At low loads, these catch cans experience atmospheric pressure. This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run.ĭual Catch Can Kit (CCV): To retain factory functionality, the two CCV catch cans run inline between each crankcase vent (CCV) port and the corresponding turbo inlets. Conversely, the PCV hoses will experience "metered" vacuum when the engine is idling, steady state cruising, and decelerating. When the intake manifold pressure is close to or greater than atmospheric pressure, the PCV "check" valve closes and, thus, this hose experiences no flow. It mounts in the LH side engine compartment. Single Catch Can Kit (PCV): The PCV catch can kit runs inline between the PCV valve and the intake manifold. No cutting, drilling or permanent modifications are required. The dipsticks built into the catch cans allow easy inspection of accumulated fluid. Furthermore, closed systems prevent unwanted oil vapors from entering the cabin. A closed loop system also promotes negative crankcase pressure for optimal performance. They do NOT vent to atmosphere (VTA), thus are emissions and track legal.Ĭlosed loop systems remove the oil and sludge from the PCV gasses before it is routed to the engine to be burned. The catch cans mount using factory holes and integrate perfectly with the surrounding components. The Radium Engineering catch cans are the most functional and integrated kits on the market. Nissan R35 GT-R Oil Catch Can Kits by Radium Engineering
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