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Compound turbo installations have gained popularity among automotive enthusiasts looking to maximize performance. However, integrating turbos like Precision Turbo and Garrett Turbos can present unique challenges. This article explores common issues faced during these installations and offers practical solutions to ensure optimal performance.
Understanding Compound Turbo Systems
A compound turbo system involves using two turbos in a configuration that enhances overall engine performance. Typically, one turbo (the primary) is smaller and spools quickly, while the second turbo (the secondary) is larger and provides additional boost at higher RPMs. This setup can significantly increase horsepower and torque, but it also introduces complexities in installation and tuning.
Common Issues in Compound Turbo Installations
1. Turbo Lag
Turbo lag can be a significant issue in compound setups, especially if the turbos are not matched correctly. The primary turbo may take too long to spool, leading to a delay in power delivery.
2. Boost Leaks
Boost leaks can occur at various connection points in the system, which can lead to a drop in performance. These leaks are often caused by improper sealing or damaged hoses.
3. Oil Supply Issues
Proper oil supply is crucial for turbo longevity. Insufficient oil flow can lead to turbo failure. This issue is particularly common in compound setups where multiple turbos share the same oil supply.
4. Exhaust Backpressure
Exhaust backpressure can hinder turbo performance. If the exhaust system is too restrictive, it can prevent the primary turbo from spooling efficiently, impacting the overall performance of the compound system.
How to Fix Common Issues
1. Reducing Turbo Lag
To minimize turbo lag, ensure that the turbos are properly matched in size and characteristics. Consider using a smaller primary turbo that spools quickly and has a good response. Additionally, optimizing the intake and exhaust systems can help improve response times.
2. Addressing Boost Leaks
To fix boost leaks, inspect all connections and hoses for wear or damage. Use high-quality clamps and fittings to ensure tight seals. Performing a boost leak test can help identify any leaks in the system.
3. Ensuring Proper Oil Supply
To ensure adequate oil supply, check the oil lines for blockages and verify that the oil pump is functioning correctly. Consider using a dedicated oil feed line for each turbo to prevent oil starvation.
4. Reducing Exhaust Backpressure
To reduce exhaust backpressure, evaluate the exhaust system for restrictions. Upgrading to a larger diameter exhaust and ensuring proper routing can help improve flow and reduce backpressure, allowing the turbos to spool more efficiently.
Conclusion
Compound turbo installations using Precision Turbo and Garrett Turbos can offer incredible performance gains when executed correctly. By understanding common issues and implementing the suggested fixes, enthusiasts can achieve optimal results and enjoy the benefits of their compound turbo systems.