20-0525-FL Dual Catch Can Kit Nissan 370Z/G37
To keep the symmetry that Nissan designed into the VQ37VHR engine bay, the catch cans secure to the RH strut tower and LH strut tower. No permanent modifications are required. The two oil catch cans run inline with the twin PCV valves integrated into the valve covers retaining factory functionality.
When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV "check" valves close and, thus, these hoses experience no flow. Conversely, the PCV hoses will experience "metered" vacuum when the engine is idling, steady state cruising, and decelerating. This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.
NOTE: No inline check valve is required since Radium catch cans are pressure sealed. This means a direct intake manifold connection is permitted.
