First Dyno Run: Air-Cooled 4-Valve GT3 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.
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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.

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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 / Trademark Notice:
REEN is independent and not affiliated with Dr. Ing. h.c. F. Porsche AG, Porsche Deutschland GmbH, or Porsche Cars North America, Inc. All referenced trademarks/model names (e.g., “Porsche”, “911”, Porsche Crest®) are the property of their respective owners and are used for identification/reference only. No authorization or endorsement by Porsche.