Lowfategg

Hey guys,

So I am working on building a pair of turbos for my Z32. I was able to pick up a pair of cheap GT2560R of modified for a Z32 application (modified housings). However one came with a blown CHRA from what I believe was oil starvation. The bearing cage inside of the turbo fell apart and allowed the turbine and compressor wheels to barely make contact with the housings. I went ahead and took measurements of the compressor and turbine wheels to see how much was removed by the housings.

The compressor wheel had about .005-.007" taken off the diameter. A slight burr is on the edge of the blades that is around .375" long (where the wheel made contact).



The turbine wheel had about .01-.015" taken off the diameter. A slight burr is on the edge of the blades that is around .5" long (where the wheel made contact).





My question is, do you think these wheels are reusable if I was to clean up the blade edges and balance the rotating assembly? Would the sightly smaller diameter greatly effect the turbos performance? I don't know how critical .002-.007" is to housing/wheel clearance.

Also I would be using one of the ball bearing turbo rebuild kits available online (ebay being one of them). Do these kits actually work? I am guessing garrett does not produce these kits.

If I can't use these wheels, does anyone have a GT2560R for sale? These are the 69F00 version.

Matt Cramer

If you can get it balanced, it would probably be OK.

silencium

Have you made some experience in the meantime with these rebuild bb's?