Use some gloves or something soft for protection. I don't want to hear complaints that you cut your finger. Don't chuck it up in a vise because you'll damage the valve. BE CAREFUL!!!
Here's an example of a cut valve.
You'll need to spend a LOT of time polishing the cut edges both inside and outside with some very fine sand paper. The valve will need to freely slide in and out of the housing without force. If you get in a hurry and force a valve into the housing with a burr of any kind it will scratch the housing and be JUNK. Throw it away and start over.
Now take a look at the spring and endcap that you pryed out. Remember they stack like this:
You can enlarge the center hole in the endcap, but there's really no use going bigger than 0.130" since that is the I.D. of the spring. Fuel has to travel down the center of the spring on its way out of the FCA.
Again, I cannot stress deburring all edges with sandpaper and cleanliness enough. You don't have the luxury of a filter to catch your mistakes. What you leave behind goes directly into the pump plungers and then into your $350 a piece injectors.
Insert the valve, spring and press the endcap back into place and you're finished modifying your FCA.
For those of you that want to understand the FCA a little better before modifying it, we have included some cross sectional views to simply it.
Here is the housing cut open.
Here is a closer view. Look at the first darkened region (left to right). You'll notice two holes. There are four holes total and this is where the fuel enters this valve.
Here is a picture with the valve in place positioned to delver NO FUEL!
