HKS Racing SQV Universal BOV - 71008-AK004

HKS original 3-chamber structure ensures the stable operation of blow-off valve regardless of the amount of pressure. Large 51mm valve performs great with high power and large displacement engines. Adjustable pre-load allows a wide range of applications.

Main Features

51mm Large Capacity Valve

• Idle for large displacement & High Power Engines.

3-chamber Structure & Reliefless Valve

• Reliefless valve deliveries stable operation

 Adjustable Spring

• Adjust Air Release Timing
  
  

3-chamber System

• Typical blow off valves require spring load settings for each vehicle specification. If the spring load setting is too low, the boost pressure may be relieved under high boost, and the desired boost setting may not be reached. If the spring load setting is too strong, the valve may not open at low boost.
• HKS RACING SQV utilizes a reliefless type; therefore, it delivers stable operation at all boost levels.
• Durability tests of over 1 million operations minimizes the chances of valve stick and achieves high durability.
  
  
  

HKS "RACING SQV" Structure, HKS Original 3-chamber System

HKS' original 3-chamber structure ensures stable operation regardless of the amount of boost pressure.

Step 1 Accelerator ON (Valves Closed)
As pressure rises in chamber C, pressure is applied to a single valve. The higher the boost pressure, the more pressure is applied to the valve, preventing leaks.


Step 2 Accelerator OFF (Valve Opens)
Throttle lift creates a pressure difference between chambers A&B, opening the single valve. This creates a large air volume discharge.

Step 3 Accelerator OFF (Valve Closes Plocess)
The differential pressure in chambers A & B is eliminated as time elapses, and a spring reaction force closes the valve.