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Nissan VQ engine
VQ35DE
Manufacturer Nissan Motor Co., Ltd.
Production 1994–
Predecessor Nissan VE engine
Nissan VG engine

The VQ is a V6 piston engine produced by Nissan with displacements varying from 2.0 L to 4.0 L. It is an aluminum block DOHC 4-valve design with aluminum heads. 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 (marketed as NEO-Di). The VQ series engine was honored by Ward's 10 Best Engines list every year from the list's inception until 2008.

Contents

DE series

VQ20DE

This DOHC 24-valve 2.0 L (1995 cc) V6 has bore and stroke dimensions of 76 mm and 73.3 mm respectively, along with a compression ratio ranging from 9.5 to 10.0:1. It produces 150 PS (110 kW; 150 hp) to 160 PS (120 kW; 160 hp) @6400 rpm and 137 to 145 ft·lbf (186 to 197 N·m) @4400 rpm (lean burn).

It is fitted to the following vehicles:

VQ23DE

Nissan VQ23DE engine installed in a 2004 Nissan Teana J31

The VQ23DE is a 2.3 L (2349 cc) engine equipped with CVTC (Continuously Variable-valve Timing Control). Bore and stroke are 85 mm and 69 mm, with a compression ratio of 9.8:1. It produces 173 PS (127 kW; 171 hp) @6000 rpm and 166 ft·lbf (225 N·m) @4400 rpm.

It is fitted to the following vehicles:

VQ25DE

This engine is similar to the VQ20DE, but has a 2.5 L (2495 cc) displacement. Bore and stroke are 85 mm and 73.3 mm, with a compression ratio of 9.8 to 10.3:1. It produces 190 PS (140 kW; 190 hp) to 210 PS (150 kW; 210 hp) @6400 rpm and 174 to 195 ft·lbf (236 to 264 N·m) of torque. Later versions produce 186 PS (137 kW; 183 hp) @6000 rpm and 171 ft·lbf (232 N·m) @3200 rpm.

It is fitted to the following vehicles:

VQ25DET

The VQ25DET is a turbocharged 2.5 L (2495 cc) engine with CVTC. Bore and stroke are 85 mm and 73.3 mm, with a compression ratio of 8.5:1. It produces 280 PS (210 kW; 280 hp) @6400 rpm and 300 ft·lbf (410 N·m) @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)

VQ30DE

The 3.0 L (2987 cc) VQ30DE has a bore and stroke of 93 mm and 73.3 mm respectively with a compression ratio of 10.0:1. It produces 193 PS (142 kW; 190 hp) to 230 PS (170 kW; 230 hp) @ 6400 rpm and 205 to 217 ft·lbf (278 to 294 N·m) @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 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. The VQ30DEK produces 226 PS (166 kW; 223 hp). The 1995–1999 US spec VQ30DE was equipped with only a single runner intake manifold.

It is fitted to the following vehicles:

  • 1994–1998 Nissan Cefiro (A32), 220 PS (160 kW; 220 hp) and 206 ft·lbf (279 N·m)
  • 1995–1999 Nissan QX (A32)
  • 1995–1999 Nissan Maxima (A32), 192 PS (141 kW; 189 hp) and 205 ft·lbf (278 N·m)
  • 1996–1999 Infiniti I30 (A32), 192 PS (141 kW; 189 hp) and 205 ft·lbf (278 N·m)
  • 2000–2001 Nissan Maxima (A33), 225 PS (165 kW; 222 hp) and 217 ft·lbf (294 N·m); 230 PS (170 kW; 230 hp) for Anniversary Edition SE
  • 2000–2001 Infiniti I30 (A33), 230 PS (170 kW; 230 hp) and 217 ft·lbf (294 N·m)
  • 1999–2003 Nissan Bassara U30, 223 PS (164 kW; 220 hp) and 206 ft·lbf (279 N·m)
  • 1998–2003 Nissan Presage U30, 223 PS (164 kW; 220 hp) and 206 ft·lbf (279 N·m)

VQ30DET

The 3.0 L (2987 cc) VQ30DET is a turbocharged version of the VQ30DE. Bore and stroke remain the same at 93 mm and 73.3 mm respectively, and it has a compression ratio of 9.0:1. It produces 270 PS (200 kW; 270 hp) and 271 ft·lbf (367 N·m). From 1998 onwards, it produces 280 PS (210 kW; 280 hp) @6000 rpm and 285 ft·lbf (386 N·m) @3600 rpm.

It is fitted to the following vehicles:

VQ30DETT

VQ30DETT

The twin-turbo VQ30DETT is an engine used in Nissan's race cars, primarily in the Super GT (formerly the JGTC). First used on the Skyline GT-R race cars during the 2003 season, this engine subsequently powered the Fairlady Z race cars. Homologation rules allow them to use the VQ30DETT in lieu of the stock VQ35DE. Race output of this engine is estimated at around 480 PS (350 kW; 470 hp).

The VQ30DETT was replaced in 2007 by the VK45DE for use in the Super GT Fairlady Z's and latterly in the GT-R.

