Radium Engineering Competition Catch Can XL VTA/VTE - 20-1771

The Radium Engineering Competition Catch Can XL VTA/VTE (20-1771) is a universal, race-grade oil catch can built for high-powered engines that demand serious crankcase protection. With a full 1-quart (0.9L) capacity, this XL-size unit meets the minimum capacity requirements set by major motorsport organizing bodies — including SCCA, NASA, and Formula Drift — making it an ideal choice for both competitive racing builds and hard-driven street performance vehicles.

Key Features & Benefits

• Dual VTA/VTE Configuration: Ships ready to use as a Vent-To-Atmosphere (VTA) catch can right out of the box. A included VTE adapter top plate lets you quickly convert it to a Vent-To-Engine (VTE) sealed system — just swap three screws. This flexibility means one part works across a wide range of builds and sanctioning body rules.
• Extra-Large 1-Quart Capacity: At 0.9L / 32 fl oz, the XL version satisfies the 1-quart minimum requirement common to SCCA, NASA, Formula Drift, and other organizations. Less frequent drain intervals mean fewer interruptions during track days or endurance events.
• Billet Aluminum Construction: CNC-machined aluminum body delivers durability without unnecessary weight. The lower half simply unscrews for easy draining, and an integrated dipstick lets you check oil accumulation at a glance without fully disassembling the unit.
• Dual-Stage Condensing Design: The can uses a dual-stage condensing material positioned at both the inlet and outlet. These free-flowing chambers slow airflow to let oil vapors fall out of suspension and trap contaminants in a diffuser — keeping oil sludge inside the can rather than recirculating into your engine bay or intake.
• Non-Restrictive Oversized Outlet (VTA): In VTA configuration, the vent outlet is over 183% larger in area than the inner diameter of the 10AN inlets. This dramatic volume increase slows airflow without creating backpressure, improving separation efficiency significantly.
• 10AN ORB Inlet Ports: Both inlet ports use 10AN ORB (7/8"-14) threads — a popular AN fitting size that plays well with most PCV hose and fitting setups. In VTE mode, the top plate adds two additional 10AN ORB ports, giving you a true dual-inlet/dual-outlet configuration.
• Integrated 4AN ORB Drain Port: A threaded 4AN ORB (7/16"-20) port on the bottom accepts an optional petcock drain valve (sold separately), making track-day draining fast and clean.
• 360-Degree Adjustable Mounting Bracket: The included anodized aluminum bracket and stainless steel M6x1mm hardware offer full 360-degree rotation, giving you real flexibility when finding the best mounting position in a tight engine bay.
• Fully Serviceable: Unlike sealed or disposable catch cans, every component of the Radium Competition Catch Can XL can be accessed, cleaned, and reassembled — a critical feature for racers who service their cars regularly.

Specifications

• Part Number: 20-1771
• Height: 9.0" / 229mm
• Outer Diameter: 3.45"
• Weight: 2.2 lbs (with all hardware)
• Volume: 1 qt / 0.9L / 32 fl oz
• Inlet Thread Size: 10AN ORB (7/8"-14)
• Drain Thread Size: 4AN ORB (7/16"-20)
• Material: CNC-machined / billet aluminum
• Configuration (as shipped): Vent-To-Atmosphere (VTA); VTE adapter included

Fitment

The Radium Engineering Competition Catch Can XL 20-1771 is a universal product. It is not vehicle-specific and can be installed on virtually any engine with a crankcase breather or PCV system. It is compatible with both VTA and VTE crankcase plumbing approaches, making it suitable for turbocharged, supercharged, and naturally aspirated engines alike.

Important notes: This catch can is not designed for use with aftermarket crankcase vacuum pumps. Fittings are sold separately — compatible 10AN ORB adapter fittings and PCV hose in various sizes are available from Radium Engineering. If your engine does not require all ports, Radium recommends plugging unused ports with the appropriate ORB plug. Some engines with complex PCV systems may require more than one catch can.

What's in the Box

• Radium Engineering Competition Catch Can XL body (VTA configuration, ready to install)
• VTE adapter top plate and gasket (for sealed Vent-To-Engine conversion)
• Anodized aluminum mounting bracket
• Stainless steel M6x1mm mounting hardware

Note: Fittings, PCV hose, petcock drain valve, and PCV valves are sold separately.

Why Buy from ThreePiece.us

ThreePiece.us offers free shipping on every order — no minimums, no surprises at checkout. We carry the Radium Engineering Competition Catch Can XL to support builders who want reliable, race-proven parts backed by knowledgeable support. Need help figuring out the right fittings, hose sizing, or VTA vs. VTE configuration for your build? Our team is here to help you get it right the first time. Prefer to spread out your purchase? Affirm financing is available at checkout, so you can equip your build now and pay over time.

Frequently Asked Questions

What is the difference between the VTA and VTE configurations, and which should I use?

VTA (Vent-To-Atmosphere) means filtered crankcase air exits to open air at the top of the can — the default out-of-box setup. VTE (Vent-To-Engine) recirculates purified air back into the intake system for a sealed, emissions-friendlier setup. The 20-1771 ships as VTA, and the included top plate and gasket allow you to convert to VTE by swapping three screws. In VTE mode, the top ports and side ports can be used interchangeably as inlets or outlets. Check your local regulations or sanctioning body rules to determine which configuration is required for your use case.

Does this catch can meet SCCA, NASA, or Formula Drift capacity requirements?

Yes. The XL version holds 1 quart (0.9L / 32 fl oz), which meets the common 1-quart minimum capacity requirement specified by SCCA, NASA, Formula Drift, and many other sanctioning bodies. The smaller "L" version (20-1772) holds 0.625 qt and would not meet that threshold.

Are fittings and hose included?

No — the 20-1771 is sold without fittings or hose. All ports use 10AN ORB (7/8"-14) threads for the inlets/outlets and 4AN ORB (7/16"-20) for the drain. Compatible fittings and bulk PCV hose in various sizes are available separately from Radium Engineering. If you're not using all ports, be sure to pick up the appropriate ORB plugs as well.

Can I use this catch can with an aftermarket crankcase vacuum pump?

No. Radium Engineering specifically states that competition catch cans are not designed to be used with aftermarket crankcase vacuum pumps. Using one in that application is not recommended.