By-Pass Valves Explained
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By-Pass Valves Explained
Here is an article one of our staff wrote about 3 years ago. Who knows... it may help some of you... others might have different ideas to add. Enjoy!
-Proficient
By-Pass Valves Explained!
Since supercharging and turbocharging began, one has been in constant search of how to increase the boost of their forced induction applications. After achieving ones desired boost pressure, one must take the necessary precautions in protecting their beloved machines of horsepower. Regardless if you have 7psi or 18psi engine, one is entitled to protect their investment. The by-pass valve is a very cost effective and simple way of ensuring the protection of your engine.
The function of the by-pass valve is to prevent the build up of air in the intake manifold from a forced induction vehicle. The concept of forced induction is to compress air into the engine. However, there are times in which the engine cannot handle the extra air that is being compressed into it. Too much compressed air will cause compressor surge (blower surge). This happens when there is a buildup of pressure in the intake manifold caused from the throttle plates being closed. The by-pass valve prevents compressor surge by relieving the compressed airflow that reverses direction as the throttle plates are closed. The two main types of by-pass valves are the standard and the race by-pass.
Standard By-Pass Valve:
The standard by-pass is the most commonly used in street applications. It is recommended for supercharged vehicles producing 6 to 12 psi of boost. Due to the relatively low amount of boost created, the by-pass takes the compressed air and re-circulates it into the supercharger when needed.
Race By-Pass Valve:
The race by-pass valve is suggested for racing applications where the boost levels exceed 12 psi. The compressed air is too great to be re-circulated into the supercharger, so it is discharged into the atmosphere. There is no benefit in using a race by-pass valve on a supercharged vehicle producing 6 to 12 psi of boost. On these applications, a race by-pass valve can cause the engine to produce less boost due to the by-pass releasing the air into the atmosphere instead of re-circulating it back into the supercharger.
Key Benefits:
· Protection against head gaskets, seals and internal engine components.
· Reduction of compressor surge
· Installation under 30 minutes
· Increases Reliability for Motor & Supercharger
Quick Installation Overview
The standard by-pass valve is installed between the supercharger discharge tube (pressure side from the supercharger to the throttle body) and the inlet tube connecting to your air filter. To install the by-pass, locate the tube or bung on the discharge and inlet tube. If there is not one, depending on the material of the tubes, you can either drill and tap for a screw in bung, or weld in a 1 ½’’ pipe. Now slide the by-pass hoses over the bung or pipe and secure with a hose clamp. For the racing application you will not connect it back into the inlet tube. Then connect the vacuum line on the Bypass valve to any manifold vacuum source.
Since the automotive industry began, one has been in constant search of how to increase horsepower. Whether you have a 350HP or 1000Hp engine, you are entitled to protect your investment. The by-pass valve is a very simple way of ensuring the protection of your vehicle.
© 2003 Proficient Performance, Inc.
-Proficient
By-Pass Valves Explained!
Since supercharging and turbocharging began, one has been in constant search of how to increase the boost of their forced induction applications. After achieving ones desired boost pressure, one must take the necessary precautions in protecting their beloved machines of horsepower. Regardless if you have 7psi or 18psi engine, one is entitled to protect their investment. The by-pass valve is a very cost effective and simple way of ensuring the protection of your engine.
The function of the by-pass valve is to prevent the build up of air in the intake manifold from a forced induction vehicle. The concept of forced induction is to compress air into the engine. However, there are times in which the engine cannot handle the extra air that is being compressed into it. Too much compressed air will cause compressor surge (blower surge). This happens when there is a buildup of pressure in the intake manifold caused from the throttle plates being closed. The by-pass valve prevents compressor surge by relieving the compressed airflow that reverses direction as the throttle plates are closed. The two main types of by-pass valves are the standard and the race by-pass.
Standard By-Pass Valve:
The standard by-pass is the most commonly used in street applications. It is recommended for supercharged vehicles producing 6 to 12 psi of boost. Due to the relatively low amount of boost created, the by-pass takes the compressed air and re-circulates it into the supercharger when needed.
Race By-Pass Valve:
The race by-pass valve is suggested for racing applications where the boost levels exceed 12 psi. The compressed air is too great to be re-circulated into the supercharger, so it is discharged into the atmosphere. There is no benefit in using a race by-pass valve on a supercharged vehicle producing 6 to 12 psi of boost. On these applications, a race by-pass valve can cause the engine to produce less boost due to the by-pass releasing the air into the atmosphere instead of re-circulating it back into the supercharger.
Key Benefits:
· Protection against head gaskets, seals and internal engine components.
· Reduction of compressor surge
· Installation under 30 minutes
· Increases Reliability for Motor & Supercharger
Quick Installation Overview
The standard by-pass valve is installed between the supercharger discharge tube (pressure side from the supercharger to the throttle body) and the inlet tube connecting to your air filter. To install the by-pass, locate the tube or bung on the discharge and inlet tube. If there is not one, depending on the material of the tubes, you can either drill and tap for a screw in bung, or weld in a 1 ½’’ pipe. Now slide the by-pass hoses over the bung or pipe and secure with a hose clamp. For the racing application you will not connect it back into the inlet tube. Then connect the vacuum line on the Bypass valve to any manifold vacuum source.
Since the automotive industry began, one has been in constant search of how to increase horsepower. Whether you have a 350HP or 1000Hp engine, you are entitled to protect your investment. The by-pass valve is a very simple way of ensuring the protection of your vehicle.
© 2003 Proficient Performance, Inc.
