my logic has never failed me.
I've probably cobbled together 5 Frankenstein turbos and never had an issue with them
the only turbo i ever has an issue with was the one I paid WAY too much money for, whose wheel hit the compressor housing cause the shop MJM Turbos has no ******* clue what they are doing. The owner of the place hung up on me multiple times.
they blamed me because I rotated the compressor housing.
I will quote here:
I spoke to him and he clearly said that the turbo hits the wall.
When they assemble the turbo, they balance the wheels.
Then they will put the turbo in a strobe light and make sure does not hit the wall in hi-speed.
When you turn the housing, a slight **** eyed position or if the torque of the bolt is not even the blade will hit the wall once it reaches 800 to 900 degrees. The turbo parts contract/expand.
There is very little tolerance in the wall.....not even .4 thousandt.
Tell you what, if I can ask him to repair it and you pay for the parts will you go along?
I ended up paying to have it "repaired" since they were holding it hostage. when I got it back, it hadn't been touched still did the same thing (AND TO TOP IT OFF--they roated the turbo back, so i still had to clock it again to fit my installation).
I ended up swapping out the compressor wheel and housing and ran that turbo for years
. then i changed the wheel and compressor again, and ran for more. then i changed the chra. then the turbine wheel. and i think one other combination i cant remember. rebuilt it at least twice, changed out the thrust bearing as well. ask me how many times i got it balanced.
i was going to swap the chinacharger wheel and compressor housing on it but the chinacharger worked so well i saw no point to try.
If I was in this situation, knowing everything I know today, I'd still just buy a new turbine, rebuild the chra, and slap it all together and run it. I'd be more concerned with the tolerances of my bearings than any balancing. If I was talking about a turbo that cost more than an hours pay, i might respond differently.