youre talking apples and oranges mate!!
for one thing the both compressor and turbine housings have been custom made to our requirments. compressor wheel is custom..same for the turbine wheel. ballbearing cartridge has been modified to handle much more load than a stock garrett gt-series cartridge. more specifically the turbo was spec'd out specially for our small engine (4e/5e) in mind. the turbo is far from off the shelf! hope this answers your questions.
ps: by the way you get many gt30xx variants on the gt30 familly..you didnt mention any specific one..but either way the two turbos in comparrison would be very different.
sacha
wickedEP Racing
I can see its a T3/4 chra and a GT30 style compressor cover. I didn't want to ask you trim size's as you probably won't want to give them out.
From the compressor graph you posted i'm sure a GT30 bearing catridge would hand more than enough load than you would want to run on this turbo*. I've seen another turbo similar to this, and that used a 30 compressor wheel and shaft, but utilised the same core your using. I can't see from the pictures, (a lighter covers up the big i wanted to see
)
In no way am i saying this is a bad thing, as i'm sure it works VERY well and is 99% better than what most would buy off the shelf.
*I've ran 2.5 bar on GT series turbo's for years without issues.