The day has finally come

[Ryan P]

Sent from my SPH-L710 using Tapatalk

[Ryan P]

Too lazy to post a build thread but here's some pictures.

Sent from my SPH-L710 using Tapatalk

[King Tut]

Originally Posted by Ryan P

Too lazy to post a build thread but here's some pictures.

Green zip ties for the extra speed.

[Ryan P]

Originally Posted by King Tut

Green zip ties for the extra speed.

you know it, there are some orange ones under the dash as well! The vacuum block and coolant overflow tank will be mounted for real by the end of the week. The ones on the coolant lines will probably stay forever.

[xwd]

I was debating which color BOV/WG to go with but in the end told JDL I didn't care. I got the super bling chrome silver ones. Kinda wishing I had gone with black or blue now. What spring did your WG come with? My box says it has a 6PSI spring but I don't think that's stiff enough for our cars, most have had issues with low springs with the BOV staying open during idle causing the car to idle rough.

[Ryan P]

My wastegate spring is rated at 7 psi That's the amount of pressure it will take for the actuator to open and bypass exhaust from the turbine, so it's not really a matter of not being stiff enough. It really depends on how much boost you want to run unless you get a boost controller.
What you need to worry about is the BOV spring, since those are ratted according to the amount of vacuum your engine will pull when the throttle is completely shut. A spring not properly rated for you car could lead to the BOV being partially open when it should not. My BOV has a yellow spring(11 psi) which Tial rates at -20 to -21 inHg. According to my boost gauge my motor pulls 20 inches so I'm right there.

Disclaimer: I could be off but that is my understanding of the system works.

[King Tut]

Originally Posted by Ryan P

My wastegate spring is rated at 7 psi That's the amount of pressure it will take for the actuator to open and bypass exhaust from the turbine, so it's not really a matter of not being stiff enough. It really depends on how much boost you want to run unless you get a boost controller.
What you need to worry about is the BOV spring, since those are ratted according to the amount of vacuum your engine will pull when the throttle is completely shut. A spring not properly rated for you car could lead to the BOV being partially open when it should not. My BOV has a yellow spring(11 psi) which Tial rates at -20 to -21 inHg. According to my boost gauge my motor pulls 20 inches so I'm right there.

Disclaimer: I could be off but that is my understanding of the system works.

Nailed it. A 6 or 7 psi wastegate spring is about right and the general rule is that a wastegate spring is good up to twice its rating so that will get you up to 12-14 psi with some form of boost controller.

[xwd]

Originally Posted by Ryan P

My wastegate spring is rated at 7 psi That's the amount of pressure it will take for the actuator to open and bypass exhaust from the turbine, so it's not really a matter of not being stiff enough. It really depends on how much boost you want to run unless you get a boost controller.
What you need to worry about is the BOV spring, since those are ratted according to the amount of vacuum your engine will pull when the throttle is completely shut. A spring not properly rated for you car could lead to the BOV being partially open when it should not. My BOV has a yellow spring(11 psi) which Tial rates at -20 to -21 inHg. According to my boost gauge my motor pulls 20 inches so I'm right there.

Disclaimer: I could be off but that is my understanding of the system works.

Haha oops I meant BOV spring, not WG spring. I've had external gates on other cars in the past, and 4 other turbo cars so I'm pretty familiar with how everything works. My BOV box says 6PSI on it, but I haven't actually cracked the BOV open to see what spring is in there. I had planned on using the 11PSI spring as well.