Idk why the link doesn't work. But here's the information from it.
This is a simple step by step guide on how to two way a stock ram. The stock setup for a ram is a single action spring return. that means that air from the solenoid enters the back of the ram propelling it forward and then a spring in the front of the ram propels it backward. This setup only allows the ram to cycle about 13 times a second. What this mod does is it replaces the spring action with a air return, thus creating a double acting ram. In this setup air from the solenoid propels it forward, and then it vents and another source of air from the solenoid propels it backward. This will allow the ram to cycle at much higher rates, and with qevs (quick exhaust valves) the ram will be able to cycle even faster.
Stock ram setup
Two way setup
1.) 11/32 drill bit
2.) 7/32 drill bit
3.) 5/32 or #21 drill bit
4.) Two #7 o-rings
5.) 10-32 nut (same as the nuts on the right reciever)
6.) Teflon Tape
7.) Adjustable Wrench
9.) 10-32 tap
10.) 1/16 id tubing
11.) 10-32 barb
12.) 4 way solenoid (View on Airsoldier)
The 4 way solenoid is needed because the one that comes stock on an ebolt is 3 way meaning it has one feed hole, one exhaust, and one feed for the ram. The 4 way has one main feed, two exhausts, and two feeds for the ram, one for each chamber. They are sometimes reffered to as 5 way because they count each exhaust seperate but the 4 way term just counts the two exhausts as one.
(Edit by Tippmaster)
Your stock GTA ebolt board is compatible with the new 4-way solenoid valve. This is because the only difference between 3-way and 4-way manifold solenoids is the manifold itself. You do not need a new board to use the two-way ram setup. However, since the GTA board is electronically capped at 13 cycles per second, you will not be able to take full advantage of the improved ram operation.
Step One:- Drilling the holes
a.) Drill the return hole in the ram with the 5/32 or #21 drill bit.
b.) Drill the nut out with the 7/32 drill bit.
c.) Using the 11/32 drill bit drill the back of the ram cap out until when you put the o ring in it is level with the top of the cap.
Step Two:- Tap the return hole
a.) Using the 10-32 tap insert it in the hole and turn it going 1/2 turn in and the 1/4 turn back until all the way through. (lube the tap with either water or some of your gun oil while doing this)
b.) Take the ram to the sink and wash all of the metal shavings out.
Step Three:- Put the ram together and install a o-ring
a.) Put the ram internals all together and make sure to put a little loctite on the plunger when you screw it in.
b.) Take the little O-ring thing off the plunger and replace it with the oring you bought.
c.) Put some teflon tape on the cap and screw it into the body.