5SFTE larger turbo disscussion, lets talk turbos other than the ct-26 on the 5sfe Options

[presure2]

ok guys. we all know what the 5sfte can do, equipped with a ct-based turbo, and moderate (10-~15psi) boost (180-~235whp)(i call it moderate boost, its all a "relitive" term..lol)
we know what shannons car made, @ ~11psi (~240whp) with the "ebay special" mismatched 50 trim T3/4
but, im interested in your thoughts on somthing a bit more reliable..lol
so lets start with a few turbos that we can easily adapt to our cars. (using the generic ebay adapter, or the ATS, or whatever adapter you can get your hands on..lol)
ok so, most of the adapters out there are T3 footprint, and by looking at what the mr2 guys are doing, anything sub 300whp is pretty much owned by the GT28rs aka the disco potato.
jgreening on this forum had the very first Speedsource 'rs kit, and made great power with it, along with super fast spool and response.
just going by that, it would seem like that it would be just as good a performer on the 5s, but, i have read curcumstances of 3rd gen guys having boost creep problems with it, which for us, would be death.
its an expensive turbo, @ ~1100, but it is true ball bearing, available in both a t25 and a t3 footprint, with other housing options as well.
for 270whp and above, we can start looking, again going by what the 3s guys use, (i mean hey, why not keep it simple, and go with things that are proven to start with...lol) we could go with somthing like what the ko racing "streetbrawler" kit uses, the T3/4 46 trim, with the .63 a/r turbine.
IMO i think we could spool this turbo by ~35-3800rpm, and even at low (8-10psi) boost, still make great power, and be 300whp+ capable with proper engine management, fuel ect.
i know alot of you guys would never think of droping 2k on half a turbo kit, but, in reality, for instance, somthing like the speedsource gt-28rs kit, which NONE of us could fabricate in our home garage,(carl does AMAZING work) that would "in theory" bolt on (other than all the other turbo stuff you would normally need), kinda makes me think otherwise about it.
i mean hell, even fabricating one up, out of one of those crappy ebay adapters could be made to work, just a matter of buying the proper parts, and welding up the DP ect.
what are your guys thoughts on this stuff???

[6strngs]

thanks for the help.

using the stickies, I've calculated my CFM, but I'm having a hard time finding compressor maps for this turbo and others to compare to. also I'm guessing that to find what RPM you would spool the turbo fully, you would look at the CFM for your max boost at the RPM you want it at, go to the chart, and line it up with where the center "island" begins?

[presure2]

thanks for the help.

using the stickies, I've calculated my CFM, but I'm having a hard time finding compressor maps for this turbo and others to compare to. also I'm guessing that to find what RPM you would spool the turbo fully, you would look at the CFM for your max boost at the RPM you want it at, go to the chart, and line it up with where the center "island" begins?

http://www.turbocharged.com/catalog/compmaps/fig12.html
theres a bunch.

you can go right to garrett for all the GT series.

the streetbrawler turbo is basicly a t3/4 hybrid, with a to4E 46 trim compressor side, and a t3 stage III turbine side, with your choice of A/R to suit your power goals. (most 3s guys go with the .63 for best spool.) you can look on the mr2oc dyno records for spool RPM ideas, just remember it will spool a few hundred RPM sooner on the 5s.
i had made a couple charts back in the day on the old 'puter, ill have to see if i can dig em up.
ahh yea..here ya go.
this is 7 and 10psi


@ low boost, you'd be just getting into the better efficency islands as you hit peak tq, but you'd still see boost ~3500 or so (based on 3s guys, and a .63 turbine), and would pull very well ~TQ peak, and after.
as you turn up the boost, you just bring things into even more efficent parts of the map.
i for one am really of the thinking the ct-26 is too small for all but the low boost setups on the 5s.
once your turning it up past 9 or 10 psi, your really out of the efficency island so to speak, and the exhaust housing is a really big restriction. (as shown by the 3s guys, who show that @ 15psi, exhaust manifold pressure is DOUBLE that of intake manifold pressure, which is one of the original reasons for me going with the ct-27, BTW.. )
with a better matched exhaust side, i really think that it would help efficency of the 5sfte. hence the larger turbo disscussion.