Thankx bro you've been alot of help.

 

It's a t3/t04b. From what I gather up it's t3/t04b H-trim. I measure the trim and it came to 58mm on the inducer on the compressor wheel.

 

To4b doesn't come in .70 a/r. Only .50 a/r and .60 a/r. It's a T3/TO4E. Trim isn't measured in mm. 58mm sounds about right though for the inducer of the compressor wheel.

 

You sure? My t3/t04e 46 trim turbo looks way bigger than the same turbo picture above. Well, at least the front compressor housing is. The t3/t04e front compressor housing with a .70 a/r housing would likely have a 4 inch inlet and 2 1/2 inch outlet on the compressor. While the snail above is probably a 2.75-3 inch inlet to a 2 inch outlet on the t3/t04b compressor side. I know my t3/t04b H-trim /w the .70 ar compressor housing have a 2.75 inch inlet with a 2 inch outlet. But nonetheless, it's still a good turbo.

 

I am sure. The .60 a/r TO4E housing is actually slightly larger (outer diameter) even though it's not .70 a/r. The .70 a/r TO4E has a larger inlet though. The 4" inlet is a .70 a/r TO4S cover. This turbo is a .70 a/r TO4E.

 

That turbo's decent sized, but like crx2211 said, it's definitely not a 4" inlet found on the To4S covers. I dunno about the .82 a/r though, that seems like a peak power maker to me with no ***** down low. I'd honestly rather have a .63 housing for a d16 but that's just me. :P

 

where do i get 63 housing from

 

New they're about $200. Used can be had as cheap as $60-$100 for the stage 3 one you'll need.

 

The h-trim and the 57 trim both flow at 49 lbs/min.

 

is there a larger AR than .82 for the T31?
i have boost at 2300 rpm and im concerned that at 5000 rpm it might be choking it (I dont know what turbine wheel i have)