The Nissan QR20DE is an inline 2.0 liter (1,998 cc, 121.92 cu in) four-cylinder, four-stroke cycle gasoline engine from Nissan QR-family.
The QR20DE engine has an aluminum block and cylinder head, dual overhead camshaft (DOHC), four-valve designs with continuously variable valve timing (CVTC) on the intake camshaft, individual ignition coils, electronic throttle, and multi-point fuel injection system.
An 89.0 mm (3.504 in) cylinder bore and 80.3 mm (3.161 in) piston stroke give the engine a total of 2.0 L of displacement. Compression ratio rating is 9.9:1.
The Nissan QR20DE produced from 96 kW (130 PS, 128 HP) at 5,600 rpm to 110 kW (150 PS, 147 HP) at 6,000 rpm of horsepower and from 178 N·m (131 lb·ft) at 4,400 rpm to 200 N·m (148 lb·ft) at 4,000 rpm of torque.
The breakdown of the engine code is as follows:
- QR – Engine Family
- 20 – 2.0 Liter Displacement
- D – DOHC (Dual Overhead Camshafts)
- E – Multi Point Fuel Injection
General information
| Engine Specifications | |
| Engine code | QR20DE |
| Layout | Four stroke, Inline-4 (Straight-4) |
| Fuel type | Gasoline |
| Production | 2000- |
| Displacement | 2.0 L, 1,998 cc (121.92 cu in) |
| Fuel system | Multi Point Fuel Injection |
| Power adder | None |
| Power output | 96 kW (130 PS, 128 HP) at 6,000 rpm 100 kW (136 PS, 134 HP) at 6,000 rpm 103 kW (140 PS, 138 HP) at 5,800 rpm 103 kW (140 PS, 138 HP) at 6,000 rpm 108 kW (147 PS, 145 HP) at 6,000 rpm 110 kW (150 PS, 148 HP) at 6,000 rpm |
| Torque output | 178 N·m (131 lb·ft) at 4,400 rpm 192 N·m (142 lb·ft) at 4,000 rpm 198 N·m (146 lb·ft) at 4,000 rpm 200 N·m (148 lb·ft) at 4,000 rpm |
| Firing order | 1-3-4-2 |
| Dimensions (L x H x W): | – |
| Weight | 330 lbs (150 kg) |
Cylinder block
The QR20DE has an aluminium block, cylinder bore is 89.0 mm (3.504 in) and piston stroke is 80.3 mm (3.161 in), compression ratio is 9.9:1.
The pistons are each fitted with two compression rings and a single oil ring, connecting rods are 153 mm long. The crankshaft for the QR20DE engine has two balancer shafts and supported by five main bearings.
| Cylinder block | ||
| Cylinder block alloy | Aluminium | |
| Compression ratio: | 9.9:1 | |
| Cylinder bore: | 89.0 mm (3.504 in) | |
| Piston stroke: | 80.3 mm (3.161 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Number of main bearings: | 5 | |
| Block Height: | – | |
| Cylinder inner diameter (standard): | 89.010-89.020 mm (3.5043-3.5047 in) | |
| Piston skirt diameter (standard): | 88.990-89.000 mm (3.5035-3.5039 in) | |
| Piston pin outer diameter: | 19.989-19.995 mm (0.7870-0.7872 in) | |
| Piston ring side clearance: | Top | 0.045-0.080 mm (0.0018-0.0031 in) |
| Second | 0.030-0.070 mm (0.0012-0.0028 in) | |
| Oil | 0.065-0.135 mm (0.0026-0.0053 in) | |
| Piston ring end gap: | Top | 0.21-0.31 mm (0.0083-0.0122 in) |
| Second | 0.32-0.47 mm (0.0126-0.0185 in) | |
| Oil | 0.20-0.60 mm (0.0080-0.0240 in) | |
| Connecting rod center distance: | 152.85-152.95 mm (6.018-6.022 in) | |
| Connectin rod small end inner diameter: | 20.000 mm (0.7874 in) | |
| Connectin rod big end inner diameter: | 48.000 mm (1.8898 in) | |
| Crankshaft journal diameter: | 54.979-54.978 mm (2.1645-2.1645 in) | |
| Crankpin diameter: | 44.974-44.973 mm (1.7706-1.7706 in) | |
Lower cylinder block tightening procedure and torque specs:
- M8 bolts: 25.1 Nm; 2.6 kg·m; 19 ft·lb
- M10 bolts: 39.2 Nm; 4.0 kg·m; 29 ft·lb
Connecting rods torque:
- Step 1: 19.6 Nm; 2.0 kg·m; 14 ft·lb
Cylinder head
The engine has an aluminum cylinder head with two chain-driven overhead camshafts and variable valve timing (CVTC) on the intake camshaft. Intake valves are 35 mm in diameter, intake duration is 236 °, and the exhaust valves are 30 mm, exhaust duration is 212 °. The QR20DE does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance.
