Radium VTA Competition Catch Can

This kit is universal. It can be installed in vent to atmosphere (VTA) format, or the included adapter can be used in vent to engine (VTE) format on any engine.

For high powered engines, Radium Competition Catch Cans (CCC) have a much larger capacity than standard Radium catch cans. There is a large (L) and extra large (XL) version of the CCC. The XL CCC meets the common 1 quart minimum capacity requirements dictated by many organizing bodies including SCCA, NASA, Formula Drift, etc.

This new iteration of the competition catch cans, now possess the ability to plumb the crankcase system in 2 different manners; vent to atmosphere and vent to engine. 

Vent to Atmosphere (VTA): Out of the box, the competition catch can is configured to vent to atmosphere. The giant non-restrictive outlet is over 183% larger than the inner diameter of the 10AN inlets. This increase in volume slows air flow allowing vapors to fall out of suspension. Additionally, contaminants are trapped with a diffuser permitting the oil sludge to fall back into the catch can. This prevents the concern excessive overspray accumulating in the engine bay. 

Vent to Engine (VTE): This system permits the purified air to recirculate back into the intake system. Simply removing the top 3 screws, the VTA plate can be swapped for the VTE plate and gasket. Very quickly, 2 additional 7/8"-14 (10AN ORB) ports are added to the catch can converting it to a dual inlet/dual outlet catch can.

VTE Configuration



Throttle Closed Airflow



Throttle Open Airflow

When using this VTE setup, the top ports (pink) and the side ports (yellow) can be used interchangeably, ie: top ports are inlets and side ports are outlets or side ports are inlets and top ports are outlets. A PCV valve can be used with a VTE catch can to keep negative pressure in the crankcase at all times.

• When the throttle is open, the PCV valve closes and there is vacuum in the intake pipe.
• The Radium Engineering PCV valve (sold separately) flow direction must be towards the intake manifold (vacuum).
• An OEM PCV valve can ONLY be used if it is installed on the intake manifold from factory. If it is mounted on the breather port (valve cover), a PCV valve must be installed on the CCC.