The Hidden Threat in Your Engine
All internal combustion engines generate a phenomenon known as "blow-by." This refers to the pressurized mixture of exhaust gases and unspent fuel vapors that escape past the piston rings and enter the crankcase. To manage this pressure and comply with emissions regulations, the vehicle's Positive Crankcase Ventilation (PCV) system is designed to route these oily vapors directly back into the engine's intake manifold for re-combustion. The critical issue arises when this oil mist contacts the hot intake valves and runners, leading to the rapid accumulation of hardened carbon build-up. This build-up significantly restricts airflow and degrades precise fuel metering, ultimately causing noticeable power-loss and a poor MPG rating.
This is not limited to high-performance applications; it is a crucial preventative measure for every daily driven gasoline engine. Continuous operation, especially in stop-and-go driving, generates constant blow-by, meaning contamination is persistently robbing the engine of performance and fuel efficiency.
Catch Can or Separator? Understanding Your Options
When addressing engine blow-by, you'll generally encounter two main solutions: Air-Oil Separators (AOS) and Oil Catch Cans (OCC), and the choice between them often depends on the owner's preference for maintenance versus complete contaminant removal. An AOS separates oil from blow-by vapors and then automatically returns the separated oil back into the engine's oil pan. Many users prefer this system for its "set-it-and-forget-it" convenience, as it requires little to no maintenance, making it a preferred option for daily driving. Conversely, an OCC is a simple, sealed system that traps and collects those oil and fuel contaminants for manual disposal. This article focuses on the catch can system because it completely removes all collected contaminants, including unburned fuel and water vapor, preventing them from being re-introduced to the combustion cycle. Performance enthusiasts and those who prioritize absolute performance often choose the OCC for the complete removal of these harmful substances, accepting the need for periodic upkeep in exchange for maximum oil cleanliness.
What to Look for in a Quality Solution: Precision and Convenience
Our R&D team at HPS Performance constructs our popular line of billet aluminum oil catch cans with two primary considerations: separation efficiency and ease of use. The advanced internal baffling system is designed to maximize collection efficiency. This internal architecture slows down the hot crankcase blow-by gases and forces them through a series of chambers. This process allows the oil vapor and water to rapidly cool, condense, and fall out of suspension, trapping harmful contaminants while ensuring only clean, filtered air is recirculated. This focus on efficient oil collection is crucial for modern direct-injected engines, as it significantly reduces the carbon buildup on intake valves, thereby helping to maintain optimal engine health.
The second core consideration for our R&D team is ensuring convenient operation and maintenance for the customer. This is addressed through several key elements. The catch can itself has a generous 5 fl oz capacity to provide an ample buffer between service intervals, reducing the frequency with which it needs to be drained. Maintenance is made simple with a screw-on dipstick that allows for quick and effortless monitoring of the fluid level without disassembling the unit. The base of the catch can features a 14mm hex, allowing the customer to easily attach a wrench or socket to remove the cup. The highlight of the kit is a custom-designed, powder-coated steel mounting bracket that utilizes existing factory mounting points specific to each vehicle model, ensuring a secure installation and convenient access for serviceability. Finally, each kit includes all the necessary custom-cut hoses, fittings, and accessories for a hassle-free installation that does not require any modifications–a true bolt-on product.
Signs You Might Need to Consider a Catch Can
Do you suspect carbon build-up might already be an issue in your engine? Your car will likely give you subtle hints. Common symptoms of excessive blow-by and carbon build-up include:
- Gradual power loss or sluggish acceleration.
- A slightly rough idle.
- Reduced fuel economy.
- Occasional engine knock or "pinging" under acceleration.
If these issues sound familiar, considering a catch can system is the best way to prevent the contamination from getting worse. If carbon build-up is already severe, it is advisable to have your intake valves professionally cleaned to give the engine a "refresh" and restore its peak performance before installing the catch can for long-term preventative maintenance.
Protect Your Power and Investment
A properly engineered oil catch can is an essential, long-term investment that protects engine performance, simplifies maintenance, and installs cleanly. By mitigating the source of blow-by contamination, you preserve your engine’s power, efficiency, and longevity.