Yo, I set up a custom VDI activation system involving pressurized air. the Valve will open fully at approximately 5500 RPM, but the way its setup is that the higher my RPM's are, the more air pressure there is going to be. So am I going to rupture the actuator or anything like that with too much pressure?

The way its setup is that there is a hose coming out of the airpump with a ball valve attatched to it. and i put a "T" coupler coming off the hose, with a line going to the VDI actuator. The excess air just vents off into the atmosphere. I had my girlfriend rev the car steadily to 5500 rpm, while i slowly closed the ball valve until the actuator moved the rod. I stoped now and the, until it was fully open, then i had her let off the gas. That's how i calibrated the VDI activation.
I got this idea from SonicRat BTW (thanks)

Anyway, i just wanted to know if there was a chance that id ruin the actuator/valve with too much pressure

 

Lol, nobody knows. I guess I'll find out the hard way

 

I believe it is supposed to open with 3-5 psi (read the FSM!). Much more than that could possibly damage the diaphragm inside, so I wouldnt run a shitload of pressure to it.

 

Oh ok, I woulda read the FSM but i figured it wouldnt give a specific number, because you cant calibrate the stock setup.
thx for reply kevin

 

Dude, just say it. You'll be using boost pressure from a supercharger.

The VDI actuator only needs 2.8psi to fully open, and like Kevin said, much more than that is likely to split the diaphram. What you need to do it put a tee in the actuator line with a little valve on the branch to act as an adjustable bleed that will lower the pressure seen by the actuator. If you keep it away from heat, a plastic tap used for irrigation systems should work okay.

 

EDIT:

 

Which is what I told you to do! Basically you leave an open bleed so it can release the 'excess' pressure, I've been doing it for 10k+ miles without a hitch on both my aux & vdi.

 

wtf thats not what im doing, i just explained my setup. did you not read it?
ill go take pictures.

 

I think he gets the idea that you're paranoid about popping it once you go with your supercharger, so you masked the question with the airpump instead.

 

I see, but why would it be any different with the supercharger if im still running it off the air pump

Anywhere, here is my setup, I basically copied sonic for the most part

 

BTW thx for the exact numbers

 

Apologies for the incorrect assumption. Since you've seen talking about the supercharger for so long, I figured this was the next step in your design. My bad.

So why aren't you doing it the way I suggested? It seems pointless to have an airpump when the manifold is always going to be under positive pressure.

 

Because he isn't putting the supercharger on for a while, so he wanted to make it function in the meantime.

 

True...but you will see my reason for the airpump shortly
yep