Tech Session – Understanding & Tuning SU Carburetors

🔧 Technical Session: Understanding & Tuning SU Carburetors

Club member Ken Quade will lead this session to provide a deep dive into the design, operation, and tuning of SU carburetors—an iconic component found in many classic British sports cars. Participants will gain both theoretical knowledge and practical insights into how these carburetors function and how to optimize their performance.

📘 What We’ll Cover

• Principles of Operation
  • How the variable venturi design works
  • The role of the piston, dashpot, and needle in fuel metering
  • Airflow dynamics and mixture control
• Hands-On Tuning Techniques
  • Adjusting the jet height and mixture for smooth running
  • Balancing multiple carburetors for synchronized performance
  • Diagnosing common issues such as rich/lean mixtures, hesitation, or uneven idle
• Practical Demonstrations

• Step-by-step tuning process using real examples
• Tips for maintaining reliability and efficiency
• Best practices for keeping SU carburetors in peak condition

🎯 Who Should Attend

Classic car enthusiasts, restorers, and anyone interested in the mechanical artistry of carburetion. Whether you’re new to SU carburetors or looking to refine your tuning skills, this session will equip you with the knowledge to get the most out of these elegant devices.