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Nissan VG engine

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Template:More citations neededTemplate:Infobox automobile engine The VG engine is a family of V6 engines designed and produced by Nissan between 1983 and 2004.

Nissan's and Japan's first mass-produced V6, the iron block/aluminum head 60° VG engine was produced in displacements between 2.0 and 3.3 liters. Early versions used SOHC cylinder heads with two valves per cylinder; later models featured DOHC cylinder heads, four valves per cylinder, a slightly different engine block and N-VCT, Nissan's own version of variable valve timing, delivering a smoother idle and more torque at low to medium engine speeds.

Both production blocks and head castings were used successfully in the Nissan GTP ZX-Turbo and NPT-90 race cars which won the IMSA GT Championship three years in a row.

OriginsEdit

Development of the VG series began in 1979 by Nissan Machinery, a former member of the Nissan Group keiretsu. The objective was to replace the inline 6 Nissan L engine, which traces its roots back to the Mercedes-Benz M180 engine introduced in 1951, with an all-new V6.

Nissan engineers wanted the VG to have improved performance, fuel economy, reliability, and refinement, while being both lighter and more compact than its predecessor. The resulting engine was designed by Nissan from scratch, and shared few mechanical components with its predecessor, or with any other automaker. It was added to a new engine family name PLASMA (Powerful ＆ Economic, Lightweight, Accurate, Silent, Mighty, Advanced).

Extensive computer design techniques were used during development, which made the VG series one of the most advanced and high-tech engines of its day. It featured a sequential multi-port fuel injection system, and Nissan's Electronic Concentrated Control System (ECCS).

ECCS used a microprocessor and an oxygen sensor to control fuel delivery, spark timing, exhaust gas recirculation rate, and engine idle speed, depending on the current operating conditions of the engine. This system reduced carbon emissions, improved fuel economy, and improved engine performance during cold-start and warm-up conditions.

The advantages of the VG engine over its inline 6 predecessor was that its V6 configuration would have greater torsional rigidity for higher performance potential, and its shorter length would give Nissan designers and engineers more freedom for vehicle design, allowing for both more frontal crush zone space and transverse mounting for front-wheel-drive vehicles.

All VG engines use a timing belt to synchronize the camshafts with the crankshaft rather than a timing chain. The VG series engine was put into thousands of Nissan vehicles, debuting in Japan in the 1983 Nissan Gloria/Nissan Cedric, and in the US and other markets in the 1984 Nissan 300ZX.

When the Nissan VQ engine was introduced in 1994, the VG engine was slowly phased out in Nissan cars, and after 2002 it was only available in the Nissan Frontier and Nissan Xterra. The VG engine was retired in 2004, by which time all V6-powered Nissans had switched to the VQ.

VG20EEdit

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File:Nissan VG20E engine.jpg
VG20E in a Nissan Leopard

The VG20E is a Template:Convert SOHC engine produced from 1984 on. It produces between Template:Cvt and Template:Cvt net. In the earlier gross rating system, early eighties' models claim Template:Cvt.

Applications:

VG20ETEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG20ET was based on the VG20E, but with an added an Variable-geometry turbocharger. The VG20ET produces Template:Convert. This SOHC motor debuted at the same time as the VG20E. Also coming with the Y30, this motor was known as the "Jet Turbo", and came with the Nissan Leopard models XS, and XS-II Grand Selection. Contrary to the VG30ET that came out in the US, the VG20ET came with an intercooler in certain models to push the horsepower output to Template:Cvt, a great jump from the normally aspirated VG20E. The turbo included with the VG20ET had two different settings. At low speeds, the turbo's wastegate would stay closed improving the response at low rpm. At high speeds, the flap would stay open, decreasing resistance and increasing exhaust flow. At its maximum flow, the flap would open at an angle of 27 degrees, while the A/R ranged from 0.21–0.77. Being that the VG20ET had a short stroke Template:Convert, it was thought to have insufficient low end torque. Nevertheless, the VG20ET was a great improvement over the VG20E.

Applications:

VG20DETEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG20DET is an DOHC Template:Convert engine with a ceramic turbocharger and intercooler. It has a bore and a stroke of Template:Convert and produces Template:Cvt. This engine features NVTCS (Nissan's Valve Timing Control System).

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VG20PEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG20P is the Autogas (Liquified petroleum gas) version of the VG20. It produces Template:Convert at 5,600 rpm and Template:Convert at 2,400 rpm. Later versions (2004–2005) produce Template:Convert at 6,000 rpm and Template:Convert at 2,400 rpm. It is an overhead cam, twelve-valve engine.

Applications:

VG30SEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG30S is a Template:Convert SOHC twelve-valve engine with an electronic carburettor which produces Template:Convert at 4,800 rpm and Template:Convert at 3,600 rpm. This engine was mainly offered in export markets with more lenient environmental regulations, such as the Middle East and Africa.

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VG30iEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG30i is a Template:Convert engine produced from 1986 through 1989. It features a throttle body fuel injection system. It has a long crank snout, a cylinder head temperature sensor positioned behind the timing belt cover, and a knock sensor in the cylinder valley (on California models only). It produces Template:Convert at 4,800 rpm and Template:Convert at 2,800 rpm.

Applications:

VG30EEdit

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File:VG30E.jpg
VG30E

The Template:Convert VG30E produced Template:Convert and Template:Convert. Bore and stroke is Template:Convert. In the 300ZX, it produced Template:Convert and Template:Convert of torque. In April 1987 the "W" series VG30 was released, adding 5 horsepower but leaving torque unchanged. In 1989, the Maxima received the Template:Convert rating, but also used a variable intake plenum improving torque to Template:Convert at 3200 rpm.

