Current info about turbocharger is not always the easiest thing to locate. Fortunately, this report includes the latest turbocharger info available.

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The A/R ratio is another important consideration in choosing the turbine-wheel. The A/R ratio is the ratio between the cross-sectional area (A) of the turbine scroll at any one point and the distance or radius (R) from that point to the center of the turbine-wheel. This ratio is always constant so each point along the turbine scroll will have the same A/R ratio. A turbo with a smaller A/R ratio will tend to create more torque while a turbo with a larger A/R ratio will provide more power because more exhaust gas energy will be acting on the turbine-wheel. Generally, an A/R ratio of 0.7 will provide better low-end response, while an A/R ratio of 1.4 will provide more top-end power.

As your knowledge about turbocharger continues to grow, you will begin to see how turbocharger fits into the overall scheme of things. Knowing how something relates to the rest of the world is important too.

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