Perhaps someone will laugh for my inexperience, but here's the question:
today i received the GT3540R (or i hope it is...), but on the Garrett package the is a mark GT3571,( that should be a non ball bearing turbo, with 0.50AR compressor).
Opening the package, i found the turbo with marked .70 on the compressor housing, and this let me think it's really a GT3540, but i can't identify the turbine side ( how can i verify that's a 0.82AR? ). Can anybody tell me the correct part number for this turbo, so i can compare it with the mark on it? How can i verify if it's a ball bearing or not?
Thanks in advance, i'm really worried....
Gianluca.
Tonight ( here in Italy), if i can, i will post some pics of it.....

 

here are the pics

 

Inside the turbine inlet you will see either .63 or .82. This identifies the housing. You can see the marks in your pics.

Quick and easy way to finding out if it is ball bearing is to see how much shaft play it has. If it has a litle bit of movement then it is ball bearing. If it doesn't move then it is a journal bearing. Also, I am sure that someone might know the code on the tag for determining if it is BB but I don't.

 

Look at the size of it!!



God I love turbo ****...

 

I've verified, on the turbo the part number is 714568-5002, and Garrett chart tells that it's a 3540R, as regards the AR, it's 0.82, it's ok.
Thanks to everybody for infos.