| Cylinder head | ||
| Cylinder head alloy | Aluminum | |
| Cylinder head height: | – | |
| Valve Arrangement: | DOHC, chain drive | |
| Valves: | 16 (4 valves per cylinder) | |
| Intake/Exhaust duration: | 236/212 ° | |
| Valve head diameter: | INTAKE | 35.5-35.8 mm (1.398-1.409 in) |
| EXHAUST | 30.5-30.8 mm (1.201-1.213 in) | |
| Valve length: | INTAKE | 97.16 mm (3.8252 in) |
| EXHAUST | 98.82 mm (3.8905 in) | |
| Valve stem diameter: | INTAKE | 5.965-5.980 mm (0.2348-0.2354 in) |
| EXHAUST | 5.955-5.970 mm (0.2344-0.2350 in) | Cam height: | INTAKE | 45.015-45.205 mm (1.7722-1.7797 in) |
| EXHAUST | 42.825-43.015 mm (1.6860-1.6935 in) | |
| Outer camshaft journal diameter: | №1 | 27.935-27.955 mm (1.0998-1.1006 in) |
| №2-5 | 23.435-23.455 mm (0.9226-0.9234 in) | |
Head tightening procedure and torque specs:
- Step 1: 50.0 Nm; 5.1 kg·m; 37 ft·lb
- Step 2: Turn all bolts 60° clockwise
- Step 3: Loosen all bolts completely
- Step 4: 39.2 Nm; 4.0 kg·m; 29 ft·lb
- Step 5: Turn all bolts 75°
- Step 6: Turn all bolts 75° again
Camshaft brackets bolts procedure and torque specs:
- Step 1: 2.0 Nm; 0.2 kg·m; 1 ft·lb
- Step 2: 5.9 Nm; 0.6 kg·m; 4 ft·lb
- Step 3: 10.4 Nm; 1.1 kg·m; 8 ft·lb
Problems and malfunctions
The service life of the QR20DE engine is about 120,000 miles of mileage (200,000 km). The valve clearance needs to be adjusted every 60,000 miles of mileage (90,000 km).
Frequent problems and malfunctions:
- Oil leaks from under the cylinder head cover. That problem fixes by installing the new gasket.
- Idle problems, jerking. The problem in the stretched timing chain. It often happens on the first generation of the engines. A new timing chain will allow you to forget about any issues related to bad timing chain.
- The QR20DE motor is difficult to start in the cold weather. (below -20° C)
- If the engine was produced till 2004, the catalyst is not long-life part.
- The thermostat is not an example of reliability and you can easily to overheat aluminum cylinder block.
- High oil consumption. If your oil consumption exceeds 1 qt. per 1500 miles (0,5L per 1000 km), then the piston rings and valve oil seals need to be replaced.
Maintenance data
| Valve clearance (HOT) | |
| Intake valve | 0.304-0.416 mm (0.012-0.016 in) |
| Exhaust valve | 0.308-0.432 mm (0.012-0.017 in) |
| Compression pressure | |
| Standard | 12.1 kg/cm2 (11.9 bar, 173 psi) / 250 rpm |
| Minimun | 10.1 kg/cm2 (9.9 bar, 144 psi) / 250 rpm |
| Compression differential limit between cylinders | 1 kg/cm2 (0.98 bar, 14 psi) / 250 rpm |
| Oil system | |
| Oil consumption , L/1000 km (qt. per miles) | up to 0.5 (1 qt. per 1200 miles) |
| Recommended engine oil | 5W-20 5W-30 10W-30 10W-40 |
| Oil type API | API: SG, SH, SJ, SL ILSAC: GF-1, GF-2, GF-3 |
| Engine oil capacity (Refill capacity) | With filter change 3.9 l (4.1 qt.) Without filter change 3.7 l (3.9 qt.) |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Oil Pressure, kPa (bar, kg/cm 2, psi) | Idle speed: More than 98 (0.98, 1.0, 14) 2,000 rpm: More than 294 (2.94, 3.0, 43) |
| Ignition system | |
| Spark plug | Standard: PLFR5A-11 (NGK, Platinum type) Cold: PLFR6A-11 (NGK, Platinum type) Hot: PLFR4A-11 (NGK, Platinum type) |
| Spark plug gap | 1.1 mm (0.043 in) |
| Spark plug torque | 24.5 N·m (2.5 kg·m; 18 lb·ft) |
Valve clearance adjustment data
Calculate the thickness of new adjusting valve lifter so valve clearance comes within specified values.
