You all have some great questions/suggestions.
First, let me point out, these are cold oil tests.
Second, we do have a thermistaticly controlled barrel heater so temp can and will be set for 200 deg constant once we get to that phase.
Third, I'm looking into maybe a gas powered motor to run these tests with instead of this electrical dc motor. This way we can set idle speed pressure at the bearings with a constant rpm speed on the engine with no filter, then just apply each filter with the same base settings for a more constant look.
I have just acquired a pressure gauge setup to check on antidrain back valves as to how well they seal or not. This may or may not work, wont know until I implement it. Soon as I try it I'll give you the feed back on it.
Currently, all the filters I am working with are for the 1.9L ford escort I have, so to stay consistant with filter parameters with each other. As you can see, there is some size variances. I am looking to find two filters from the same company so to ensure both designs are simular, and see just how size would make a difference in flow which is a good question that many want/need answered including myself.
Currently, aside from those filters you see above, I have now picked up a pure One, Purolator premium plus,motorcraft,napa gold,and fram tough guard.
Will be posting as I get these on line.