The International DT466 is a workhorse known for its reliability and torque. But what if you want more power? One of the most effective ways to boost performance is by installing a turbocharger. This article delves into the specifics of turbocharging a DT466, including fuel pump modifications and performance upgrades.
Understanding the DT466 Fuel System
The DT466 utilized two primary fuel pump systems: the P-pump (1993-1995) and an earlier style pump (1984-1992). Both systems are mechanical and offer significant potential for performance tuning. A key difference lies in fuel regulation; the P-pump uses a fuel plate, while the earlier version relies on an adjustable pin. The similarities, however, are crucial for upgrades. Components like fuel plates, governor springs, and even laser-cut delivery valves can be swapped between similar pumps, like those found in Cummins engines. Even the star wheel for adjusting fuel delivery is comparable.
Turbocharging the DT466: Key Considerations
Adding a turbo to your DT466 can significantly increase horsepower and torque. Scheid Diesel, for example, offers a Schwitzer turbocharger equivalent to those used in the factory 270hp DT466 trucks at a reasonable price.
Beyond the turbo itself, optimizing fuel delivery is critical. Adjusting the timing can result in a noticeable power increase, particularly in the 2200-2700 RPM range. While removing the fuel plate entirely might seem tempting, it often leads to poor running conditions due to excessive rack travel. A more balanced approach involves selecting the appropriate fuel plate (e.g., a #0 plate) and governor springs (e.g., 3k gov springs from a 6BT Cummins) to match the increased airflow from the turbo.
Fine-Tuning for Optimal Performance
Achieving optimal performance with a turbocharged DT466 requires careful tuning. Simply bolting on a turbo isn’t enough. It’s essential to consider factors like fuel delivery, timing, and exhaust gas temperatures (EGTs). Lowering EGTs can be achieved through timing adjustments and careful fuel plate selection. Upgrading to a 270hp P-pump, combined with a properly sized turbo and supporting modifications, can unlock significant power gains while maintaining reliability. Remember, professional tuning is always recommended to maximize performance and prevent engine damage.
In conclusion, adding a turbo to a DT466 is a viable path to increased power. By understanding the nuances of the fuel system and making the necessary supporting modifications, you can unleash the full potential of your International engine. Remember that a holistic approach, considering all aspects of the fuel and air delivery system, is crucial for achieving optimal and reliable performance.
