Homemade Flow Bench

Or use a magnehelic as oj mentioned.

Homemade flow bench.

The diy flow bench is a basic system to measure and display volumetric air flow. Open the 5 cfm orifice. The flow bench provides air flow through a component. While using a shop vacuum to move air through the flow bench the fp1 processor estimates the flow data to 28 wc test pressure in real time as the flow test is being performed.

With high tech electronic sensors and a patented state of the art air flow metering element effective flow rate measurements can now be made with nothing more than an average shop vac for an air source. Note that all of the vacuum motors used in construction are recycled so the total cost may vary depending on what one is able to obtain second hand. Start with a reading on the manometer with the plate completely blocked off for a zero flow depression test. We had a nice superflow bench at epa and while it was cool and all it really is just a big shop vac and an incline manometer which you can make easily.

Make sure your bench is sealed so no leakage takes place except through the test piece. This micro flow bench is the most basic easiest to build flow bench using the flow performance kit fp2 0bs. Home made flow bench worth it. Diy flowbench design diy flowbench design and construction what s a flowbench.

Flow benches can teach you a lot but as mentioned they don t show hp. This flow bench will use blower motors scavenged from household vacuum cleaners to generate the airflow necessary for testing. A flowbench or air flow bench is a tool to measure the air flow capabilities of anything that s required to do this. Typically the pressure drop across the component is held constant 28 inches of water or about 1 psi is a common standard pressure for cylinder heads and the air flow is measured.

It is and has been for decades an invaluable tool to any one interested in increasing the performance of combustion engines. I m with oj on this one.