The QR family of straight-4 piston engines by
Nissan 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 and optional direct
injection.
The QR25DE is a 2.5 L (2488 cc) variant
built in Decherd, TN with forged steel connecting rods, a
steel timing chain, counter-rotating balance-shafts, and a
nylon intake manifold. The engine bore is 89 mm with a stroke
of 100 mm and a compression ratio of 9.5:1.[3] Output is rated
175 hp (130 kW) at 6000 rpm with 180 ft·lbf (244 Nm) of torque
at 4000 rpm in the Altima and Sentra SE-R Spec V models.
Altimas that are PZEV compliant create 170 hp and 175 ft·lbf
of torque. Engines in the Sentra SE-R model have 165 hp (123
kW) with 175 ft·lbf (237 Nm) of torque. [4] Most recently in
the 2005+ Nissan Frontier the QR25DE generates 154 hp and 173
ft·lbf of torque.[5]
More Nissan QR Engine
Info: Vehicle applications:
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