Type 1-2-3-4, Porsche 356 and 911 Aircooled Cylinder Heads.
DRD Has over 30 years of experience with aircooled cylinder heads. We have done all the research and real life testing, to deliver the best product available in the industry. We use modern CAD CAM technology to design our ports, and combustion chambers, to exact dimension. Then each cylinder head is machined on a state of the art, 5 axis cnc machine in house. Each head is exact the same, resulting in consistent power, not obtainable with a hand ported heads of the past. Email us or call to discuss your application.
DRD CNC PORTED INTAKE PORTS
DRD CNC COMBUSTION CHAMBERS
DRD Cylinder Ports, optimized with CFD software