1. 12 monthes Quality Warranty.
2. Sample Order is Acceptable.
3. After sale Service: Take photos Send for testing Send new turbo to customer.
4. Design new types according to customer's requirements.
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Q: Do you have other models?
A: Yes, we have, because the model is numerous, which can't show on the website one by one, any model needed, please send emails, i will reply within 24 hours seriously!
Q: Do you have other auto parts?
A: Yes, we have, any auto parts needed, please contact me, thanks.
Turbocharger A/R value
The A/R value is often indicated in the turbocharger sales brochure of the modified market to express the characteristics of the turbine. A is the meaning of Area, which refers to the narrowest part of the side inlet of the blade turbine receiving the exhaust gas. The cross-sectional area, R is Radius, refers to the distance between the center point of A (cross-sectional area) and the center point of the turbine body, and the ratio of the area to the distance between the two center points, which is the A/R value.
The smaller the A/R value, the smaller the inlet and the lower the inertia of the turbine blade, the higher the flow rate, the better the low-turn reaction, and the less the turbo-lag effect. On the contrary, the larger the A/R value is, the larger the inlet is, the blade inertia is higher, the low-turn reaction is slower, the turbo lag is more obvious, but the performance is much stronger at high turn. In simple terms, the turbine with a higher power output output can achieve an A/R value of about 0.7, while a turbine with a low torque output has an A/R value of about 0.2. Porsche's VTG variable turbine geometry blade technology achieves different turbine characteristics by varying the turbine's A/R value.