Nissan QR engine
Encyclopedia
Straight-4
The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....
piston engines by Nissan were introduced in 2000 and range from 2.0 L to 2.5 L in displacement. These motors are aluminum, dual overhead camshaft (DOHC), four-valve designs with variable valve timing
Variable valve timing
In internal combustion engines, variable valve timing , also known as Variable valve actuation , is a generalized term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine...
and optional direct injection.
QR20DE
The 2.0 L (1998 cc) QR20DE produces 147 hp (110 kW) and 148 ft·lbf (200 N·m) The bore is 89 mm with a stroke of 80.3 mm and a compression ratio of 9.9:1.http://www.sae.org/automag/globalvehicles/06-2001/ The QR20DE was replaced with the MR20DE.Vehicle applications:
- 2001-2007 Nissan X-TrailNissan X-TrailThe Nissan X-Trail is a compact crossover SUV produced by the Japanese automaker Nissan since 2001. It was one of Nissan's first crossover SUVs and was released about the same time as several other companies competing car-based compact SUVs including the Ford Escape and its Mazda Tribute sibling,...
T30 (140 hp) - 2001-2007 Nissan PrimeraNissan PrimeraThe Nissan Primera is a medium sized family car produced by the Japanese automaker Nissan for the Japanese domestic and European markets.-Nissan Primera P10 :...
P12 - 2002-present Nissan SerenaNissan SerenaThe Nissan Serena started life as a very small people carrier, but grew larger with each generation over the years. Earlier versions were FR layout with a live axle mounted on leaf springs. Later versions had a multilink independent rear suspension, and were FF layout or 4WD...
C24, 145 hp (108 kW) - 2003-2008 Nissan TeanaNissan TeanaThe Nissan Teana is a luxury mid-size car produced by Nissan of Japan, introduced in 2003. It is exported as the Nissan Maxima and Nissan Cefiro to certain markets, not to be confused with the Nissan Maxima sold in North America with which it shares a platform .It is also exported to Mauritius as...
J31, 145 hp (108 kW) - 2001-2005 Nissan WingroadNissan WingroadThe Nissan Wingroad is an automobile available only as a compact station wagon. The Wingroad is sold as a different name when manufactured as a commercial delivery van, called the Nissan AD van, or as it's known as the...
Y11 - 2002-2005 Nissan AvenirNissan AvenirThe Nissan Avenir is a line of station wagons beginning production in May 1990 by Nissan of Japan, with the budget minded delivery van starting out as the Avenir Cargo, then being renamed in 1999 as the ' aimed primarily at the commercial market. It replaced the long-serving Nissan Bluebird...
W11 - 2001-2004 Nissan PrairieNissan PrairieThe second generation of the Prairie was introduced September 1988, and it was renamed the Nissan Axxess when sold in North America. The vehicle sold for six years in Canada, and in 1990 only in the United States....
M12
QR20DD
The QR20DD is similar to the QR20DE but features NEO direct injection to improve fuel economy and to reduce emissions.http://www.nissan-global.com/GCC/Japan/NEWS/20000727_0e.html It produces 150 hp.Vehicle applications:
- 2000-2004 Nissan Bluebird SylphyNissan Bluebird SylphyThe Nissan Bluebird Sylphy is a compact car made by Nissan The first Bluebird Sylphy is the Pulsar 4-door sedan which sold in the Japanese domestic market only in order to keep the Bluebird name alive, due to the car's traditional competitor the Toyota Corona...
