B-Series Motor

The B-Series engine family is a line of inline-four-cylinder engines from Honda, known for its performance and reliability. Introduced in the late 1980s and discontinued in the early 2000s, the B-Series engines became iconic among enthusiasts, particularly in the tuning and motorsports communities. These engines were used in a variety of Honda models, including the Civic, Integra, CR-X, and Del Sol, and are highly regarded for their potential for modification and high-revving nature.

Key Features of the B-Series Engine:

1. DOHC VTEC Technology:
   • Many B-Series engines, especially the high-performance variants, come equipped with Honda’s VTEC (Variable Valve Timing and Lift Electronic Control) technology. VTEC allows the engine to switch between two camshaft profiles, one optimized for low RPM fuel efficiency and the other for high RPM performance. This feature is a hallmark of Honda’s high-performance engines, allowing for better power delivery across the RPM range.
2. High-Revving Nature:
   • B-Series engines are known for their ability to rev high, often reaching redlines of 8,000 RPM or more, depending on the model. This makes them particularly well-suited for motorsport applications, where high-revving engines can produce more power and maintain it for longer periods.
3. Aluminum Block and Head:
   • The B-Series engines feature an aluminum block and cylinder head, which helps keep the engine lightweight while providing strong heat dissipation. This lightweight design is important for maintaining Honda’s focus on power-to-weight ratio, especially in performance models.
4. Dual Overhead Camshafts (DOHC):
   • The B-Series engines typically use DOHC configurations, meaning they have two camshafts per cylinder bank. This setup allows for better control of valve timing and lift, contributing to the engine’s high-revving capabilities and power output.

Popular B-Series Engine Variants:

1. B16A/B16B:
   • B16A: One of the most famous B-Series engines, the B16A was Honda’s first production engine to feature VTEC. It was found in cars like the Civic SiR and Civic VTi. The engine displaces 1.6 liters and produces around 160–170 hp depending on the variant and market.
   • B16B: Found in the EK9 Honda Civic Type R, the B16B is a high-performance version of the B16A with a higher compression ratio, more aggressive camshafts, and a power output of around 185 hp. It’s one of the most sought-after B-Series engines due to its rarity and performance.
2. B18C:
   • B18C1: Found in the Acura Integra GSR (GS-R), this 1.8-liter engine produces 170 hp and features VTEC. It’s a popular choice for engine swaps into lighter Honda chassis due to its balance of power and reliability.
   • B18C5: Found in the Acura Integra Type R, the B18C5 is the highest-performing B-Series engine, producing around 195 hp. It has an even higher compression ratio and more aggressive tuning than the B18C1, making it a popular choice for enthusiasts seeking maximum performance.
3. B20B/B20Z:
   • Found in the Honda CR-V, the B20 series displaces 2.0 liters and is a popular choice for enthusiasts looking to create “Frankenstein” engine builds, where a B20 bottom end is mated to a VTEC B16 or B18 head. This increases displacement and adds the high-revving characteristics of VTEC, making for a potent engine combination.
4. B17A1:
   • Found in the 1992-1993 Acura Integra GS-R, this engine displaces 1.7 liters and produces around 160 hp. It’s a relatively rare engine but is still popular in the tuning community for its performance and unique displacement.

Performance and Tuning Potential:

1. Engine Swaps:
   • One of the reasons the B-Series is so popular is its compatibility with many Honda chassis. Enthusiasts often swap B-Series engines into lighter, smaller cars like the Honda Civic (EG, EK, EF) for increased performance. The B-Series’ versatility in engine swaps has made it a staple in the tuning scene.
2. Aftermarket Support:
   • The B-Series has extensive aftermarket support, with parts ranging from intake manifolds, camshafts, pistons, and connecting rods to turbo kits, superchargers, and standalone engine management systems. Tuners can modify the B-Series to achieve significantly higher power outputs, making it a favorite for both street builds and track cars.
3. Turbocharging and Supercharging:
   • The B-Series engines are capable of handling forced induction (turbocharging or supercharging) with the appropriate internal upgrades. It’s common for turbocharged B-Series engines to produce upwards of 300–500 hp, depending on the build and setup.
4. Naturally Aspirated Builds:
   • For enthusiasts who prefer staying naturally aspirated, the B-Series can still produce impressive power. With high-compression pistons, aggressive camshafts, and proper tuning, it’s not uncommon to see naturally aspirated B-Series engines producing 220–250 hp at high RPMs.

Applications:

The B-Series engines have been used in various Honda models over the years, including:

• Honda Civic Si (EG, EK)
• Honda Civic Type R (EK9)
• Honda CR-X
• Acura Integra GS-R/Type R
• Honda CR-V (B20 series)
• Honda Del Sol

B-Series vs. K-Series:

While the K-Series engines that succeeded the B-Series are more advanced in terms of technology and performance, many enthusiasts still prefer the B-Series due to its simplicity, high-revving nature, and the vast aftermarket support it has garnered over decades. The B-Series is also often seen as easier to swap into older Honda chassis compared to the more complex K-Series.

Conclusion:

The Honda B-Series engines are legendary in the automotive world, especially among Honda enthusiasts. They offer a unique blend of high-revving fun, reliability, and vast tuning potential. Whether naturally aspirated or turbocharged, these engines can provide significant performance gains, and their legacy lives on in both street and motorsport applications. For those looking to build a high-performance Honda, the B-Series remains a top choice.