How to choose a Garrett Turbo?

Garrett is a well-known brand in the world of turbochargers, and choosing the right turbo can be a challenge. There a two sure fire ways to choose turbos these days, first one is to analyze specs and decide based application, power goals and other attributes. For those looking for concise information but have limited knowledge about turbo technology then Garrett created the “BOOST ADVISOR” to aid your efforts. There are several factors to consider when choosing a Garrett turbo, including engine size, application, and performance goals. In this article, we will discuss the key factors to consider when choosing a Garrett turbo but remember that if you ever feel lost along the way, the boost advisor can point you in the right direction.

Engine Size and Application: The first step in choosing a Garrett turbo is to determine the size of your engine and its intended application; drag, drift, street driving, circuit or endurance racing. Garrett offers a wide range of turbochargers to suit various engine sizes and applications. For example, if you have a small engine and are looking to increase power and torque, the Garrett GT22 turbo may be a good choice. On the other hand, if you have a larger engine and are looking for maximum performance, the Garrett G series may be a better option.

Performance Goals : Your performance goals will also play a crucial role in determining which Garrett turbo to choose. Are you looking for a modest increase in power, or are you looking to build a high-performance vehicle capable of dominating the track? The Garrett GT2871R is a popular choice for those looking for a balance of power and reliability. However, if you are looking to build a high-performance drag car, the Garrett GTX5533R or GTX5533R Gen II may be a better option.

Boost Pressure and Flow Rate Another important factor to consider when choosing a Garrett turbo is the boost pressure and flow rate. Boost pressure is the amount of air pressure that the turbocharger can generate, while flow rate refers to the amount of air that the turbocharger can move through the engine. These factors will affect the overall performance of your vehicle, so it is important to choose a turbocharger that can provide the necessary boost pressure and flow rate.

Turbocharger Size and AR Ratio The size of the turbocharger and the AR ratio (aspect ratio) will also affect the performance of your vehicle. A larger turbocharger can provide more boost pressure and flow rate, but may also be more difficult to spool up. The AR ratio, on the other hand, refers to the ratio of the inlet area to the outlet area of the turbocharger. A higher AR ratio can help increase boost pressure at lower engine speeds, but may reduce overall efficiency at higher engine speeds.

Compressor and Turbine Maps Finally, it is important to consider the compressor and turbine maps when choosing a Garrett turbo. These maps show the performance characteristics of the turbocharger at various engine speeds and boost pressures. By examining these maps, you can determine which turbocharger is best suited for your engine and performance goals.

In conclusion, choosing a Garrett turbo requires careful consideration of several factors, including engine size, application, performance goals, boost pressure and flow rate, turbocharger size and AR ratio, and compressor and turbine maps. By taking these factors into account, you can choose a Garrett turbo that will provide the necessary boost and performance for your vehicle. Remember to consult with one of our turbo specialists if you are unsure about which turbocharger to choose, as they can help guide you in the right direction.