I can build this for about 30.00 bucks. Here is my idea.Regulate my air source (an 80 gal compressor) to 5 psi. Attach and seal my 5 psi air source to a 5 foot 2"diameter pvc tube. Attach and seal the other end of the pvc tube to the intake port on my head. Now, I seal a 1foot, 4 inch diameter pvc tube to the combustion chamber associated with the intake port that my air source is attached to. On the other end of this 1 foot 4 inch diameter tube I seal an anemometer to measure the air in CFMs. This data will only be useful when compared to my baseline data, but for 30 buck I think I will be able to measure flow improvement or degradation.
1. Since we are only in control of the inlet pressure to the intake port of the head; the ambient conditions like temperature and the barometric pressure of the day must be consistent when conducting before and after tests. 2. I am assuming no leaks. 3.And obviously all test conditions must be as close as possible to the baseline test. My anemometer is on its way from china right now. It cost 15 dollars including shipping. The accuracy of my test may suffer from my being so cheap with my choice of anemometer. But we shall see. If this works I may get a better one and then start porting heads on the side to try and recover some of the damage this jeep does to my wallet. 