Description

B swap

A B-Swap refers to the process of swapping a Honda B-series engine into a different vehicle, typically another Honda. The B-series engines are highly popular among Honda enthusiasts due to their balance of performance, reliability, and aftermarket support. Swapping a B-series engine into a vehicle that originally had a smaller, less powerful engine (such as a D-series) is a common modification to significantly improve performance.

Overview of the B-Swap:

A B-Swap involves replacing the stock engine (usually a lower-powered D-series or another economy engine) with a more powerful engine from Honda’s B-series lineup. The B-series engines were available in various Honda models from the late 1980s to the early 2000s, and many of them are known for their high-revving nature, VTEC technology, and aftermarket potential.

Popular B-Series Engines for Swaps:

1. B16A:
   • Displacement: 1.6L
   • Power: 150-160 horsepower
   • VTEC: Yes
   • Found in the Honda Civic SiR and Honda Integra SiR, this engine is highly sought after for its high-revving nature and impressive power output for its size.
2. B18C:
   • Displacement: 1.8L
   • Power: 170-200 horsepower (depending on the variant)
   • VTEC: Yes
   • Found in the Honda Integra Type R and Honda Civic Type R, this engine is one of the most desirable B-series engines. The B18C5, from the Integra Type R, is especially revered for its performance potential.
3. B18B:
   • Displacement: 1.8L
   • Power: Around 140-145 horsepower
   • VTEC: No
   • Found in models like the Acura Integra LS, this engine doesn’t have VTEC but is still a popular choice for turbo builds due to its solid, reliable block.
4. B20B/Z:
   • Displacement: 2.0L
   • Power: Around 126-146 horsepower
   • VTEC: No
   • Found in Honda CR-V models, this engine is often used for “Frankenstein” builds, where enthusiasts combine a B20 block with a VTEC-equipped B-series head (like the B16 or B18C), creating a high-displacement, high-power engine.

Why Perform a B-Swap?

1. Performance:
   • The primary reason for a B-swap is to increase power and performance. B-series engines are known for their ability to produce significant horsepower gains, especially with VTEC engines. For example, swapping a D-series engine for a B16A or B18C can result in a substantial power boost.
2. Aftermarket Support:
   • The B-series engine has one of the largest aftermarket communities, offering a wide range of parts including intake manifolds, turbo kits, exhaust systems, camshafts, pistons, and much more. This makes it easier to customize and upgrade the engine post-swap.
3. Reliability:
   • B-series engines are known for their reliability and durability, even when pushed hard. Enthusiasts value these engines because they can handle high RPMs, boosted applications, and modifications while maintaining long-term reliability.
4. VTEC Technology:
   • One of the biggest draws to the B-series engines, especially models like the B16A and B18C, is Honda’s VTEC (Variable Valve Timing and Lift Electronic Control) system. VTEC provides a balance between low-end torque and high-end power, making these engines versatile for both daily driving and high-performance scenarios.

Common Cars for B-Swaps:

1. Honda Civic (1992-2000):
   • The 5th and 6th generation Civics are the most popular platforms for B-swaps due to their lightweight chassis and aftermarket support.
   • Models like the EG (1992-1995) and EK (1996-2000) are common recipients of B-series engines.
2. Acura Integra (1994-2001):
   • Though some Integras already came with B-series engines, lower trim models like the LS often see B-swaps to upgrade to a higher-performance variant like the B18C1 (GSR) or B18C5 (Type R).
3. Honda CRX (1988-1991):
   • The CRX is another lightweight platform that benefits significantly from a B-series swap, turning it into a capable and fun performance vehicle.
4. Honda Del Sol (1992-1998):
   • The Honda Del Sol, based on the Civic chassis, is also a good candidate for a B-series swap, particularly models that came with the smaller D-series engines.

Components Needed for a B-Swap:

1. B-Series Engine: The core of the swap, chosen based on your performance goals (B16A, B18C, B20, etc.).
2. Transmission:
   • Ideally, a B-series transmission (such as the S80, Y21, or Y80) is used to match the engine, ensuring compatibility and performance.
3. ECU:
   • The ECU (Engine Control Unit) must be compatible with the B-series engine being swapped. In many cases, the P28 (Civic EX/Si) or P30 (Civic SiR) ECUs are used, often with modifications like chipping or custom tuning for optimal performance.
4. Motor Mounts:
   • You’ll need custom or aftermarket motor mounts designed for B-series swaps, as the factory mounts from the original engine won’t fit a B-series engine directly.
5. Shift Linkage:
   • B-series shift linkage is required for proper shifting functionality. The linkage from the stock engine is usually not compatible with the B-series transmission.
6. Axles:
   • Depending on the vehicle and engine combination, B-series axles may be needed to fit the new drivetrain setup.
7. Wiring Harness:
   • You’ll either need to modify the existing wiring harness or purchase a conversion harness to make the B-series engine’s electronics compatible with the car’s original system.
8. Exhaust System:
   • The stock exhaust manifold and piping may not fit the new engine, so modifications or aftermarket parts are often required.
9. Radiator and Cooling:
   • Cooling system modifications may be necessary to ensure proper engine cooling, especially if upgrading from a smaller engine. Some swaps require a larger radiator or different hoses.