To calculate the Supercharger RPM (SCRPM), multiply the crankshaft diameter by the engine RPM, divide by the supercharger pulley diameter, and then apply any specific ratios for your system.
The Supercharger RPM Calculator is an indispensable tool for car enthusiasts and mechanics looking to optimize engine performance. By accurately determining the RPM of a supercharger, you can ensure it operates within its intended range, maximizing boost efficiency and engine power.
Whether you’re upgrading pulleys, tweaking ratios, or troubleshooting performance issues, this calculator simplifies complex calculations for precise results.
Formula
SCRPM =
Variable | Description | Unit |
---|---|---|
SCRPM | Supercharger RPM | RPM |
CD | Crankshaft Pulley Diameter | Inches |
SCD | Supercharger Pulley Diameter | Inches |
ERPM | Engine RPM | RPM |
Solved Calculations
Example 1: Calculate the supercharger RPM for:
- Crankshaft Pulley Diameter (): 6 inches
- Supercharger Pulley Diameter (): 3 inches
- Engine RPM (): 6,000 RPM
Step | Calculation | Result |
---|---|---|
Calculate Ratio | 2 | |
Calculate Supercharger RPM | 12,000 RPM |
Example 2: Find the supercharger RPM with:
- Crankshaft Pulley Diameter (): 7 inches
- Supercharger Pulley Diameter (): 4 inches
- Engine RPM (): 5,500 RPM
Step | Calculation | Result |
---|---|---|
Calculate Ratio | 1.75 | |
Calculate Supercharger RPM | 9,625 RPM |