SR20 engine has a lash adjuster for tappet clearance (except RNN14 PULSAR).
This has advantages of maintenance free or silence by clearance 0, however, on the other hand, it has disadvantages of poor movement during the high rotation because of the oil pressure control.
Therefore, SR20 has a basic problem as a base engine for tuning.
The JUN Lash Killer Kit helps SR engine to get higher rotation by introducing solid process on the lash adjuster.
- Apply a solid type cam shaft.
- The head that has lash killer process is required to change the automotive valve system for RNN14 (separate product ; valve INT/EXH, locker-arm, pivot, locker-guide, locker shaft retainer, locker valve spring, and shim. )