Overview
The video explains the purpose, mechanics, benefits, and installation of oil catch cans for the Audi TT Mark 1, with a practical demonstration and personal recommendations.
What is a Catch Can?
- A catch can is a device installed to capture oil vapor from the engine's PCV (positive crankcase ventilation) system.
- During combustion, some pressure escapes past piston rings, carrying oil vapor and carbon deposits (blowby).
- The PCV system vents these gases to prevent engine damage but typically routes them back into the engine to be burned.
Why Install a Catch Can?
- Without a catch can, oil vapor and contaminants re-enter the combustion cycle, worsening emissions and causing carbon buildup.
- Carbonization can lead to poor engine performance, decreased fuel economy, and potential engine damage.
- Oil vapor degrades PCV hoses over time, increasing contamination and maintenance issues.
- A catch can captures oil vapor, preventing it from reaching the engine and maintaining clean airflow.
How Does a Catch Can Work?
- Oil vapor from PCV hoses enters the catch can, cools, and condenses on mesh inside, trapping contaminants.
- Cleaner air exits the can and is routed back to the turbo intake, bypassing the inlet manifold.
Installation and Practical Demonstration
- The project Audi TT already had a catch can installed, replacing the original deteriorating PCV system.
- Inside the used catch can, a mix of oil and contaminants was found, demonstrating its effectiveness.
- Installing a catch can involves re-routing simple hoses, mounting the can to the strut brace, and using clips to secure everything.
- It's considered a straightforward modification with guides available for support.
Benefits and Recommendations
- Installing a catch can is recommended for aging vehicles with failing PCV systems to reduce contamination and maintain efficiency.
- It is a cost-effective and simple alternative to sourcing OEM replacement parts for older models.
- Viewers are encouraged to comment on their experiences or questions regarding catch can installation.
Questions / Follow-Ups
- Audience is invited to share their opinions, experiences, and questions about fitting a catch can to their vehicle.