i currently have what i think to be a turbo off an srt-4, it has a .42 cold side .48 hot, what would this be efficent power wise up to for a stock gsr setup? also can anyone identify whether or not this is the turbo i think it is, pics are below

 

thats not a srt4 turbo.... srt4 turbos have the turbine housing built into the exhaust manifold

 

hmmm i never knew that, i dont see how that would work but ok. anyone know more about this,

i believe its a 45 trim if that helps

 

You have a .42 something. There should be a similar marking on the exhaust housing. That will be on the small end for a 1.8L IMO.

 

Doesn't Volvo use the 42?

 

yeah its a .42 cold .48 hot

 

Its a crappy chrysler t3, it has a wierd flange.

 

crappier than using a t25?

 

the chrysler t3 is internally like every other small t3 but its flanges are all different. Neither this or a t25 would work well with a gsr, you could get a 60/63 from thunderbirds, that would be a hell of alot better

 

well as far as the flange, thats not a problem, im having an adapter plate welded together, how much efficent power can this turbo afford me? im really only shooting for around 250whp, and im having it tuned,

 

dp flange is different aswell. i have the same sized turbo for my zc and im expecting boost at around 3kif not sooner,on a gsr its gonna spool stupid fast. you best be would be to find a compressor map and plot **** out. I would help more if i knew more