egboy94

Im not really understanding the formula to calculate trim etc.. i was told by previous owner that he bought it from mike turbo inc. in miami and its a gt30r but i want to be sure.. so here are the measurements i got... maybe someone here can help me out please..

Compressor inducer 76mm
Compressor exducer 57mm
.70 a/r Housing

Turbine inducer 64mm
Turbine exducer 56mm

and here are some pictures..

TheShodan

iTrader: (14)

No. definately not a GT30R, not with that aerodynamics. Its a rather old design, that's for sure. From those measurements, it looks similar to an older M-trim, or possibly a smaller 60-1. The aero looks rather dated. It is a stage III exhaust wheel though. Expect about 400-430whp to maximize this turbocharger

egboy94

thanks for the quick response.. i guess i shouldn't aim for more than 400hp if that's the case..

wantboost

iTrader: (2)

7 blades makes it a t04b but I can't remember what trim. The wheels physically has the same inducer and exducer as a 3076 but it wont flow anything like a gt series wheel. I'll keep digging to see what I can find.

Is there a tag on the CHRA on backplate? post the numbers

egboy94

no it don't have any tag.. i don't even see anything to indicate that a tap was on the backplate and they probably removed it..

TheShodan

iTrader: (14)

The cover is obviously T04b, but there are several wheel styles that had 7 blades outside of the 60-1. the 60-1 originally came as a t04b before turbonetics and then Garrett made their more recent ones T04S cover

egboy94

i really just wanted to know what it is so i can check the hp rating.. "TheShodan" said earlier 400-430hp max.. i was more hoping the max was 500-550hp so i can feel a little comfortable at 400 knowing that the turbo isn't maxed out.. but it is what is it i just gotta work with what i have until i get money to upgrade..

TheShodan

iTrader: (14)

You won't get 550 on that turbine wheel.

egboy94

ok you seem to be well educated in the turbo industry.. this is my current setup..

complete gsr motor..
pnp head
supertech springs & retainers
stock valves
stock cams { thinking about getting s2 pro 1's}
81.5mm stock sleeve block
cp 9:0.1 pistons
eagle rods
arl bearings
oem head gasket
edelbrock victor x maniold
76mm throttle body
bosch 1600 injector
fab-worx top mount manifold
"that garrett turbo we are trying to identify now"
3" downpipe
3" intercooler piping
4" intercooler..
tial 50mm bov
walbro 255 intank
gsr tranny w/cusco lsd

what turbo do u recommend..i have been seeing alot of good number with the billet 6262 & the 6265... im also looking into getting a sleeve block.. so my power goal will be about 700hp when i do get that block.. car wont be daily driven it will probably see the street twice in a week.

TheShodan

iTrader: (14)

Good going on the Cusco LSD, though not the best for drag race. Clutch plate versions on FWDs are good circuit LSDs, but the plates aren't good for taking the shock of a drag car.

That's a tall order that your current garrett turbo would NOT work for the goals you're looking for.

What's your budget for a turbocharger? Precision 6265/6262 are ok, but for 700whp, why not step up to the 67mm? you can go Precision or Garrett, or even the Borg-Warner S366 series. Need to know your budget though. I'll PM you my recommendations and suggestions.

wantboost

iTrader: (2)

That 37 you built me is still sitting on the shelf, I havent used it. I put it on my sr20 and I shattered an oil pump gear leaving my driveway lol.

I need to talk to you about sizing again sometime. You still on aim alot?

egboy94

after i build my sleeved block i'd say $1000-1200 would be the budget for a decent turbo.. pm me..

TheShodan

iTrader: (14)

Absolutely. AIM me. I think its time to redo that turbine wheel/shaft for something a little more efficient or something else entirely.