Best Top B Series Swap Guide
The Honda B-Series engine family helped establish Honda's reputation in the performance world. Even decades after its introduction, the B-Series remains a favorite among enthusiasts due to its high-revving nature, VTEC technology, affordability, and strong aftermarket support.
Whether you're upgrading from a D-Series engine or restoring a classic Honda project, a B-Series swap can significantly improve performance while maintaining Honda reliability.
What Is a B-Series Swap?
A B-Series swap involves replacing a factory engine with a Honda B-Series engine.
Popular B-Series engines include:
- B16A
- B16B
- B18B
- B18C1
- B18C5
- B20B
- B20Z
These engines were originally found in:
- Honda Civic Si
- Honda Civic Type R
- Acura Integra
- Acura Integra GS-R
- Acura Integra Type R
- Honda CR-V
Why Choose a B-Series Swap?
Proven Honda Performance
The B-Series platform has been dominating Honda performance builds for decades.
VTEC Technology
Many B-Series engines feature Honda's famous VTEC system for strong top-end power.
Huge Aftermarket Support
Available upgrades include:
- Turbo kits
- Camshafts
- Cylinder heads
- Intake manifolds
- ECU solutions
- Transmission upgrades
Easy Installation
Many older Honda chassis were designed around the B-Series platform, making swaps relatively straightforward.
Best B-Series Engines for Swaps
B16A
One of the most iconic Honda engines.
Specifications:
- 1.6L DOHC VTEC
- Approximately 160 HP stock
Pros:
- High-revving performance
- Affordable
- Excellent aftermarket support
Ideal For:
- Street cars
- Budget builds
B18C1 (Integra GS-R)
A popular upgrade over the B16A.
Specifications:
- 1.8L DOHC VTEC
- Approximately 170 HP stock
Pros:
- Increased torque
- Strong VTEC performance
Ideal For:
- Daily drivers
- Street performance builds
B18C5 (Integra Type R)
Considered one of the greatest Honda engines ever produced.
Specifications:
- 1.8L DOHC VTEC
- Approximately 195 HP stock
Pros:
- Exceptional cylinder head
- High RPM capability
- Collector value
Ideal For:
- Naturally aspirated builds
- Performance enthusiasts
B20 VTEC (Frankenstein Build)
A popular combination using:
- B20 bottom end
- B16 or B18 VTEC head
Benefits:
- Increased displacement
- Excellent torque
- Strong horsepower potential
Ideal For:
- Street performance
- Naturally aspirated builds
Best Vehicles for a B-Series Swap
Honda Civic EF (1988-1991)
One of the most popular swap platforms.
Honda Civic EG (1992-1995)
Excellent aftermarket support and lightweight chassis.
Honda Civic EK (1996-2000)
Arguably the most common B-Series swap platform.
Honda CRX
A lightweight CRX with a B-Series engine delivers outstanding performance.
Acura Integra
Many owners upgrade non-VTEC Integras with B18C engines.
Essential Parts for a B-Series Swap
Engine Mount Kit
Swap mounts ensure proper engine placement.
Popular Brands:
- Hasport
- Innovative Mounts
Transmission
Recommended options include:
- B16 Transmission
- GS-R Transmission
- Type R Transmission
Axles
Depending on the chassis, custom or hybrid axles may be required.
Shift Linkage
Proper linkage ensures smooth shifting and transmission operation.
Wiring Harness
A conversion harness simplifies installation and ECU communication.
ECU and Engine Management
Proper engine management is critical.
Popular ECU Options:
- Hondata S300
- Chipped P28 ECU
- Standalone ECU systems
Benefits:
- Improved tuning control
- Better reliability
- Increased power potential
Turbocharging a B-Series Engine
One reason the B-Series remains popular is its turbo capability.
Stock Internal Builds
Typical Power Range:
- 250–350 WHP
Forged Internal Builds
Typical Power Range:
- 500–800+ WHP
Recommended Upgrades:
- Forged pistons
- Forged connecting rods
- ARP head studs
- Larger injectors
- Upgraded fuel pump
B-Series Transmission Options
B16 Transmission
Advantages:
- Close gear ratios
- Excellent acceleration
GS-R Transmission
Advantages:
- Good balance of acceleration and cruising
Type R Transmission
Advantages:
- Aggressive gearing
- Excellent track performance
Limited Slip Differential (LSD)
Highly recommended for improved traction and power delivery.
Estimated B-Series Swap Cost
| Component | Estimated Cost |
|---|---|
| Engine | $1,000–$5,000 |
| Transmission | $600–$2,000 |
| Mount Kit | $300–$800 |
| Wiring Harness | $200–$700 |
| ECU | $300–$1,500 |
| Axles | $300–$700 |
| Miscellaneous Parts | $500–$2,000 |
Budget Build
$3,000–$6,000
High-End Performance Build
$7,000–$15,000+
Common B-Series Swap Mistakes
Buying a Worn Engine
Before purchasing:
- Perform a compression test
- Check oil condition
- Inspect for leaks
- Verify engine codes
Poor Wiring
Bad wiring often leads to:
- Starting issues
- Sensor failures
- ECU communication problems
Skipping Maintenance
Before installation replace:
- Timing belt
- Water pump
- Seals
- Gaskets
Poor Tuning
A professional tune helps maximize:
- Horsepower
- Reliability
- Fuel efficiency
Best Supporting Upgrades
To maximize performance consider:
- Cold air intake
- Performance header
- High-flow exhaust
- Upgraded clutch
- Limited-slip differential
- Performance suspension
- Hondata tuning
B-Series vs K-Series
| Feature | B-Series | K-Series |
|---|---|---|
| Cost | Lower | Higher |
| Installation | Easier | More Complex |
| Aftermarket Support | Excellent | Excellent |
| Torque | Moderate | Higher |
| Turbo Potential | Excellent | Excellent |
| Availability | Becoming Rare | More Available |
While K-Series swaps are increasingly popular, B-Series engines remain an excellent choice for enthusiasts seeking classic Honda performance.
Final Thoughts
A B-Series swap remains one of the best upgrades for older Honda platforms. Whether you're building a high-revving naturally aspirated Civic, a turbocharged street machine, or a weekend track car, the B-Series offers proven reliability, excellent aftermarket support, and impressive performance potential.
With proper planning, quality components, and professional tuning, a B-Series swapped Honda can provide years of reliable performance while preserving the legendary Honda driving experience.