It is fitted to the following vehicles:

VQ35DE

The VQ35DE engine installed in a 2007 Nissan Maxima
Cylinder head of VQ35DE

The 3.5 L (3498 cc) VQ35DE is used in many modern Nissan vehicles. Bore and stroke are 95.5 mm and 81.4 mm. It uses a similar block design to the VQ30DE, but adds variable valve timing. It produces 231 PS (170 kW; 228 hp) to 302 PS (222 kW; 298 hp) of power and 246 to 268 ft·lbf (334 to 363 N·m) of torque.

The VQ35DE is built in Iwaki and Decherd, TN. It was on the Ward's 10 Best Engines list from 2002 through to 2007. It features forged steel connecting rods, a microfinished one-piece cast crankshaft, and Nissan's nylon intake manifold technology. It has low-friction molybdenum-coated pistons and the intake is a high-flow tuned induction system.

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 300 PS (220 kW; 300 hp) at 7,200 rpm, a higher rev-limit than that of the original VQ35DE. The 350Z GT-S concept has a VQ35DE equipped with a switchable Novidem supercharger, producing around 382 PS (281 kW; 377 hp) with the supercharger switched on.

It is fitted to the following vehicles: North American

JDM and other markets

VQ40DE

The VQ40DE is a 4.0 L (3954 cc) variant of the VQ35DE due to a longer stroke. Bore and stroke are 95.5 × 92.0 mm.

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 has Nissan's direct ignition system with platinum-tipped spark plugs. It produces 268 PS (197 kW; 264 hp) to 273 PS (201 kW; 269 hp) @5600 rpm and 284 ft·lbf (385 N·m) @4000 rpm.

It is fitted to the following vehicles:

DD series

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

VQ25DD

VQ25DD

The 2495cc 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 210 PS (150 kW; 210 hp) to 215 PS (158 kW; 212 hp) @6400 rpm and 195 to 199 ft·lbf (264 to 270 N·m) @4400 rpm.

It is fitted to the following vehicles:

VQ30DD

The 2987cc engine has Bore and stroke of 93 mm and 73.3 mm, with a compression ratio of 11.0:1. It produces 230 PS (170 kW; 230 hp) to 260 PS (190 kW; 260 hp) @6400 rpm and 217 to 239 ft·lbf (294 to 324 N·m) @3600 rpm.

It is fitted to the following vehicles:

HR series

VQ25HR

The 2.5 L VQ25HR (for "High Revolution" or "High Response") is only offered on rear wheel drive vehicles. Bore and stroke are 85 mm and 73.3 mm, with a compression ratio of 10.3:1. It produces 223 PS (164 kW; 220 hp) to 225 PS (165 kW; 222 hp) @6,800 rpm and 194 ft·lbf (263 N·m) @4,800 rpm. It has CVTC, microfinished camshafts and a redline of 7,500 rpm.

It is fitted to the following vehicles:

  • 2006–present Nissan Skyline V36 250GT Sedan - 225 PS (165 kW; 222 hp)
  • 2004–present Nissan Fuga Y50 250GT - 223 PS (164 kW; 220 hp)

VQ35HR

VQ35HR

The VQ35HR update was first seen in the US in the 2007 G35 Sedan models, which debuted in August 2006. Nissan updated the VQ line with the addition of the 3.5 L VQ35HR (for "High Revolution" or "High Response"). It produces 315 PS (232 kW; 311 hp) (US market: 306 PS (225 kW; 302 hp) due to new US federal measurement regulations) at 6,800 rpm and 37 kg·m (363 N·m; 268 ft·lbf) at 4,800 rpm, using a compression ratio of 10.6:1. As of 2009, the Infiniti EX35 produces 297hp 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 7,500 rpm. Reportedly over 80% of the internal components were redesigned or strengthened to handle an increased RPM range sporting a lofty 7,500 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 freer flowing for all around better gas flow. The new intake is said to benefit from a ram-air effect adding three horsepower at 60 mph (not accounted for by SAE testing methods). 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 retains 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 7500 rpm. With an increase in compression ratio from 10.3:1 to 10.6:1 these changes add 6 more horsepower (306 total + 3 hp ram air effect not measured by SAE testing = 309 hp). Peak torque is up 8 pound-feet from the old "DE" engine (260 vs. 268) and the torque curve is higher and flatter across most of the rpm range, and especially in the lower rpm range.

The VQ35HR fitted to the following vehicles:

VHR series

It is a version of HR engine series with Nissan's VVEL (Variable Valve Event and Lift).

VQ37VHR

VQ37VHR

It is the first production car engine from Nissan using VVEL. It has an increased compression ratio of 11.0:1, with 3,696 cc (225.5 cu in) displacement (95.5mm bore and 86mm stroke), while redline remains at 7500rpm. It is rated at 333 PS (245 kW; 328 hp) at 7,000rpm and 37.2 kg·m (365 N·m; 269 ft·lbf) at 5200rpm. Although the engine gains only 0.2 kg·m (2 N·m; 1 ft·lbf) peak torque over the VQ35HR and this higher torque arrives at 5200 rpm vs. 4800 in the VQ35HR, the torque curve itself is improved and flattened via VVEL variable valve timing for better throttle response.

It is fitted to the following vehicles:

See also

Sources








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