1. What is a Racing Torque Converter Calculator?

The Racing Torque Converter Calculator helps select the optimal torque converter size for racing applications based on stall torque ratio and vehicle weight. Proper converter selection is crucial for maximizing launch performance and overall racing efficiency.

2. How Does the Calculator Work?

The calculator uses empirical racing formulas:

Where:

• \( Base Size \) — Starting converter size (8.0 inches)
• \( Stall Torque Ratio \) — Torque multiplication ratio at stall
• \( Vehicle Weight \) — Total vehicle weight in pounds

Explanation: The formula accounts for the relationship between torque multiplication needs and vehicle mass to determine optimal converter diameter.

3. Importance of Proper Converter Selection

Details: Correct torque converter sizing is essential for optimal launch characteristics, efficient power transfer, and preventing transmission damage in racing applications.

4. Using the Calculator

Tips: Enter stall torque ratio (typically 1.5-3.5 for racing) and vehicle weight in pounds. The calculator will recommend an appropriate converter size in inches.

5. Frequently Asked Questions (FAQ)

Q1: What is stall torque ratio?
A: The torque multiplication factor when the converter is at stall speed (input rotating, output stationary).

Q2: Why does vehicle weight affect converter size?
A: Heavier vehicles require more torque multiplication to achieve optimal launch, typically needing larger converters.

Q3: What are typical racing converter sizes?
A: Racing converters typically range from 8-12 inches, with smaller diameters providing higher stall speeds.

Q4: How does converter size affect performance?
A: Smaller converters provide higher stall speeds for better launches, while larger converters offer better efficiency at higher speeds.

Q5: Should I consider engine torque in selection?
A: Yes, engine torque characteristics should also be considered along with stall ratio and vehicle weight for optimal performance.