First Dyno Run: Air-Cooled 4-Valve Power

The Ultimate Stress Test. Part 4 takes the REEN 4-valve project to the engine dyno for its most critical validation yet. We’re not just chasing peak horsepower; we’re proving that air-cooled 3D-printed technology can handle the world’s toughest circuits. Watch the freshly printed cylinder heads endure a simulated full-throttle lap of Spa-Francorchamps. We’re pushing for GT3-level thermal stability and performance, capturing every data point from Eau Rouge to the Blanchimont straight. This is where engineering meets reality. What’s inside: • Simulated Lap: A full-load run of Spa-Francorchamps on the engine dyno. • Thermal Endurance: Can the 4-valve head stay cool under racing conditions? • The Data: Real-time performance curves. ___________________________________________________________________________________________________________________________ For this episode, we were guests at ‪@BovensiepenAutomobile‬ in Buchloe — a company with a strong legacy in the automotive industry. Formerly known as ALPINA, Bovensiepen is now especially active in the after-sales sector, providing the perfect environment for this decisive test. 👉 Subscribe on YouTube: / ‪@reengineered-classics‬ 👉 Follow & Subscribe on our Website: https://reencars.com/ 👉 Join us on Instagram: / reengineered_classics 🚀 Stay tuned for more exclusive content on performance, craftsmanship, and innovation! ___________________________________________________________________________________________________________________________ Many thanks to ‪‪@Hagerty‬ for providing the intro footage, ⁨‪@alte-schule‬ for the film footage of Spa Francorchamps and to ‪‪@MoritzStaudte‬ for filming and editing the video. Disclaimer: Legal Notice: REEN Classics GmbH ('REEN') is an independent company dedicated to the technical and aesthetic modernization of classic vehicles. REEN has no affiliation whatsoever with the manufacturers of the base vehicles used in the conversions or with their affiliated companies; unless otherwise stated, REEN is neither supported nor authorized by these companies. REEN carries out all restorations and conversions on its own responsibility. The manufacturer brands and model names mentioned are trademarks of their respective owners; they serve solely to identify the base vehicles and describe the respective vehicle solely in its original delivery condition. #reen #shorts #RSGT #aircooled