I think I picked out the right compressor?
04-19-2002, 10:39 PM
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I think I picked out the right compressor?
Ok I read the post on how to read the compressor maps. I read some other post on those "other boards" and try to see if I figured it out. I am boosting an f22 which has about the same displacement as an H22. Roughly speaking. I want to boost at about 22 psi for the track. I think I want a T3/T04E .54 trim or the .57 trim but when I plot it out is seems that I end up in the surge category as soon as my RPM is at about 5200. That doesn't seem right. I am waiting for BN to get me my Corkey Bell book but I was wondering if you guys can help. I called up XS and they told be they had a T3/T04E turbo that was for my app. The problem is I have a T3/T04B Turbonetics in my basement that I want to use as a core. You know how XS is about their specs though SHHH. Am I right or wrong with the trim. Thanks
04-21-2002, 09:04 PM
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Re: I think I picked out the right compressor? (RH+G)
U must be reading the compressor map wrong, because for my LS 1.8L w/ T3/T04e i am just left of effeciency at 5000rpm.. no where near surge
04-21-2002, 09:17 PM
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Re: I think I picked out the right compressor? (DIRep972)
I am going to study that post better tomm. I know I am doing something wrong. What size compressor are you using?
04-22-2002, 08:03 AM
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Re: I think I picked out the right compressor? (RH+G)
I want to boost at about 22 psi for the track. I think I want a T3/T04E .54 trim or the .57 trim but when I plot it out is seems that I end up in the surge category as soon as my RPM is at about 5200.
and just to refresh my memory what was your redline again?
whenever I was doing my own numbers for real high boost like say 25 PSI, you arent gonna have "full boost" by 5000 RPM, full boost being 25 PSI.
<U>for an H22 with a T04E 60 trim and a T3 stage 3 .63 a/r, with CERAMIC BB</U>
8 psi = 2900-3100 RPM's
10 psi = 3400 RPM's
12 psi = Never ran 12psi specifically
15 psi = 3900-4100 RPM's.
18 psi = never ran 18 PSI
that was something another Luder posted on po.com, and remeber it has a ceramic Ball Bearing so boost comes on earlier than a standard turbo. If it wasa standard turbo, I would probably add 600-700 RPM's to the above numbers.
and remember these are all just guesstimations.
04-22-2002, 10:25 AM
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Re: I think I picked out the right compressor? (BlueShadow)
The T04B H-3 wheel is very common for F22's. Just a little observation I have made. Have not looked at the compressor maps.
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04-23-2002, 08:26 PM
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Re: I think I picked out the right compressor? (MarkC)
My rev-limit is 6200. I want to get to about 22 psi so how would I know at what RPM is the boost at. Should I just plot for the max RPM. I have a T04B but I want the E wheel. The F22 is similar in size to the H23 or H22 so that is why i want the E wheel. Also I felt that at 22 psi the E wheel was better suited. Sounds Good
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