Turbo Size Calculator
Calculate the optimal turbo size for your engine based on displacement, RPM, target boost, and other factors. Find the perfect turbo for your performance goals.
Step 1: Engine Details
Understanding Turbo Sizing
Proper turbo sizing is critical for achieving your performance goals. A turbo that’s too small will choke at high RPM, while one that’s too large will have excessive lag. This calculator helps find the optimal balance.
Step 2: Performance Goals
About Volumetric Efficiency
Volumetric efficiency measures how effectively an engine can move air through its cylinders. Modern engines typically range from 80-95% efficiency. Lower values are common for older or modified engines.
Turbo Sizing Results
Recommended Turbo Size
Turbo Size Comparison
| Turbo Model | Compressor Size | Max Airflow | Pressure Ratio | Typical Application |
|---|
Airflow vs Boost Pressure
Turbo Sizing Formula
Airflow = (Displacement × RPM × VE × PR) / 5660
This formula calculates the required airflow in CFM (cubic feet per minute) where PR is the pressure ratio (atmospheric pressure + boost pressure / atmospheric pressure). Actual turbo selection should consider additional factors like turbine housing, compressor maps, and application specifics.
Need Professional Turbo Tuning?
Connect with our turbocharging experts for custom turbo sizing, installation guidance, and professional tuning solutions for your specific application.
Get Professional Advice