1. What is the Stall Speed Formula?

The Stall Speed formula calculates the optimal stall speed for a torque converter based on engine horsepower and a constant factor. This helps in choosing the right torque converter for your vehicle's performance needs.

2. How Does the Calculator Work?

The calculator uses the Stall Speed formula:

Where:

• \( Stall \) — Stall speed in rpm
• \( K \) — Constant factor (typically ranges from 20-30)
• \( HP \) — Engine horsepower

Explanation: The formula provides a mathematical relationship between engine power and the optimal stall speed for torque converter selection.

3. Importance of Stall Speed Calculation

Details: Proper stall speed selection is crucial for optimal vehicle performance, ensuring the torque converter matches the engine's power band for maximum acceleration and efficiency.

4. Using the Calculator

Tips: Enter engine horsepower and the appropriate constant factor K. Typical K values range from 20-30 depending on vehicle type and intended use.

5. Frequently Asked Questions (FAQ)

Q1: What is stall speed in a torque converter?
A: Stall speed is the maximum engine rpm that can be achieved with the transmission in gear and the vehicle prevented from moving.

Q2: How do I choose the right K value?
A: K values typically range from 20-30. Lower values (20-24) for street performance, higher values (25-30) for racing applications.

Q3: What happens if I choose the wrong stall speed?
A: Too low stall speed can cause sluggish acceleration, while too high stall speed can reduce fuel efficiency and cause excessive heat buildup.

Q4: Does this formula work for all vehicles?
A: This formula provides a good starting point for most rear-wheel drive performance vehicles, but may need adjustment for specific applications.

Q5: Should I consult a professional for torque converter selection?
A: While this calculator provides a good estimate, consulting with a transmission specialist is recommended for optimal performance.