The D from the engine code means dual overhead camshaft (DOHC). That is achieved by fitting an RB25DE or RB26DETT cylinder head and or turbo to a standard RB30E/T block. The RB25DET is not really commonly used.Anyway… If a crank provides a 0.02mm runout, Which means it will take up 0.01mm of oil clearance since it rotates within the bearing. Not