Applications:

VG30ETEdit

File:Nissan VG30ET engine (1984 300ZX Turbo).jpg
VG30ET in a 1984 300ZX (Z31)

The Template:Convert VG30ET was available in early production with a single Garrett T3 turbocharger at Template:Convert and a 7.8:1 compression ratio. The USDM and JDM version produced Template:Cvt and Template:Convert. European versions produced Template:Convert and Template:Convert. When "W"-Series VG30 was released in April 1987, horsepower was increased to Template:Cvt. All 1987 models featured a T3 turbocharger at Template:Convert. In 1988 the compression ratio was changed to 8.3:1 and turbocharged with a single Garrett T25 turbocharger at Template:Convert to reduce turbo lag.

The engine specified as the VG30ET engine in the Nissan GTP ZX-Turbo Racecar, was a heavily modified VG30ET producing over Template:Convert at 8,000 rpm, and over Template:Convert at 5,500 rpm.<ref>[1] Nissan Heritage Collection - November 2019</ref>

Applications:

VG30DEEdit

File:1990 300zx engine.jpg
VG30DE

The first DOHC 24 valve VG30DE engine was developed for the 1985 MID4 concept. The Template:Convert VG30DE produces Template:Convert and Template:Convert. Bore and stroke is Template:Convert. Original Japanese market units claimed Template:Convert.<ref name="CG80">Template:Cite book</ref> There are two versions of the VG30DE. The first was introduced in 1986 on the Japanese 300ZR (Z31) and Nissan Leopard F31, and were never sold in North America. The VG30DE has two throttle bodies facing the front of the vehicle (Nissan 300ZX and Fairlady Z) or two throttle bodies to the left (sedans and 300ZR). It was also installed with N-VTC, an early form of variable valve timing.

Early VG30DEs used large oval intake ports, and round exhaust ports, though the flange was similar to the SOHC VG engine, bolt spacing was slightly different. Late VG30DE's used slightly smaller oval intake ports, and oval exhaust ports. The bolt spacing was shared with the round-port variant from earlier years.

Applications:

Years Model Power output
1985 Nissan MID4 Concept (Not-Production)
1986–1989 Nissan 300ZX Z31 (300ZR only) Template:Convert
1990–1997 Nissan 300ZX Z32 Template:Convert
1989–2000 Nissan Fairlady Z Z32 Template:Convert
1986–1992 Nissan Leopard F31 Template:Convert
1992–1998 Infiniti J30/Nissan Leopard J Ferie Template:Convert
1992–1995 Nissan Gloria and Cedric Template:Convert
1989–1991 Nissan Cima Template:Convert

VG30DETEdit

The VG30DET is a Template:Convert, 24-valve, DOHC, VTC-equipped engine equipped with a T3 (Nissan N1 Type) 4-bolt Garrett Turbo running between Template:Convert. Generating up to Template:Cvt and measuring Template:Convert depending on the production year and application.

While this engine is similar to the VG30DE, it used different heads and inlet manifold. Contrary to popular belief, it was not available in the Nissan 300ZR model - the 300ZR only had an early version of the VG30DE (non turbo). The engine was available in the Cedric, Gloria, Cima and Leopard chassis.<ref>Answers to Readers Questions By: Sarah Forst NissanPerformanceMag.com - September 2003</ref> It is a single-turbo engine that was used from 1987 through 1995 in the Japanese market, and the predecessor for the VG30DETT engine.

Applications:

VG30DETTEdit

File:VG30DETT 001.jpg
VG30DETT

The VG30DETT is an iron block/aluminum head twin-turbo, twin intercooler Template:Convert version first seen in the 1987 MID4-II concept. Producing Template:Convert in the MID-4 and coming in at a weight of Template:Cvt, it was the last of Nissan's DOHC belt driven 4 valve per cylinder turbocharged engines put into production, following the CA18DET and RB20DET.

The engine's hybrid T22/TB02 twin-turbos were developed exclusively for Nissan,<ref>Template:Usurped, JDM Spec Engines</ref> and it came with Nissan's NVTCS valve timing control system).

The production engine develops Template:Convert at 6400 rpm and Template:Convert at 3600 rpm with a five-speed manual transmission, and Template:Convert and Template:Convert of torque with a four-speed automatic transmission.

JDM cars claimed Template:Convert, as the Japanese automobile manufacturers were limited to that number.

Applications:

VG33EEdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The VG33E is a Template:Convert cast iron block, aluminum head, SOHC version produced between 1996 and 2004. It has sequential fuel injection, two valves per cylinder with self-adjusting hydraulic followers, forged steel connecting rods, one-piece cast camshafts, and a cast aluminum lower intake manifold, with either a cast aluminum or plastic/composite upper intake manifold plenum.

Bore and stroke are Template:Convert. Compression ratio is 8.9:1. Output is Template:Convert at 4,800 rpm, depending on year/vehicle, with Template:Convert of torque at 2,800 rpm.

The VG33E was built in Smyrna, Tennessee, and used in SUVs, pickups, and minivans.

Applications:

The VG33E reportedly remained in production in the Nissan Paladin (rebadged as Dongfeng Oting) as an optional engine for the Chinese market until 2015.

VG33EREdit

{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= {{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Ambox }} }} The Template:Convert VG33ER is a supercharged version of the VG33 only sold in North America. It produces Template:Convert at 4,800 rpm with Template:Convert of torque at 2,800 rpm.

Applications:

  • 2001–2004 Nissan Frontier SC
  • 2002–2004 Nissan Xterra SC

See alsoEdit

ReferencesEdit

Template:Reflist

External linksEdit

Template:Nissan Sportscar Racers Template:Nissan

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