Burr Finish vs Dimples: Ra Size, Boundary Layers & Why Dimples KILL Port Flow | Bain Racing

Jake from Bain Racing settles the dimple debate once and for all with real science and flow data. Learn the massive difference in Ra surface finish between burr finishing and dimpling, understand why dimples create thicker boundary layers and increased drag in cylinder head ports, and discover why the aerodynamic benefits behind golf balls have zero application in internal engine flows. We explain how dimples create excessive convection that hurts performance and reveal why our plenum burr finish treatment is NOT dimpling - it's engineered surface preparation for optimal flow. This video covers: Massive Ra size differences between burr finish and dimples Why dimples increase drag and create thicker boundary layers in ports How dimples reduce negative pressure behind golf balls but fail in ports Excessive convection created by dimples and its negative effects The science behind our plenum burr finish treatment Why burr finishing is NOT dimpling despite appearance similarities Real flow bench data comparing smooth, burr finished, and dimpled ports For engine builders and porters tired of internet myths about dimpling ports. Join Jake from Bain Racing as we destroy the dimple myth with actual fluid dynamics science and measurable testing results.