The problem in the stretched timing chain. That problem fixes by installing the new gasket. Oil leaks from under the cylinder head cover.The valve clearance needs to be adjusted every 60,000 miles of mileage (90,000 km). The service life of the QR20DE engine is about 120,000 miles of mileage (200,000 km). Head tightening procedure and torque specs:Ĭamshaft brackets bolts procedure and torque specs: The QR20DE does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance. Intake valves are 35 mm in diameter, intake duration is 236 °, and the exhaust valves are 30 mm, exhaust duration is 212 °. The engine has an aluminum cylinder head with two chain-driven overhead camshafts and variable valve timing (CVTC) on the intake camshaft. Lower cylinder block tightening procedure and torque specs: Number of piston rings (compression / oil): The crankshaft for the QR20DE engine has two balancer shafts and supported by five main bearings. The pistons are each fitted with two compression rings and a single oil ring, connecting rods are 153 mm long. 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. General information Engine Specifications The breakdown of the engine code is as follows: 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
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