440_D50

Does anyone know how to balance a turbo after a rebuild?

I'm going to rebuild the HX35 on my crewcab. I'm also replacing the inducer wheel with a new one. This is where I'm not sure what to do, as I can't simply mark how it came off and reinstall it in the same place.

Any info would be greatly appreciated.

12V_shooter25

I'm pretty sure compressor wheels are balanced before they leave the factory. I know I installed a GDS 60mm compressor housing upgrade on my 91' and it didn't require any kind of balancing. I just stuck it on the existing shaft, torqued it to 125 in/lbs and drove it from there. 7 months later, it hasn't given me a problem (knock on wood )

gorms

The fool proof way to do it is have it done at a shop that balances turbos. I sent my rotating assembly out to HTT and it came back balanced and marked. This is with a brand new Holset comp. wheel, and they had to take some material off of it to match the turbine. Some very detailed grinding off the wheel!

cdennyb

I wouldnt even considering trying to balance a turbo wheel(s) even if I knew the process. Would you have anything in your shop capable of balancing a compressor wheel that can spin at 100,000 rpm? I don't. Send it out to a mfg or shop that specializes in rebuilding and balancing, you'll be money ahead in the long run.
Yes, some turbo wheels (exh & int) are balanced pretty darn close to perfect from the mfg but after assembly on the shaft, the entire rotating assembly needs to be finalized. Any knicks or scratches will cause a slight off balance condition and the further out on the o.d. they are, the worse the condition. It is possible to run one without any kind of rebalance but longevity and reliability are achieved with the attention to detail, this is one area best left to the experts. Call around and you'll find a shop that will do it cheap enough, but whatever the cost, just consider it insurance.