RB26 Engine: Specifications and FAQs
rb 26 engine, The RB26 engine is a legendary inline-six engine produced by Nissan, known for its performance, durability, and tuning potential. It has been a cornerstone in Nissan’s performance car lineup, particularly with models like the Nissan Skyline GT-R. Over the years, the RB26 engine has earned a reputation for being one of the most popular choices for enthusiasts seeking high horsepower and reliability. This article will cover the specifications, features, and answer some frequently asked questions (FAQs) about the RB26 engine.
RB26 Engine Specifications
General Overview
- Engine Type: Inline-six, turbocharged
- Displacement: 2.6L (2568 cc)
- Bore x Stroke: 86.0 mm x 73.7 mm
- Compression Ratio: 8.5:1
- Fuel System: Multi-point fuel injection (MPFI)
- Configuration: DOHC (Dual Overhead Camshaft)
- Valves: 24 (4 valves per cylinder)
- Turbocharger: Single turbo (factory), upgradeable to twin or larger turbos
- Fuel Type: Gasoline
- Recommended Fuel: Premium unleaded
- Cooling System: Water-cooled
Performance Figures
- Power Output: 280 hp (208 kW) @ 6,800 rpm (Factory spec)
- Torque: 353 Nm (260 lb-ft) @ 4,400 rpm
- Redline: 8,000 rpm
- Engine Management: Electronic Control Unit (ECU)
Dimensions
- Length: 618 mm (24.3 inches)
- Width: 567 mm (22.3 inches)
- Height: 540 mm (21.3 inches)
- Weight: Approximately 175 kg (386 lbs)
Applications
The RB26 engine was first introduced in the Nissan Skyline GT-R models, specifically from the R32, R33, and R34 generations. It was also used in various Nissan models like the Nissan Stagea and Nissan Laurel. The RB26’s tuning capabilities made it a favorite in motorsports, particularly in drifting and racing.
Key Features of the RB26 Engine
1. Robust Bottom End
The RB26 features a strong iron block, which makes it ideal for high-performance builds. The forged steel crankshaft, forged pistons, and high-strength connecting rods allow the engine to withstand high levels of boost and power.
2. DOHC Design
With a dual overhead camshaft (DOHC) design, the RB26 engine is known for high RPM capabilities, efficient breathing, and superior performance at higher engine speeds. This design contributes to the engine’s durability and responsiveness.
3. Turbocharging
One of the defining features of the RB26 engine is its turbocharging. The engine comes with a single turbocharger from the factory, typically the Garrett T28 or T25 for the earlier R32 models. However, the RB26’s robust internals make it a great engine for performance upgrades, including larger turbos and twin-turbo setups.
4. Strong Tuning Potential
The RB26 engine has immense tuning potential. With modifications, it can easily reach over 1,000 horsepower for drag racing or street performance builds. The aftermarket support for the RB26 is massive, with parts available for everything from engine internals to turbo kits and ECU tuning.
RB26 Engine FAQ
1. What is the difference between the RB25 and RB26 engines?
The RB25 is a slightly smaller and less powerful version of the RB26. The primary differences include:
- Displacement: The RB25 has a 2.5L displacement, compared to the RB26’s 2.6L.
- Performance: The RB26 produces more horsepower and torque, making it more suitable for high-performance applications.
- Bottom End: The RB26 has a more robust bottom end, which is better suited for aftermarket modifications and higher power outputs.
2. Can the RB26 handle big power upgrades?
Yes, the RB26 is renowned for its ability to handle substantial power upgrades. With proper tuning, stronger engine internals, and appropriate cooling, the RB26 can easily support over 1,000 horsepower. Many tuners use the RB26 in drag racing and other motorsports due to its ability to handle extreme levels of boost and performance modifications.
3. What are some common upgrades for the RB26?
Popular upgrades for the RB26 engine include:
- Larger turbochargers (like the Garrett GT35R or GT40R)
- Forged pistons and rods for increased durability
- Aftermarket fuel injectors and pumps for higher fuel delivery
- Upgraded intercoolers for better cooling
- Standalone ECU systems for precise engine control
- Upgraded cylinder head (porting and valve upgrades)
4. What cars did the RB26 engine come in?
The RB26 engine was primarily found in the Nissan Skyline GT-R models, including the R32, R33, and R34. It was also used in the Nissan Stagea, Nissan Laurel, and some variants of the Nissan Cedric and Nissan Silvia.
5. How reliable is the RB26 engine?
The RB26 engine is generally considered very reliable when maintained properly. The engine’s bottom end is built to handle high-performance applications, but like any high-performance engine, it requires regular maintenance and proper tuning. Common issues include oil leaks, head gasket failure, and turbocharger wear, especially in higher-mileage engines.
6. Can I swap an RB26 into other cars?
Yes, many enthusiasts swap the RB26 engine into other cars, particularly in the Nissan 240SX (S13, S14), Mazda RX-7, and Toyota Chaser. However, swapping an RB26 requires significant modifications to the engine bay, transmission mounts, and custom ECU tuning. It is a complex swap that requires expert-level knowledge and fabrication.
7. What is the cost of an RB26 engine?
The price of an RB26 engine can vary significantly based on condition, mileage, and location. On average, a used RB26 engine can cost anywhere from $2,000 to $5,000 USD. However, fully rebuilt or performance-tuned RB26 engines can reach upwards of $10,000 or more.
Conclusion
The RB26 engine remains one of the most iconic engines in Nissan’s history, with its robust construction, performance potential, and enduring legacy in the automotive world. Whether you’re building a high-horsepower street car, a racing machine, or a drift car, the RB26 offers unparalleled tuning potential and a solid foundation for your performance goals. With the right maintenance and upgrades, the RB26 can continue to perform at high levels for many years to come.