R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance
Intake:
N = R + [M – 0.28 mm (0.011 in)]
Exhaust:
N = R + [M – 0.30 mm (0.012 in)]
Valve lifters are available in 26 sizes from 6.96 mm (0.2740 in) to 7.46 mm (0.2937 in), in steps of 0.02 mm (0.0008 in).
Example (intake valve):
R = 7.10 mm
M = 0.36 mm
N = 7.10 + (0.36 – 0.28) = 7.18 mm, so we need a valve lifter with code 718.
| For adjusting | For checking | |
| Cold | Hot | |
| Intake | 0.24 – 0.32 mm (0.009 – 0.013 in) | 0.304 – 0.416 mm (0.012 – 0.016 in) |
| Exhaust | 0.26 – 0.34 mm (0.010 – 0.013 in) | 0.308 – 0.432 mm (0.012 – 0.017 in) |
Whenever valve clearances are adjusted to cold specifications, check that the clearances satisfy hot specifications and adjust again if necessary.
Vehicle applications
| Model | Years Produced |
| Nissan X-Trail T30 | 2001-2007 |
| Nissan Primera P12 | 2001-2007 |
| Nissan Serena C24 | 2002– |
| Nissan Teana J31 | 2003-2008 |
| Nissan Wingroad Y11 | 2001-2005 |
| Nissan Avenir W11 | 2002-2005 |
| Nissan Prairie / Liberty M12 | 2001-2004 |
| Nissan Caravan E25 | 2007-2010 |
| Nissan NV350 Caravan E26 | – |
Author:
Good day
I need to find out if the 2.0 QR engine block is the same at the 2.0 DE
I have a qr20d, now my question is;can I put a qr25de head gasket in my qr20d?
Yes, both engines are equipped with the same gasket (Part number: 11044-6N202).
My engine number is QR20 (DE) and i want to know if i can use the QR25 DE cylinder head casket on my QR20 DE engine.
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Also if that is possible, do i need to change my ecu as well ?
Nissan Serena failing ignection system what will be the problem please assit
Merhaba nissan x trail t30 kullanıyorum açıklamanız da 2004 e kadar olan modellerde katalizör problem mi ve nasıl önlem alınır ewet araç Kendini bıktırdı benden malesef bir öneriniz var mı tşkler.
lpgli ise yapacak bir şey yok. bendede aynı motora sahip p12 var . katalizörün içini tamamen boşalttım. arıza lambalarının önüne geçebilmek için lambda sensörünün arasına takılan ufak aparatlar var yanıltıyor. ben deneyeceğim sizde bir araştırın
Hey admin,I have a Nissan primers 2003,Can I change Engine with any QR20 SERIES OF 2010.
THANKS
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Hi my dad’s car cannot reverse but it can still drive Forward l and he was told he needed to replace his gearbox qr 20 DE 1998. What seems to be the reason for this problem and does he need to replace the gearbox? Where can we find it?? Please help (Nissan Serena)
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Please I need torque specifications or table for the engine..
Cyl.hd bolt,camshaft,conrod brg cap bolt,main BRG etc..
Add some info in the article
so whats the main bearing torque?
I have a nv350 i live in Kingston Jamaica. should i use the cold or hot plugs or just replace it with a standard plug.
Thanks for the knowledge
Hi, My engine is QR20DE. Does is matter if my spark plug length is long or short ie 19mm or 26mm. Which one best fits this engine since the NGK PLFR5A-11 Spark plug either comes 19mm pr 26mm. Thanks
What are the causes of engine over heat for Nissan x trail qr20 t30
I have been changing my QR20 3L engine head gasket for the 4the time now. What’s the real fault into this problem?
Válvula PVC
Hi admin I have xtrail qr20.with sometimes fail to burn fuel and showing the check online sign.WHAT COULD BE THE PROBLEM?
Iam looking for a QR20 Head, how can I find it?
I am looking for a used Nissan liberty engine.Chasis number RM12-005909.Model number TDAARDVM12DE76.Engine number QR20(DE) 1998.
Hi admin, I have a serena qr20de engine 2003. Need an automatic transmission. Will nissan primera’s gear box fit? Is it same. Is there any other gearbox that will fit the serena? Serena gearbox not available in my country
Hi what is the QR20DE 2.0L engine alternator belt Number
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What is the average operating temperature of the QR20 engine? On my Nissan X-Trail, l have to top up the radiator coolant every now but the radiator doesn’t leak.
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very informative. I have been able to know the type of sparkplugs for my car
Good day. I have a Nissan X Trail 2011 NT30 2.0L QR20 DE engine doung approximately 285,000 kilometers. What transmission oil do you recommend. I currently use Mobil1 5W50 engine oil. Is that ok in your opinion. I live in the Caribbean where at times it’s very hot and I am subjected to lots of traffic at times. Thank you.