Ylopez, I'm sorry to disappoint you but your filter adaptation will not work properly! Years ago I did a little variation of what you have done, only to prove myself that the oil flow is incorrect, and your run the risk of not filtering any oil. You'll get flow and pressure, but only because the bypass valve in the oil filter base will work overtime, but no oil will be filtered!
Please take a look at the following diagram (the free hand was done by my brother)
Dirty oil goes into the base at the bottom, flows through the inside of the pipe and comes out towards the outside of the canister and then flows into the inside of the filter and then goes clean into the engine.
With your adaptation, you are reversing the way the oil flows into the filter. In theory this can work, but the problem is that when the oil tries to get out of a spin-on filter, it finds the rubber diaphragm that will prevent the oil from going further. This rubber diaphragm is designed to prevent the oil inside the spin-on filter to drain while the engine is stopped, so oil pressure can build up immediately when you start the engine.
The following diagram shows the solution that I implemented after my first failed attempt. This design was later improved by member Pancho, with a very elaborate design that is perfect. More on that later.
The following picture shows the actual adapter that I had. Used this one on two Patrols for close to 100k miles. This adapter what basically do is reverse the flow of oil so it can go in the right direction into the spin-on filter. The only problem is that the oil passages done were too small and flow could be restricted.
Esteban Oil filter base.jpg
A few years ago, member Pancho, who is a Mechanical Engineer, after looking at my design, modified it extensively and giving it the proper oil passages. The concept of reversing the flow inside the adapter remains the same. A number of blind holes have to be drilled and capped afterwards. The next image shows one of his conceptual drawings, prior to developing precise measurements for the lathe operator guy.
Pancho Oil Filter Base A.jpg
A 3D rendering he did for better understanding of the guinea pigs (my brother and myself)
Pancho Oil Filter Base 3.jpg
And this is the actual base that Pancho sent me from Ecuador after he had it made. I've been using it for 6k miles.
Pancho Oil Filter Base.JPG
There are numerous diagrams in the internet about how the filter flows in a spin-on filter. Found a good conceptual drawing here:
http://swiftautocareservice.blogspot.com/You do not have the required permissions to view the files attached to this post.
by ylopez » Sat May 21, 2016 12:54 pm 
That seems way too easy. Looks like a perfect solution.
yep i thought about that when i finished the adapter but in some mind lapsus i decided that it was the right way. Is incredible how solution was on my head and when i saw your diagrams it totally match. Well i have a lathe and mill workshop so with some time i will fabricate the right adapter. Really thanks for all the information Esteban. Say Pancho thanks for share it. By the way también soy Ing mecanico 
