Post by
airman86 »
https://forums.nicoclub.com/airman86-u126597.html
Sat Jun 27, 2009 4:44 pm
from a t3/t4 .63 a/r garrett journal bearing turbo. bought it for $100 from a guy who said it had bad bearings. i tear it apart and find out it needs not only a rebuild kit (new bearings, which i knew i was going to do anyways), but a new compressor wheel, compressor back plate, and a turbine wheel. totals would be over $550 including the cost of the turbo. i just wanted to find a good, used turbo and throw in some new bearings and seals and call it a day.
the compressor backplate was bad because the bore where the "piston" ring on the thrust bearing fits into got reamed out when the bearings went bad. due to the excessive circular shaft play (not side to side), the compressor wheel's fins got a little flattened due to rubbing the inside of the inlet. FINALLY the turbine wheel essentially got melted when the lack of oil caused it to heat up. here it was:
compressor wheel: ($95 from gpopshop.com)
compressor backplate: ($50 from gpopshop.com, look at the inside of the bore)
and finally the turbine shaft: ($195 from gpopshop.com - gross)
there ya have it.