THE 2-MINUTE RULE FOR RB26 MOTOR

The D from the engine code means dual overhead camshaft (DOHC). This is certainly completed by fitting an RB25DE or RB26DETT cylinder head and or turbo to a regular RB30E/T block. The RB25DET is not really normally used.Although this isn’t so much an engine flaw as much as It's really a style flaw, it does affect the RB30ET inside the Holden VL C