WHY DELETE CCV ON 6.7 CUMMINS

Understanding the CCV System

The CCV (crankcase ventilation) system in a 6.7 Cummins engine plays a crucial role in managing crankcase pressure and removing harmful contaminants from the engine. It works by routing blow-by gases, which are a mixture of air, fuel, and combustion byproducts, back into the intake manifold.

Benefits of Deleting the CCV System

Despite its intended purpose, deleting the CCV system on a 6.7 Cummins engine can offer several benefits:

• Reduced Oil Consumption: By eliminating the CCV system, oil consumption can be significantly reduced. The CCV system can cause oil to be sucked into the intake manifold, leading to increased oil consumption. Deleting the CCV system prevents this from happening, resulting in lower oil consumption and potentially extending oil change intervals.
• Improved Engine Performance: Deleting the CCV system can improve engine performance, particularly at higher RPMs. By removing the restriction caused by the CCV system, the engine can breathe more efficiently, leading to increased power and torque output. Additionally, eliminating the CCV system reduces the risk of oil contamination and buildup in the intake manifold, which can hinder engine performance.
• Simplified Maintenance: Deleting the CCV system eliminates the need for regular maintenance and cleaning of the CCV components, such as the CCV filter and hoses. This simplification can save time and effort during maintenance intervals, making engine upkeep more manageable.

Potential Drawbacks of Deleting the CCV System

While deleting the CCV system can provide certain advantages, it is essential to consider the potential drawbacks as well:

• Increased Emissions: Deleting the CCV system can result in increased emissions, particularly hydrocarbons and particulate matter. The CCV system is designed to capture and recycle blow-by gases, which contain harmful pollutants. Without the CCV system, these pollutants are released directly into the atmosphere, potentially contributing to air pollution.
• Potential Engine Damage: In some cases, deleting the CCV system can lead to engine damage. The CCV system helps to regulate crankcase pressure, and without it, excessive pressure can build up inside the engine. This increased pressure can cause leaks, blow-by, and premature wear of engine components.

Weighing the Pros and Cons

The decision of whether or not to delete the CCV system on a 6.7 Cummins engine should be made after careful consideration of both the benefits and drawbacks. If reducing oil consumption, improving engine performance, and simplifying maintenance are priorities, then deleting the CCV system may be a worthwhile modification. However, it is crucial to weigh these potential gains against the increased emissions and the risk of engine damage.

Ultimately, consulting with a qualified diesel mechanic or performance shop is recommended before making a final decision. They can assess the specific needs and usage of your vehicle and provide expert guidance on whether or not deleting the CCV system is the right choice for you.

Frequently Asked Questions

• Q: What is the CCV system in a 6.7 Cummins engine?


• A: The CCV system is responsible for managing crankcase pressure and removing harmful contaminants from the engine by routing blow-by gases back into the intake manifold.
• Q: What are the benefits of deleting the CCV system?


• A: Deleting the CCV system can reduce oil consumption, improve engine performance, and simplify maintenance.
• Q: What are the potential drawbacks of deleting the CCV system?


• A: Deleting the CCV system can result in increased emissions and potentially lead to engine damage due to excessive crankcase pressure.
• Q: When should I consider deleting the CCV system on my 6.7 Cummins?


• A: The decision to delete the CCV system should be made after careful consideration of your specific needs and usage. Consulting with a qualified diesel mechanic is recommended before making a final decision.
• Q: Are there any aftermarket solutions that address the drawbacks of deleting the CCV system?


• A: There are aftermarket catch cans and oil separators available that can help mitigate the increased emissions and potential engine damage associated with deleting the CCV system.