Nissan SR18DE Engine
|Also called||Nissan SR18|
|Cylinder block alloy||Aluminum|
4 valves per cylinder
|Piston stroke, mm (inch)||86 (3.39)|
|Cylinder bore, mm (inch)||82.5 (3.25)|
|Displacement||1838 cc (112.1 cu in)|
|Power output||81 kW (110 HP) at 6,000 rpm
92 kW (125 HP) at 6,000 rpm
103 kW (140 HP) at 6,400 rpm
|Torque output||156 Nm (115 lb·ft) at 4,000 rpm
156 Nm (115 lb·ft) at 4,800 rpm
167 Nm (123 lb·ft) at 4,800 rpm
|HP per liter||59.9
|Weight, kg (lbs)||–|
|Fuel consumption, L/100 km (mpg)
|Turbocharger|| Naturally aspirated
|Oil consumption, L/1000 km
(qt. per miles)
|up to 0.5
(1 qt. per 1200 miles)
|Recommended engine oil||5W-30
|Engine oil capacity, L (qt.)||3.4 (3.6)|
|Oil change interval, km (miles)||5,000-10,000
|Normal engine operating temperature, °C (F)||–|
|Engine lifespan, km (miles)
-No life span loss
|The engine is installed in||Nissan Primera
Along with the legendary 2.0L SR20, 1.8L SR18 was also produced by Nissan. In contrast to SR20DE, SR18DE has smaller piston diameter, 82.5 mm. Also inlet valves are 32 mm in diameter (while on SR20 their diameter is 34 mm), and the exhaust valves are 28 mm (on SR20 their diameter is 30 mm). Camshafts on SR18DE have duration 251/247 deg, lift 10.0/9.2 mm. Also another ECU is applied here. And as for the rest, it is the same as SR20DE.
SR18DE engine used multi point fuel injection system.
Besides this variant, SR18Di was produced also. It used single point fuel injection system and modified head. This engine is the diminished similarity to SR20Di.
Nissan SR18DE is equipped with hydraulic lifters, so you do not have regulating valves. Timing chain on this engine is quite reliable and may serve 150,000 miles of mileage (200,000-250,000 km) or sometimes even more.
The engine was produced till 2001, and then it was replaced with the new, QG18DE.
Nissan SR18DE engine problems and malfunctions
This engine is as reliable and durable as SR20DE. It does not have any serious problems or faults. Sometimes problems of idle air control valve or MAF sensor may happen, and as for the rest, it is perfect. Just use quality gasoline and motor oil, and your SR18DE will serve more than 250,000 miles of mileage (400,000 km).
Perhaps you wonder how to install turbo kit on SR18DE, don’t you? Do not be in hurry to waste your money. Better buy SR20DET and make swap. This turbocharged engine is much more powerful and efficient, while its price is not that high. You will gain 200 HP at once, and after light tuning even 300 horsepower.