Choosing the right valve cover breather is crucial for maintaining engine health and performance. A 90-degree valve cover breather, in particular, offers a unique solution for space-constrained engine bays or situations requiring a specific routing of PCV (Positive Crankcase Ventilation) system hoses. This guide delves into the details of 90-degree valve cover breathers, exploring their benefits, applications, and considerations for selection.
What is a 90 Degree Valve Cover Breather?
A 90-degree valve cover breather is simply a PCV valve or breather filter that features a 90-degree bend in its design. This bend allows for flexible hose routing, enabling mechanics to circumvent obstacles and achieve optimal hose placement within the engine compartment. It's essential for managing crankcase pressure and preventing blow-by gases from contaminating the environment and potentially damaging engine components. Unlike straight breathers, the 90-degree angle provides significant advantages in tight spaces common in many vehicle builds and custom engine installations.
Why Use a 90 Degree Valve Cover Breather?
The primary advantage of a 90-degree breather is its flexibility in routing. This is particularly beneficial in situations where:
- Space is limited: Modern engine bays are often crowded with components, leaving little room for maneuvering hoses. The angled design allows for more efficient use of space.
- Specific hose routing is required: Some engine modifications or custom builds necessitate specific hose paths to avoid interference with other components. The 90-degree breather provides the necessary directional control.
- Aesthetic reasons: In custom builds or restorations, a neatly routed PCV system contributes to a cleaner and more professional appearance under the hood.
What are the Different Types of 90 Degree Valve Cover Breathers?
90-degree valve cover breathers come in various materials, sizes, and configurations, catering to a wide range of applications. Some common types include:
- Aluminum: Offers lightweight and durable construction. Common in performance applications.
- Plastic: A more budget-friendly option, suitable for many applications, but may not be as durable as aluminum under extreme conditions.
- Different Thread Sizes: Ensure compatibility with your valve cover's existing threads. Always check the specifications before purchasing.
- With or Without Filter: Some breathers incorporate a filter directly into the unit, while others require a separate filter to be attached.
How Do I Choose the Right 90 Degree Valve Cover Breather?
Selecting the appropriate breather involves considering several factors:
- Thread Size: Match the thread size of the breather to your valve cover. Incorrect thread size can lead to leaks or damage.
- Hose Size: Choose a breather with a hose barb size compatible with your PCV system hoses.
- Material: Select a material appropriate for your application, considering factors like durability and temperature resistance.
- Filter Type (if applicable): Ensure the filter type is compatible with your engine and its operating conditions.
What are the potential problems with a faulty 90 degree breather?
A malfunctioning 90-degree breather can lead to several issues, including:
- Excessive crankcase pressure: This can lead to oil leaks, seals failing, and potentially damaging engine internals.
- Oil contamination: Blow-by gases can contaminate the engine oil, reducing its lubricating properties and potentially causing engine damage.
- Environmental concerns: Unfiltered blow-by gases can release harmful emissions into the atmosphere.
Where can I find a 90 degree valve cover breather?
90-degree valve cover breathers are widely available from various automotive parts retailers, both online and in brick-and-mortar stores. Many performance parts suppliers also offer a wide selection of options.
Conclusion
Choosing the right 90-degree valve cover breather is vital for maintaining your engine's health and performance. By understanding the factors outlined above, you can ensure that you select a breather that meets your specific needs and contributes to a well-maintained and efficient engine. Remember always to consult your vehicle's service manual for specific recommendations and specifications.
