Nissan Sentra Spec

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Nissan Sentra Spec
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The Nissan Motor Co., Ltd. said last Tuesday that it aims to cut 1,500 jobs through an early retirement program in a move aimed at shoring up drooping earnings.

The early retirement program of the third biggest Japanese automaker will be extended to some 12,000 employees in Japan and the impact on earnings will be announced this Thursday, said the company spokesman Simon Sproule. "It is one of the measures we have taken recently to help boost performance," added Sproule. "It's about making sure structurally we're right sized."

The program follows a similar retirement program in the United States earlier this year that had targeted 300 job cuts but ended with about 775 workers accepting. Nissan slashed its profit forecast 12 percent for the fiscal year through March after seeing a 22 percent drop in earnings in the last quarter of 2006.

The backtracking strained President Carlos Ghosn to declare his company in a "performance crisis." Ghosn was once credited for saving the automaker which then near bankruptcy. In another blow, Nissan said earlier this year it may miss its target of selling 4.2 million vehicles globally in the fiscal year ending March 2009 as part of a three-year restructure plan.

The Japanese automaker will accept applications for early retirement between June 1 and March 2008. The program will be offered to full-time employees over 45 years of age with at least five years of service to the company. In a statement, the automaker said the program was designed to "balance staffing levels with assembly requirements."

However, the weak performance of Nissan's product lines was blamed on a dearth of new models in North America and sluggish sales in Japan. Moreover, experts in the industry predict it would take a longer time for Nissan to meet its target.

Tokyo-based Nissan, which previously marketed its product lines under the Datsun name, also intends to move its headquarters to Yokohama, Kanagawa. According to the company, the construction of the new facility will start this year. Nissan's new facility will be ready by 2010.

Nissan is included in the top three Asian rivals of Detroit's Big Three. It became even stronger in 1999 when it entered an alliance with France-based Renault S.A. The Japanese automaker is famed for its creation of Nissan Xterra parts and VQ engine units.

The Nissan VQ engines of the company have been featured among Ward's 10 Best Engines for 12 straight years, since the award started. The new generation VQ will be featured on the new Infiniti G35, the future GT-R and the 2007 Nissan 350Z.

The automaker will also unleash the new generation 2.5VQ 4-cylinder engine that will power the next generation Altima and likely will power the forthcoming SPEC-V 2007 Sentra.

Ryan Thomas is a native of Denver, Colorado. He grew up in a family of car afficionados. He now resides in Detroit where he owns a service shop and works part time as a consultant for a local automotive magazine.

Two 2.5s: A History of the 2.5L Engines in the Subaru Outback and Nissan Sentra

Cars powered by 2.5-liter engines, like the Subaru Outback or Nissan Sentra, tend to be zippy and responsive, even though these two don't belong to the same class.

The Subaru Outback engine has quite a history and evolution. Formally introduced at the 1994 New York Auto Show, the car was launched initially with the DOHC 2.2-liter flat-4 engine, and was promptly given a 10-hp improvement in 1998.

A flat-4 design, also called a horizontally-opposed-4, has two cylinders mounted on each side of the crankcase. This is the same design used for the engine of the classic Volkswagen Beetle.

The pistons move in opposite directions, analogous to a boxer slamming his gloves together, thus earning the nickname boxer engine. The counteracting motion contributes to the substantial canceling out of vibration.

This is how the Subaru Outback engine evolved:
* First generation - 2.2L SOHC 135 hp (101 kW) H4

* Second generation - 2.5L SOHC 165 hp (123 kW) H4

* Third generation - 2.5L SOHC 175 hp (130 kW) H4 or 2.5L DOHC 250 hp (186 kW) H4 turbo

* Fourth generation - 2.5i SOHC i-AVLS 170 hp (130 kW) H4

The 2.5i models produce 170 hp and 170 lb-ft of torque, coupled to a six-speed manual transmission that enhances superb performance features.

Some owners of the 2.5-liter Outback engine have encountered head gasket problems or failures when these overheat too often, resulting in thermally warped heads, but Subaru has already redesigned the head gaskets with good success.

The engine uses a timing belt that may have to be replaced every 100,000 miles (160,000 km) or so.

The Nissan Sentra engine, on the other hand, was introduced during 1982 with the Nissan Sunny, and has gone through a series of incremental improvements.

By 2002, a new 165-horsepower SE-R was in circulation, coupled with a 5-speed manual transmission or optional 4-speed automatic.

The QR line of inline- or straight-4 piston engines from Nissan come in displacements of 2.0 liters to 2.5 liters. They share aluminum, dual overhead camshaft (DOHC) pedigrees with optional direct injection in four-valve configuration and variable valve timing.

The Nissan Sentra engine for the SE-R Spec V sport compact variant is the 2.5-liter QR25DE, which was originally mated to the Nissan Altima. It could put out 175 hp at 6000 rpm and 180 lb·ft (244 N·m) of torque at 4000 rpm, sufficient to accelerate the car to 60 mph (about 100 kph) in less than seven seconds.

The QR25DE comes out of the plant in Decherd, TN with aluminum intake manifold, connecting rods made of cast steel and vibration-reducing balance shafts.

This 5th generations Nissan Sentra engine started production in 2000, and has served its role quite well through the years, despite its share of mechanical glitches that have led to service bulletins and recall episodes.

Some owners have observed comparatively higher oil consumption as well as valve screws in the intake manifold becoming loose and leading to fluctuating idling or loss of power.

About the Author

Even as Nissan Sentra engine looks into the problems, owners of affected vehicles are being advised to check their oil as frequently as every 700 mi or 1,100 kilometers.

i'm looking to change the intake in my nissan sentra spec V?

i'm looking to change out the intake in my 07 sentra spec V, what's the difference between short ram and cold air? or is it the same thing? what would you recommend? what brand? and if you know an approximation on the cost that'd be great!

A short ram intake has the filter in the engine bay next to the engine. It's short and relatively easy to install. A cold air intake has a longer air tube and locates the filter lower and outside the engine compartment, usually behind the front bumper where it gets cool air before it has been warmed up by the engine compartment. I recently installed a short ram by Injen on my Accord with noticable results. The customer reviews were equal to those of the cold air version, so I figured the difference was negligible. Mine was $195. The K&N version ran about $290, but was convertable from either short ram or cold air because the pipes piece together to form either configuration.

Record-Breaking Contingency Fund Offered To SCCA Runoffs Participants
TOPEKA, September 2, 2010: Racers participating in the 2010 SCCA National Championship Runoffs® Presented by Subway at Road America, Sept. 20-26, will vie for their share of a pool of contingency awards worth $1.6 million.

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