Flow Bench Plans

From this it follows that the most effective port modifications are achieved by addressing real world flow patterns and improving the port shape to improve such patterns.

Flow bench plans. A flowbench or air flow bench is a tool to measure the air flow capabilities of anything that s required to do this. The end result when the head and manifold were measured as an assembly was that the whole system flowed less than a stock system. It is and has been for decades an invaluable tool to any one interested in increasing the performance of combustion engines.

People who purchase a set of plans receive access to the pts plans area on my flowbench forum where you will find detailed pictures and discussion of my build as well as customer builds who have shared their pictures and discuss their flowbench builds. Running the flow bench tests and conducting high to low floating pressure drop tests creates the same pattern of flow reducing portto wall separations that occur during real world running conditions. The flow bench provides air flow through a component.

Generally most diy flow benches modify flow rate by using a manual valving system. 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. Unfortunately our particular flow bench is unable to reach the industry standard test pressure of 28 in h2o but it can still test different valve lifts at a constant test pressure which along with a bit of math will allow comparison to published values.