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Catch Can Kit, EVO 8-9


Click here to download installation instructions (PDF)

An oil catch can is essential on a performance vehicle to protect the engine from elevated levels of crankcase blow-by accumulated from aggressive driving. Excess oil-saturated air circulating back into the air intake stream can lead to degraded performance. Radium Engineering catch cans feature large 10AN ORB ports, a 4AN ORB drain port, 2-step oil separation baffling, and an O-ring sealed dipstick.


EVO 8-9 Catch Can Kit Details
Radium Engineering offers several completely independent oil catch can kits for the Evo 8-9 that are sold individually or together using the menu above. All kits work with the OEM strut bar. The first type do NOT vent to atmosphere (VTA), thus are emissions and track legal. Closed loop systems route clean filtered air back in through the engine to be burned and to promote negative crankcase pressure for optimal performance. Furthermore, closed systems prevent unwanted oil vapors into the cabin. The Crankcase VTA kit does not recirculate crankcase gasses back through the engine and is intended for race vehicles dealing with a large amount of blow-by gasses.


The PCV Catch Can Kit (P/N 20-0116) installs next to the RH strut tower and plumbs in-line between the PCV valve and the intake manifold. This kit maintains the OEM closed system operation of the PCV valve while keeping oil and other contaminants from entering the intake manifold. Note: Because the Radium catch cans are pressure sealed, they are safe for boosted applications, so connecting to the intake manifold is permitted without a check valve.
Contents of kit 20-0116 are shown below:


What is included in the 20-0116 PCV Catch Can Kit:
-Billet oil catch can with integrated condenser and dipstick
-Laser cut anodized RH mounting bracket
-Anodized aluminum hose ends and adapter fittings
-Enough black PCV hose for custom applications 
-Stainless steel mounting hardware 


The Crankcase Catch Can Kit (P/N 20-0117) installs next to the LH strut tower and plumbs in-line with the crankcase vent hose. This is the hose that connects from the port on the valve cover to the turbo air intake pipe. The catch can will help keep oil out of the intercooler and associated piping. This catch can may be vented to atmosphere, if desired, by purchasing an air filter vent fitting, part number 20-0050 found HERE. However, certain battery configurations may not permit the fitment of the air filter vent directly on the catch can side port.


Contents of 20-0117 are shown below:

What is included in the 20-0117 Crankcase Catch Can Kit:
-Billet oil catch can with integrated condenser and dipstick
-Laser cut anodized LH mounting bracket
-Anodized aluminum hose ends and adapter fittings
-Enough black PCV hose for custom applications 
-Stainless steel mounting hardware  


The Vent-To-Atmosphere Catch Can Kit (P/N 20-0182) is an open system used for high flowing, high horsepower applications. The closed system options listed above are adequate for most vehicles, however, some loosely built race engines operate with a large amount of boost pressure and the OEM hoses can become too restrictive from excessive blow by.

This VTA kit is intended to be used by itself as the only crankcase vent point. It replaces the stock PCV valve with a high flowing -10AN press-in valve cover fitting and 5/8" ID hose and allows the gasses to vent through the catch can to the atmosphere. This kit installs on the LH strut tower.
Because this kit mounts the catch can behind the battery, there is a chance that there might not be enough room for the included breather filter if a large battery is used. The small vent port at the end of the valve cover is plugged and not used. 
Contents of kit 20-0182 shown below:

The OEM valve cover is magnesium and cannot not be welded. Instead, the included -10AN male press-in fitting replaces the large PCV valve bushing. NOTE: this press-in fitting is NOT compatible with valve covers that came from outside the US market. More info HERE.

What is included in the 20-0182 Crankcase VTA Catch Can Kit:
-Billet oil catch can with integrated condenser and dipstick
-Laser cut anodized LH mounting bracket
-Enough -10AN (5/8") black PCV hose for all applications
-Radium 14-0136 -10AN Hose End, 2pc 90deg for push-lok hose
-Radium 14-0213 -10AN Hose End, 90deg push-lok hose end
-Radium 20-0050 barb fitting with air filter breather
-Radium 14-0274 10AN male valve cover press-in fitting
-Vacuum caps for 3/8" barbs
-Stainless steel mounting hardware


The 20-0118 Dual Catch Can Kit includes the PCV kit and Crankcase kits mentioned above, packaged together in a single box.


Optional Petcock Drain Kit

-4AN ORB to barb adapter fitting 
-Nylon 1/4" barb mini ball valve 
-PCV Compliant Rubber Hose

This kit, sold seperately, can be used to remotely drain the catch cans without the need to unscrew the canister body.

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