Since its time to start measuring and adjusting port flows I decided to make a trip to lowes to buy some plumbing for a frankenstein project I have been thinking about for a while.

At the heart of my beast is the cannibalized pump from an extra shop vac I had hanging around.

The first thing I needed to do was build a basic flow measurement pipe to determine how much air this thing could move. If it couldn't flow more than a hundred CFM it would be useless for testing my ports and manifold.

Fortunately my home made manometer registered a dynamic pressure of about 2.4" which represents an unrestricted flow of 140 CFM through the test pipe. Thats more than enough flow to test a port on a 550 cc cylinder.

That means in the next few days I will have my own DIY flow bench in my garage.

The plan is to connect the pump to the valve which will be connected to the flow measurement pipe that connects to the test bench.

This will allow me to accurately measure the flow for each port for a certain pressure differential.

I will update this thread as I make more progress with my PVC, cardboard and duct tape creation.