QR25DE
The QR25DE is a 2.5 L (2488 cc) variant built in Decherd, TN with cast steel connecting rods, a steel timing chain, counter-rotating balance-shafts, and an aluminum intake manifold. The engine bore is 89 mm with a stroke of 100 mm and a compression ratio of 9.5:1.http://www.nissannews.com/nissan/2006vehicles/altima/specs.shtmlOutput is rated 175 hp (130 kW) at 6000 rpm with 180 ft·lbf (244 N·m) of torque at 4000 rpm in the Altima 2.5 and Sentra SE-R models. Altimas that are PZEV compliant create 170 hp and 175 ft.lbf of torque.http://www.nissannews.com/nissan/2006vehicles/sentra/specs.shtml In the 2005+ Nissan Frontier the QR25DE generates 154 hp and 173 ft.lbf of torque.http://www.nissannews.com/nissan/2006vehicles/frontier/specs.shtml More recently, in the Nissan SE-R Spec V 2007+ the QR25DE generates 200 hp @ 6600 rpm and 180 ft.lbf of torque @ 5200 rpm with a 7000 rpm redline. The crankshaft comes fully balanced allowing removal of the counter-shafts built into the older style QR25. The newer version is also equipped with a composite intake manifold and compression has been bumped up to 10.5:1http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=119877
Vehicle applications:
- 2002-2006 Nissan SentraNissan SentraThe Nissan Sentra is a compact car produced by automaker Nissan Motors and is generally a rebadged export version of the Japanese Nissan Sunny. The name "Sentra" is not used in Japan....
SE-R 165hp & SE-R Spec V 175hp - 2007-present Nissan SentraNissan SentraThe Nissan Sentra is a compact car produced by automaker Nissan Motors and is generally a rebadged export version of the Japanese Nissan Sunny. The name "Sentra" is not used in Japan....
SE-R 175hp & SE-R Spec V 200hp - 2002-present Nissan AltimaNissan AltimaThe Nissan Altima is a mid-size automobile manufactured by Nissan, and is arguably a continuation of the Nissan Bluebird line, which began in 1957. It has historically been larger, more powerful, and more luxurious than the Nissan Sentra but less so than the Nissan Maxima. The Altima is available...
2.5, 2.5S, 2.5SL 175hp, Hybrid 158hp - 2001-present Nissan SerenaNissan SerenaThe Nissan Serena started life as a very small people carrier, but grew larger with each generation over the years. Earlier versions were FR layout with a live axle mounted on leaf springs. Later versions had a multilink independent rear suspension, and were FF layout or 4WD...
C24, 158 hp (118 kW) - 1999-2003 Nissan BassaraNissan BassaraThe N30 Bassara was a MPV manufactured from November 1999 to June 2003 at Nissan's production facility in Tochigi, with the second generation at the Kyushu plant. The name is derived from the Sanskrit word "Vajara", which means "the prize or object of desire that encourages someone to yield to...
- 2001-2007 Nissan X-TrailNissan X-TrailThe Nissan X-Trail is a compact crossover SUV produced by the Japanese automaker Nissan since 2001. It was one of Nissan's first crossover SUVs and was released about the same time as several other companies competing car-based compact SUVs including the Ford Escape and its Mazda Tribute sibling,...
T30 APEC export version, 178 hp (133 kW) - 2005-present Nissan FrontierNissan FrontierNissan Navara is the name for the D22 and D40 generations of Nissan pickup trucks sold in Asia while in the North, Central and South America and the Philippines it is sold as Nissan Frontier. The line was started in 1998, and its immediate predecessor is the D21 Nissan Hardbody truck...
King Cab XE 4x2 154hp - 2003-2005 Nissan TeanaNissan TeanaThe Nissan Teana is a luxury mid-size car produced by Nissan of Japan, introduced in 2003. It is exported as the Nissan Maxima and Nissan Cefiro to certain markets, not to be confused with the Nissan Maxima sold in North America with which it shares a platform .It is also exported to Mauritius as...
160 hp and 240 nmNewton metreA newton metre is a unit of torque in the SI system. The symbolic form is N m or N·m, and sometimes hyphenated newton-metre... - 2008-present Nissan RogueNissan RogueThe Nissan Rogue is a compact crossover SUV that debuted in October 2007 for the 2008 model year, produced by the Japanese automaker Nissan. It is the North American counterpart of the X-Trail sold outside North America , as well as the Qashqai in Europe and the Dualis in Japan and Australia.The...
