) * 2005–2006

race cars (Non-Production)

VQ35DE

The VQ35DE is used in many modern Nissan vehicles. Bore and stroke are . It uses a similar block design to the VQ30DE, but adds variable valve timing ( CVTCS). It produces from of power and of torque depending on the application. The VQ35DE is built in Iwaki and

Decherd, TN Decherd is a city in Franklin County, Tennessee, United States. The population was 2,246 at the 2000 census and 2,361 at the 2010 census. History Peter Decherd came to the area in 1831 from Franklin County, Virginia and set up a plantation. In t ...

. It was on the Ward's 10 Best Engines list from 2002 through to 2007 and again in 2016. It features forged steel connecting rods, a microfinished one-piece forged crankshaft, and Nissan's nylon intake manifold technology. It has low-friction

molybdenum Molybdenum is a chemical element with the symbol Mo and atomic number 42 which is located in period 5 and group 6. The name is from Neo-Latin ''molybdaenum'', which is based on Ancient Greek ', meaning lead, since its ores were confused with lea ...

-coated pistons and the intake is a high-flow tuned induction system. Since its inception Nissan has improved upon the VQ35DE with changes keeping it an efficient class leading V6 engine. The engine was updated in 2005 as the VQ35HR (Hight-Rev). It included exhaust timing, a higher rev limit, as well as minor internal upgrades boosting the output to 313 horsepower. A modified version of the VQ35DE, called the S1, is produced by Nismo (Nissan's motorsports and performance division) for the Fairlady Z S-Tune GT. It produces at 7,200 rpm, a higher rev-limit than that of the original VQ35DE. '' North American'' '' JDM and other markets''

VQ40DE

The VQ40DE is a longer stroke variant of the VQ35DE. Bore and stroke are . Compression ratio is 9.7:1 Improvements include continuously variable valve timing, variable intake system, silent timing chain, hollow and lighter camshafts and friction reduction (microfinished surfaces, moly coated pistons). It is port fuel injected with platinum-tipped spark plugs. It produces at 5600 rpm and at 4000 rpm.

DD series

The DD series is a variant of the DE series engines with direct fuel injection (NEO-Di) and eVTC (electronically controlled continuously variable valve timing).

VQ25DD

The engine has Bore and stroke of 85 mm and 73.3 mm respectively, with a compression ratio of 11 to 11.3:1. It produces to at 6400 rpm and at 4400 rpm. It is fitted to the following vehicles: * 1999–2002 Nissan Cefiro A33, (JDM) * 1999–2004

/ Nissan Gloria * 2001–2006 Nissan Skyline V35, * 2001–2007 Nissan Stagea M35,

VQ30DD

The engine has Bore and stroke of 93 mm and 73.3 mm, with a compression ratio of 11.0:1. It produces to at 6400 rpm and at 3600 rpm. It is fitted to the following vehicles: * 1997–1999

Y33 and * 1999–2004

Y34 * 1999–2004 Nissan Gloria Y34 and * 2001–2004 Nissan Skyline V35 * 2001–2004 Nissan Stagea M35 and

VQ35DD

A larger 3.5L with direct-injection is released for 2017 model year. It is fitted to the following vehicles: *2017–present Nissan Pathfinder (284 hp) *2017–present

Infiniti QX60 The Infiniti QX60, formerly called the Infiniti JX until 2013, is a mid-size luxury crossover SUV with three-row seating produced by Infiniti, the luxury vehicle division of Japanese automaker Nissan. It is underpinned by an elongated Nissan Mura ...

(295 hp)

VQ38DD

A 3.8 L version with direct-injection is released for 2020 model year. It is fitted to the following vehicles: *2020–present Nissan Frontier (310 hp)

HR series

VQ25HR

The 2.5 L VQ25HR (for "High Revolution" or "High Response") is only offered on longitudinally-mounted engine vehicles which tend to be rear wheel drive or all-wheel drive. Bore and stroke are , with a compression ratio of 10.3:1. It produces at 6,800 rpm and at 4,800 rpm. It has dual CVTC for both intake and exhaust, microfinished camshafts and a redline of 7,500 rpm. It is fitted to the following vehicles:

