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External spring on actuator

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dvernst

Well-Known Member
Joined
Jan 9, 2006
Messages
1,879
Has anyone ever run an external spring on an actuator instead of getting a HD actuator? I have the perfect length spring to accomplish this, I just don't know if it will stand up to the heat. I have the oversize puck from RJC, and ported the hole on my turbo to match it. I can only get enough pressure to get about 22-23 psi boost. This is with the rod tightened all the way, and no hose on the actuator. Turbo is a 6152.
 
You can always wire the wastegate shut; that'll make more boost :D. Others have used external springs with success though. One way to find out.
 
I would get a plate so you can re-size the hole. I've added springs to actuators plenty of times.
 
I also run an extra spring on mine. It's looks ugly but I'm limited to 26psi if I don't have it on.

ks
 
bison said:
I would get a plate so you can re-size the hole. I've added springs to actuators plenty of times.

I actually would like to get a Garrett .63 housing for it. You quoted me a price for one in the past. Then I can size the Hole properly.
 
to re size the hole on the plate, more boost smaller hole . start with what size hole?
 
dvernst said:
I actually would like to get a Garrett .63 housing for it. You quoted me a price for one in the past. Then I can size the Hole properly.

Garrett .63 re-contoured for t350 turbine. Sealing surfaces machined flat:
 

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et10sec said:
to re size the hole on the plate, more boost smaller hole . start with what size hole?

.900"
 
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