what w/g actuator = fp-grn/20g-lt?
May 6, 2007, 07:50 AM
#4
thanks guy's. Yeah, i already have seen your post's illustrating your results. 
i knew when i made this post, you 2 for certain were going to provide data.
so how much boost have you been able to run with a level boost trace on the stock actuator?
razor lab, is it by design you run less than 22 psi @ peak revs? how much w/g tension/preload are you running? list turns buckle preload from snuggly fitting over the post.
i knew when i made this post, you 2 for certain were going to provide data.
so how much boost have you been able to run with a level boost trace on the stock actuator?
razor lab, is it by design you run less than 22 psi @ peak revs? how much w/g tension/preload are you running? list turns buckle preload from snuggly fitting over the post.
Last edited by Aby@MIL.SPEC; May 6, 2007 at 08:44 AM.
May 6, 2007, 08:48 AM
#7
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May 6, 2007, 04:04 PM
#9
May 6, 2007, 04:11 PM
#10
yeah, the website does say 18 psi, but what does the 18 psi represent, plenum pressure, the pressure that it takes to move the actuator, etc? that 18 psi part is unlcear & that is why i am asking to hear what people are running for a w/g actuator, relative to a boost level of ~ 22 - 23 psi.
thanks for sharing that you were able to get down to 15 psi.
what o2 husing are you running?
thanks for sharing that you were able to get down to 15 psi.
what o2 husing are you running?
May 6, 2007, 04:47 PM
#11
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What I did was lengthen the actuator rod until the turnbuckle just slid on and off, tightened it back up and did some WOT runs. I got that reading of 15-16# as base WG presure with actuator rod set to its loosest point.
My case might be a bit atypical though. I really ground out the turbine housing exit on my Green. Mine must have less backpressure now, after I hogged it out than it did when delivered from FP.
There is a 60* radius ridge right after the exducer that is about 3/8" high, so I ground that all out and the exit is now 360* a clear shot out through. Also, the divider wall which separates the turbine exit flow from the WG flow....I ground that down on the turbine exit side. Originally it was about 1/2 thick but I trimmed it down to about 3/16" thickness. Also, I reduced the wall thickness between the divided dual port WG hole and increased the overall diameter of the WG hole to where it just barely seals.
I'm running a SSAC O2 hsg. I also gasket matched the turbine inlet from the exhaust manifold and followed that down a couple inches into the scroll. All in all I spent about 30-40 hrs on the the housing. Also I run catless, DC DP, and a renecked Magnaflow Ti.
This was probably more than you really wanted to know
My case might be a bit atypical though. I really ground out the turbine housing exit on my Green. Mine must have less backpressure now, after I hogged it out than it did when delivered from FP.
There is a 60* radius ridge right after the exducer that is about 3/8" high, so I ground that all out and the exit is now 360* a clear shot out through. Also, the divider wall which separates the turbine exit flow from the WG flow....I ground that down on the turbine exit side. Originally it was about 1/2 thick but I trimmed it down to about 3/16" thickness. Also, I reduced the wall thickness between the divided dual port WG hole and increased the overall diameter of the WG hole to where it just barely seals.
I'm running a SSAC O2 hsg. I also gasket matched the turbine inlet from the exhaust manifold and followed that down a couple inches into the scroll. All in all I spent about 30-40 hrs on the the housing. Also I run catless, DC DP, and a renecked Magnaflow Ti.
This was probably more than you really wanted to know
Last edited by sparky; May 6, 2007 at 04:52 PM.
May 7, 2007, 06:23 PM
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I think that some people were scared away from the FP HP actuator because of the supposed boost spike which was reported, while the stock IX actuator has no spiking behaviour.
I haven't been able to go over 19# on my Green as I am waiting on delivery of a repacement O2 sensor. So, I haven't been able to log or tune the car for the new turbo yet.
Will try to post up some graphics as soon as we get everything together and can crank up the boost.
I haven't been able to go over 19# on my Green as I am waiting on delivery of a repacement O2 sensor. So, I haven't been able to log or tune the car for the new turbo yet.
Will try to post up some graphics as soon as we get everything together and can crank up the boost.
Jun 14, 2007, 09:44 AM
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I have an fp green with upgraded actuator. And I am replacing it with a stock 9 actuator. It boosts way to high for my liking. It will boost anywhere from 22-25 minimum. I have my boost controller set at zero right now. I will have an upgraded actuator for sale soon if you want it.