COMPATIBILITY
- Nissan R32 Skyline GT-R (RB26DETT)
OVERVIEW
The catch can draws out oil and water condensation from the crankcase gasses that would otherwise be drawn into the intake manifold. This prevents oil buildup in the intake, intercooler system walls, throttle body, and intake manifold. This effectively raises the octane, can increase engine performance from cleaner inlet air, and can lower hydrocarbon emissions. The closed system prevents unwanted oil vapors from entering into the cabin. Catch can kits include everything needed for a complete installation.
FLUID LOCK® CATCH CANS
In 2022, Radium Engineering implemented a revolutionary design change to the 7 fluid ounce standard catch can. An inherent problem always existed with typical catch cans when not serviced regularly. The fluid contaminants will eventually leave the reservoir pouring into the air intake system causing poor engine performance. To resolve this issue, Radium created the Fluid Lock® Catch Can. This contains a patented mechanism that prevents the reservoir from overfilling and traps the collected fluids until it is emptied.
FEATURES
- Direct fitment with no drilling required
- Large 10AN ORB inlet and outlet ports
- 4AN ORB drain port
- 2-step oil separation baffling
- O-ring sealed dipstick
- 7 fluid ounce capacity
- Patented Fluid Lock® system
COLLECTION & EMPTYING
The rate that your catch cans will collect oil and moisture contaminants will vary from one individual vehicle to the next, so there is no set emptying interval. PCV catch cans tend to collect more than CCV catch cans. You should check the level of your catch can using the integrated dipstick starting at 3-4 weeks of driving and repeat as needed to determine how often they should be emptied based on what you see.
Catch cans can be emptied by unscrewing the lower reservoir and removing it from the vehicle to dump out, or in cases where there is available space under the catch can, the Petcock Drain Kit can be installed and used to drain them.
In cases where oil collection is excessive you may have to address an issue with the engine. The reasons a catch can will collect an excess of oil include
- Excessive blowby from engine damage
- Crankcase windage from an over-full oil level
- Poor placement of breather ports and/or poor baffling inside breather ports
- PCV valve not closing and leaking under heavy load
20-0590-FL Dual Catch Can Kit Nissan R32 Skyline GT-R
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SUMMARYThis Radium Engineering dual catch can kit is designed specifically for the RB26DETT. Careful measure and considerations were put forth to make this a proper system. It retains a true PCV system and includes catch cans for both the PCV valve side and and crankcase vent (CCV) side of the ventilation system. The catch cans do NOT vent to atmosphere (VTA), thus are emissions and track legal. Closed loop systems remove the oil and sludge from the PCV gasses before it is routed to the engine to be burned. A closed loop system also promotes negative crankcase pressure for optimal performance. Furthermore, closed systems prevent unwanted oil vapors from entering the cabin. Two double-ended press-in fittings are provided to replace the crankcase vents on the valve covers. In addition, this system balances the intake and exhaust side of the crankcase with a large 10AN crossover hose exactly how the Nissan engineers intended (shown below). These SAE quick connect fittings are lightweight, streamline, and simple to install and service. They mount using factory holes and integrate perfectly with the surrounding components. The dipsticks built into the catch cans allow easy inspection of accumulated fluid. No extra inline check valve is required since Radium catch cans are pressure sealed. INCLUDED
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PCV CATCH CANThe PCV catch can mounts to threaded bosses on the front RH strut tower. It runs inline between the crankcase vents found on the valve cover and the PCV valve on the vacuum chamber. Large 5/8" hose and 10AN fittings are provided for both ends of the catch can. 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. 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. NOTES
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CCV CATCH CANThe CCV catch can mounts to the windshield wiper motor on the LH side of the firewall. To retain factory functionality, the CCV catch can runs inline between the crankcase vents on the valve cover and the turbo inlet pipe. Large 5/8" hose and 10AN fittings are provided for both ends of the catch can. At low loads, it experiences atmospheric pressure. However, when the engine is at high load (WOT), the line will experience high flow from the crankcase into the intake system. This would normally lead to oil and sludge accumulation in the air filter intake pipe. This oil accumulation would spread and be found in the intercooler which lowers the thermal efficiency properties of the heat exchanger and leads to decreased performance. The CCV catch can captures this and promotes clean filtered air back into the intake. |
