Hi...I would like to say thanks to synapse.turbo.com ,and credits to Mmailto:Morgan@synapsemotorsport from honda-tech.com who shares this most useful info to us all. The above pictures are the differences between Borg warner S256 and Garrett GT3076. S256 has bigger shaft dimension to withstands the centrifugal force during high RPM. eventhough GT30 has 1mm bigger inducer, how ever s256 has bigger exducer which 85.95mm while GT is 76mm. ETT stand for extanded tip technologies which introduced by Borg warner giving more spooling and compression capabilities, some other people say better than ballbearing. S256 is journaled bearings providing user to rebuild or upgrade to another stage like installing billet impeller or compressor. U might also change to bigger inducer like the one u find on s258 series.
Borg Warner S256: .50 A/R compressor housing Compressor Inducer 56.0mm Compressor Exducer 85.95mm Turbine 75-76mm (odd number of blades couldn’t put a caliper directly on it just a ballpark figure)Turbo with .70 A/R 4 bolt housing: 21 lbs Turbo with .85 A/R 6 bolt housing: 23.2
GarrettGT3076r Compressor Inducer 57.0mm Compressor Exducer 76.14mm Turbine 59.90mmTurbo with .63 A/R 4 bolt housing 15.0 lbs.
i would recommed for u guys to have a look at his forum site becouse he shows both turbo tested on his own vehicle http://honda-tech.com/showthread.php?t=2220363
Now I would like to share mine s256 but non ETT. I brought it on january this year but under certain circumstances I had delay the installation to my engine. In order to fit it in I have to make few changes examples new exhaust magnifold, oil feed line, intercooler piping, radiator fan and down pipe.
this picture shows modified radiator fan. i have cutted at some area near to turbo housing 
it's a DSM flanged
Sorry coz this time I forgot to take picture before install it.
bellows are the pictures that show the different before installtion. this exhaust magnifold was the flage from old TD05 turbo that previously been used. different in dimension caused me to custom new exhaust.
can't fit in...how ?
hi, i am owning a 4g93t too...
ReplyDeleteand looking forward to purchase a S256... from what i understand... S256 DSM flange is a direct fit for evo 1 2 3... however not for gsr... heard from the dealer that a banana will be needed in order to fit in...
so in this case, i would like to ask bro if the previous turbo header that bro is using was commonly found outside??? am confusing... and not sure if those normal turbo header outside will give a direct fit for the S256... or i should look for customize turbo header???
hope to hear from you soon... thx in advance
sorry for late reply bro..coz attending training for 2 month..i'm 100% sure that u have to customize it..non of the market there will fit this turbo..those are ready made are meant for td05..
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