-ECR33 RB25DET-

High lift camshaft could not be used for ECR33 RB25DET because NVCS oil pipe is running beneath the valve spring and it restricts the amount of the intake valve lift. Neither, could strengthen valve spring have been manufactured according to its construction. Now, we developed RB25DET special intake valve retainer that enables corresponding to high lift camshaft by 10.25mm, by enlarging the amount of valve lift. Deceleration of the valve can be also secured by applying strengthen valve spring, which is required for the high lift camshaft and high rotation of the engine.