The Nissan RB25DET engine was found in the:
Nissan Skyline R33/R34 GTST
Nissan Stagea WC34
Nissan Cedric Y34
Nissan Gloria Y33 & Y34
Nissan Laurel C34 & C35
The Nissan RB25DET is a turbocharged inline six-cylinder engine produced by Nissan for use in their Skyline GT-R and other performance-oriented vehicles. The engine was first introduced in 1991 and continued production until 2002, and is highly regarded by car enthusiasts for its durability and performance capabilities.
At the heart of the RB25DET is its inline-six configuration, which provides smooth power delivery and an unmistakable exhaust note. The engine's cylinder block and head are both made of cast iron, ensuring robustness and longevity. The RB25DET's displacement is 2.5 liters, hence its name. It features dual overhead camshafts (DOHC) and 24 valves, with a compression ratio of 8.5:1.
One of the key features of the RB25DET is its turbocharging system. The engine utilizes a single turbocharger, which is mounted to the exhaust manifold and provides boost pressure to the engine's intake. The turbocharger is a ball-bearing unit, which provides improved spool-up times and reduced lag compared to other turbochargers.
The RB25DET's turbocharger is capable of producing up to 14.5 psi of boost pressure, and when combined with the engine's high-flowing cylinder head and fuel injection system, can produce up to 250 horsepower and 220 lb-ft of torque in stock form. However, with modifications such as a larger turbocharger, aftermarket fuel injectors, and upgraded engine management, the RB25DET can produce significantly more power.
Another notable feature of the RB25DET is its oiling system. The engine utilizes a dual oil pump setup, with one pump responsible for supplying oil to the engine's rotating assembly, and the other pump responsible for supplying oil to the cylinder head and turbocharger. This ensures proper lubrication to all parts of the engine, even at high RPMs and boost levels.
The RB25DET also features a robust bottom end, with a forged steel crankshaft and connecting rods, as well as hypereutectic pistons. These components can handle high levels of boost and power without issue, and can withstand abuse from performance driving and racing.
In addition to its performance capabilities, the RB25DET is also known for its ease of modification and aftermarket support. There are numerous aftermarket companies that produce performance parts for the RB25DET, including turbochargers, intake and exhaust systems, engine management systems, and more. This makes it a popular choice for car enthusiasts looking to build a high-powered and reliable engine.
Overall, the Nissan RB25DET is a highly capable and durable engine that has become a favorite among car enthusiasts and racers alike. Its smooth power delivery, robust bottom end, and turbocharging capabilities make it a formidable performer, while its ease of modification and aftermarket support make it a popular choice for those looking to build a high-performance engine.
Displacement: 2.5 liters (2,498 cc)
Bore x Stroke: 86mm x 71.7mm
Compression Ratio: 8.5:1
Valvetrain: Dual overhead camshafts (DOHC), 4 valves per cylinder (24 valves in total)
Turbocharger: Single turbocharger, ball-bearing unit
Maximum Boost Pressure: 14.5 psi (1 bar)
Power Output: 250 horsepower at 6,400 rpm (stock)
Torque Output: 220 lb-ft at 4,800 rpm (stock)
Bottom End: Forged steel crankshaft and connecting rods, hypereutectic pistons
Oiling System: Dual oil pump setup (one pump for the rotating assembly, one pump for the cylinder head and turbocharger)
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