When i remove the backplate from turbo i see there is a part of it broke.

This what kind of problem can cause to the turbo if i use as it.

Pic attached

 

Get a new backplate. It'll leak like a ----------er among other things if you ran it. You can get them for cheap from G-Pop or maybe a sponsor on this site. I may have one for you too depending on what it is.

 

That's right where the piston seal rubs, IIRC. Old worn out turbos can have that issue.

W/o replacing it, it will leak. The problem is the piston seal may be bad too, so with a new backplate, it might still leak. Post a picture of the CHRA that it mates to, shaft and all. If the ring is fine (impossible to tell visually), a backplate would make it good as new, assuming you marked the exact position the wheel & nut were on the shaft.

 

Previous pic was from the Volvo turbo.

This new pics are from the Nissan AR.60 that have the same problem, even whorst because all the ring from the backplate dissapeared

Here is what i got

 

I think i need another back plate