![]() This would normally draw unwanted crankcase vapor, unspent fuel, and oil sludge into the intake manifold immediately after a high load run. Conversely, the PCV hose will experience "metered" vacuum when the engine is idling, low load 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. The 20-0238 PCV Catch Can Kit runs inline with the PCV (positive crankcase ventilation) valve. Furthermore, closed systems prevent unwanted oil vapors from entering into the cabin.įor the ultimate in engine protection, Radium recommends the Tundra 20-0240 Dual Catch Can Kit" which utilizes both the "Crankcase" catch can and "PCV" catch can Closed loop systems route clean filtered air back in through the engine to be burned and to promote negative crankcase pressure for optimal performance. They do NOT vent to atmosphere (VTA), thus are emissions and track legal. ![]() Radium Engineering offers two independent Tundra oil catch can kits that are sold individually or together. Excess oil saturated air circulating back into the air intake stream can lead to degraded performance. An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from everyday driving. ![]()
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