VQ35HR

The VQ35HR engine was first seen in the US with the introduction of the updated 2007 G35 Sedan model, which debuted in August 2006. Nissan updated the VQ line with the addition of the 3.5 L VQ35HR (for "High Revolution"). It produces (US market: using the revised SAE certified power benchmark) at 6,800 rpm and at 4,800 rpm, using a compression ratio of 10.6:1. As of 2009, the Infiniti EX35 produces and the same torque presumably due to tighter regulations. It has NDIS (Nissan Direct Ignition System) and CVTC with hydraulic actuation on the intake cam and electromagnetic on the exhaust cam. Redline is 7,600 rpm. Reportedly over 80% of the internal components were redesigned or strengthened to handle an increased RPM range sporting a lofty 7,600 rpm redline. A new dual-path intake (two air cleaners, throttle bodies, etc.) lowers intake tract restriction by 18 percent and new equal-length exhaust manifolds lead into mufflers that are 25 percent more free-flowing for all around better airflow. The electrically actuated variable valve timing on the exhaust cams to broaden the torque curve is new over the "DE" engine. The new engine block retained the same bore and stroke, but the connecting rods were lengthened and the block deck was raised by 8.4 mm to reduce piston side-loads. This modification, along with the use of larger crank bearings with main bearing caps reinforced by a rigid ladder-type main cap girdle to allow the engine reliably rev to 7600 rpm. With an increase in compression ratio from 10.3:1 to 10.6:1 these changes add 6 more horsepower ( total + 3 hp ram air effect not measured by SAE testing = ). Peak torque is up 8 pound-feet from the older "DE" engine, vs and the torque curve is higher and flatter across most of the rpm range, and especially in the lower rpm range. The VQ35HR was utilized in rear-wheel-drive platforms while the VQ35DE continued to power Nissan's front-wheel-drive vehicles. In 2010, Nissan introduced a hybrid version of the VQ35HR, pairing the engine to a lithium-ion battery pack. NISSAN FUGA HYBRID powertrain

VQ38HR

By 2007, Nissan's ambition to increase the competitiveness of the Z33 chassis in Super Taikyu racing resulted in the development of a larger displacement engine based on the original VQ35HR Block. The end result was the VQ38HR powered Nismo Type 380RS-C which went on to dominate ST class 1 racing. The 3.8-liter racing engine in the 380RS-C develops maximum power of more than , and maximum torque of . In order to use this new engine in Super GT GT500, limited numbers of the engine were reproduced in the street-legal Fairlady Z Nismo Type 380RS. The VQ38HR engine mounted in the 380RS is a detuned, street version of the racing engine used in the 380RS-C. The engine displacement remains the same, while the intake manifold and exhaust, air-fuel ratio, ignition timing, VTC and other specs have been optimized for street use. The engine produces maximum power of at 7200 rpm, and maximum torque of at 4800 rpm. The VQ38HR fitted to the following vehicles: * 2007–2008

Nissan Fairlady Z The Nissan Z-series is a model series of sports cars manufactured by Nissan in seven generations since 1969. The original Z was sold in October of 1969 in Japan as the at Nissan#Japan, Nissan Exhibition dealerships that previously sold the Ni ...

Version Nismo Type 380RS-C * 2007–2008

Version Nismo Type 380RS *

Production

The VQ35HR and VQ25HR engines were built at Nissan's Iwaki Plant in Fukushima Prefecture.

VHR series

The VHR series is a variation of the VQ-HR engine series with

VVEL Nissan Variable Valve Event and Lift (commonly abbreviated as VVEL) is an automobile variable valve timing technology developed by Nissan. Nissan VVEL was first introduced to the US market in late-2007 on the 2008 Infiniti G37 Coupe sporting the ...

( Variable Valve Event and Lift).

VQ37VHR

It was the first production engine from

using

.
It has a

compression ratio The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the stati ...

of 11.0:1, with a

displacement Displacement may refer to: Physical sciences Mathematics and Physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

of , thanks to a

of and a

redline Redline refers to the maximum engine speed at which an internal combustion engine or traction motor and its components are designed to operate without causing damage to the components themselves or other parts of the engine. The redline of an en ...

of 7,500 rpm.
It is rated at at 7,000 rpm and of torque at 5,200 rpm, and up to at 7,400 rpm and of torque at 5,200 rpm.

Although the engine VQ37VHR gains only and in the Nissan 370Z Nismo, torque over the VQ35HR and this higher torque arrives at 5,200 rpm vs 4,800 rpm in the VQ35HR, the torque curve itself is improved and flattened via

variable valve timing for better throttle response and low rpm torque.

References

External link

* {{DEFAULTSORT:Nissan Vq Engine VQ V6 engines Gasoline engines by model