FAQ

Q1. What is your terms of packing?

A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.

Q4. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

Q5.What's the Delivery time?

A:In normal, 30 days was needed to arrange the production balance and turbos inspections ,if have spare parts stock ,7-10 days was available .

Q6.What's the Warranty ?

A:FAN AUTO supply 12 months warranty

Q7.What will be happened if unbalanced ?

A:Without highly accurate balancing, vibration will cause a whining noise, and reduce turbo bearing life.

Q8. Why is it so important with good quality oil ?

A:Turbos must have good quality oil because it is very reliable: less than 1% of turbos fail due to a manufacturing fault with the turbo itself.,95% of turbo failures are because of problems with oil starvation, oil contamination or foreign object damage,FAN AUTO recommends Shell Helix Plus, Shell Helix Ultra or Mobil 1

Q9. What's the reasons of turbo noisy?

A:Only an unbalanced, worn out or damaged turbo will produce any significant turbo noise. Main reasons of noisy as following :

Turbo noisy

Damaged turbocharger

Air pipe into turbo restricted

Air pipe from filter to turbo leaking

Air pipe from turbo to inlet manifold leaking

Carbon build-up in turbo bearing housing

Blockage in exhaust system

Exhaust gas leaking from manifold

Exhaust gas leaking from manifold


Q10. What is compressor surge?
A. The surge region, located on the left-hand side of the compressor map (known as the surge line), is an area of flow instability typically caused by compressor inducer stall. The turbo should be sized so that the engine does not operate in the surge range. When turbochargers operate in surge for long periods of time, bearing failures may occur. When referencing a compressor map, the surge line is the line bordering the islands on their far left side. Compressor surge is when the air pressure after the compressor is actually higher than what the compressor itself can physically maintain. This condition causes the airflow in the compressor wheel to back up, build pressure, and sometimes stall. In cases of extreme surge, the thrust bearings of the turbo can be destroyed, and will sometimes even lead to mechanical failure of the compressor wheel itself. Common conditions that result in compressor surge on turbocharger gasoline engines are:
-A compressor bypass valve is not integrated into the intake plumbing between the compressor outlet and throttle body
-The outlet plumbing for the bypass valve is too small or restrictive
-The turbo is too big for the application

Q11. What is Turbo Lag?

A. Turbo lag is the time delay of boost response after the throttle is opened when operating above the boost threshold engine speed. Turbo lag is determined by many factors, including turbo size relative to engine size, the state of tuning of the engine, the inertia of the turbo's rotating group, turbine efficiency, intake plumbing losses, exhaust backpressure, etc.



CONTACT US

Contact: sales

Phone: +86 21 67968098

Tel: +86 21 67968098

Email: sales@afanauto.com

Add: NO.2039 longhao road, jinshan district, shanghai