170 hp - 2007-present Nissan X-TrailNissan X-TrailThe Nissan X-Trail is a compact crossover SUV produced by the Japanese automaker Nissan since 2001. It was one of Nissan's first crossover SUVs and was released about the same time as several other companies competing car-based compact SUVs including the Ford Escape and its Mazda Tribute sibling,...
T31 169 hp - 2009-present Suzuki EquatorSuzuki EquatorThe Suzuki Equator is a mid-size pickup truck based on the Nissan Frontier and assembled by Nissan. The Suzuki Equator is first sold in the US for the 2009 model year with MSRP prices starting at $17,220, and was first shown at the 2008 Chicago Auto Show....
Extended Cab 4x2 152hp - 2002-2009 Nissan PresageNissan presageThe first generation Presage was launched by Nissan in June 1998 as a competitor to the Honda Odyssey and Toyota Estima. It was available with either seven or nine seats...
Manufacturing, design, and assembly flaws
The QR25DE sold in the United States has been subject to a significant number of problems in its lifetime. A variety of mechanical flaws have led to numerous technical service bulletins, recalls, repairs, and outright engine replacements.- Vehicles with the QR25DE may ingest material from a damaged pre-catalyst resulting in increased oil consumption.http://www.nissan-techinfo.com/nissan/TSB/TSB_xml/nmabstract.asp?mscssid=&VdocID=54354&phydoc=Y&FileName=1\R\F\1RF28.PDF&VRefNo=NTB03070
- Power valve screws in the intake manifold may become loose and result in unstable idling or power loss.http://www.nissan-techinfo.com/nissan/TSB/TSB_xml/nmabstract.asp?mscssid=&VdocID=54792&phydoc=Y&FileName=1\R\Q\1RQ26.PDF&VRefNo=NTB05058
- In June 2006, it came to Nissan's attention that approximately 85,000 Altimas and 2,000 Sentra SE-Rs equipped with the QR25DE and built between January and May 2006 may experience unusually high oil consumption. This can lead to premature engine failure and possibly a fire. While Nissan investigates the problem, owners of the affected vehicles are being advised to check their oil frequently (every 700 mi (1,126.5 km) [1127 km]), and dealers have been instructed to place the affected vehicles on sales hold.http://www.nissanhelp.com/Ownership/Bulletins/Nissan/2006/NTB06-045.htm
- The revised QR25DE found in the 2007+ Sentras, Altimas, etc. may have the above issues fixed.
2007+ QR25DE
The revised QR25DE found in the 2007+ Sentra, Altima, Rogue, etc. has a number of improvements over the older QR25DE. These include:- A simpler, larger diameter single path resin intake manifold replaced the old dual path design. No more troublesome butterfly valves. (Note: California emissions models do have a swirl control valve located in the intake)
- Revised piston crown shape to support a higher compression ratio of 9.6:1.(10.5:1 in Sentra SE-R Spec V.)
- The balancer system has been moved back slightly from the crank pulley to a more central location in the block. This also means JWT's balance shaft removal kit for the 1st gen QR will not work.
- Revised cam shaft profile.
- Reinforced connecting rods.
- Reduced friction likely through Nissan's extensive use of coatings on pistons, journal bearings, etc.
- Additional engine mount on the top of the motor, pulley side.
- Oil consumption issue resolved from older QR25DE.
- Higher rev limit and improved power output.
QR25DD
The QR25DD is similar to the QR25DE but increases the compression ratio to 10.5:1 and includes direct injection. It produces 170 hp (125 kW) and 181 ft·lbf (245 N·m).http://www.sae.org/automag/globalvehicles/06-2001/Vehicle applications:
- 2002-2006 Nissan PrimeraNissan PrimeraThe Nissan Primera is a medium sized family car produced by the Japanese automaker Nissan for the Japanese domestic and European markets.-Nissan Primera P10 :...
P12 (JDM)