blowsion flow control valve wont open!!!

[superjetincairns]

I am trying to install an adjustable flow control valve injecting into the stinger. I have it tee'd off the water line that goes out to the pisser. I am running the line overboard and trying to adjust it while tied to the trailer. I don't seem to be able to get enough water pressure to make it pop open. I'm aiming to get it to open between 2-3000rpm.
I assume I need to restrict the line going to the pisser to build up a bit more pressure in the line and force the control valve to open.
Is there a simple way to do this without restricting my overall cooling water flow by too much?

 

[BruceSki]

Make sure the straight section of the T is heading towards your flow control. That will give you the most pressure.

Dual cooling? Or single

 

[superjetincairns]

I'm only running a single cooling inlet line, into the manifold, out of head, using both outlets from head (ada) that are tee'd together into a single line into bottom of header, out the top of header into t piece, then to flow control valve to stinger and overboard to pisser, hope that makes sense.
I do have the flow control valve coming off the 't'. I'll swap that over and see if it works better.
I'm considering running one outlet from the head to a second pisser and the other one left 'as is' to feed the header and stinger etc but not sure if its worth doing with only one line coming in.
I was thinking I could then use a restrictor to build a bit more pressure for the flow control valve without restricting cooling water to the engine as it will have another pisser to exit from. thoughts?
All of the posts I read seem to run that setup but with dual cooling lines coming in.

 

[BruceSki]

I would run one line off the head to a pisser. Use the other one to supply the head pipe

 

[speedysprocket]

I do have the flow control valve coming off the 't'. I'll swap that over and see if it works better.
I'm considering running one outlet from the head to a second pisser and the other one left 'as is' to feed the header and stinger etc but not sure if its worth doing with only one line coming in.
I was thinking I could then use a restrictor to build a bit more pressure for the flow control valve without restricting cooling water to the engine as it will have another pisser to exit from. thoughts?
All of the posts I read seem to run that setup but with dual cooling lines coming in.

Do this.

 

[Roseand]

With my dual cooling setup I ended up using adjustable pissers and a hose clamp on the middle of the stinger line so I could tighten it to the desired pressure, and from there I tuned the FCV to my liking.
Sometimes proper cooling tuning takes some messing around to dial in.

 

[Dartman]

dont use 1 line off the head to a pisser this would lose even more pressure to the valve
unless you add a 2nd cooling line from tthe pump to ex manifold

 

[superjetincairns]

Hmmmm, maybe I can start trimming the spring in the flow control valve until it begins to work and then adjust it from there???

 

[Dartman]

take it apart first and make sure the ball is free and not stuck

 

[Roseand]

Superjet, try what me and speedy sprocket mentioned...
Zack at powerhouse performance is the one that recommended I do that to gain pressure.

 

[BruceSki]

Post a picture of your engine bay and cooling setup