Turbine housing .63 T3 or .83 T4

[jazzyjay]

I was wondering the difference I would see between the .63ar T3 5 bolt housing and the .82 T4 v-band housing. If the turbine housing was placed on the same turbo what would be the difference advantage/diadvantage. Thanks in advance

 

[chaclark83]

First the turbine has to be the same and second if the turbine is large like a v trim the 83 will be to big. trust me it will spool like crap

 

[dsm-onster]

Yes, your setup and compressor doen't need any more than .63 a/r t3 housing. W/ the 84-trim turbine, of course. . . If you have less, then . . . we need to know.

 

[selmerguy]

I run a .63 ar with a 57 trim wheel. I dont get full spool untill just under 4000 rpm with my 2.0 I could not imagine the spool time fo a 83 housing.

 

[2gAWDTalon]

The bigger hot side is generally going to make more power on the top end. I had a SC6152 and had a .83 T3 hot side on it. Spooled 30+psi around 5K rpms. I now have the T4 .84 V band. This should help out in the top end. Our cars dont make big power down low, so IMO you might as well utilize what you have and build for max top end power.
The Vband discharge is really nice for DP construction and for maintenance later.