What kind of effects will this kind of damage have? No shaft play though, just the real slight side to side.

 

Are you talking about the damage on the fins?

 

damn, did you run a filter bro? those fins are all beat up!

 

Any kind of detremental effects? I'm trying to figure out if I should do some kind of rebuild or just run it as is. Will it perform fine?

 

Assuming the damage is only what you can see on the top of the fins it will run. It obviously won't perform as efficient as it should and it will probably cause more heat too...but it will still work.

 

Can I sand the kinks down?

Anyone ever bought a compressor wheel form Mitsubishi?

 

Wheel is probably out of balance too, so I'd assume its more likely to suffer a catastrophic failure.

Dave

 

+1

A side to side motion could be the result of bad bearings. I would be very hesitant on running that turbo since they spin up at 100k+ RPM. I can post up pictures tomorrow of a turbo coming apart and damaging intercooler piping and a down pipe. Can you measure the distance between the fin and the compressor housing with a feeler gauge when it moves to the side?

 

Going to measure it today. How much space between the blades and compressor housing is considered ok?

 

What part of catastrophic failure don't you get? Turbo wheels spin upwards of 150,000 RPM, and the tinyest impalance can cause you big problems. Take the turbo off, send it out to a reubilder...or buy a used VIII turbo for $300, or upgrade to a IX turbo for a few hundred more.

If you continue to use that turbo, sooner rather than later, the bearings will give out and the wheel will come in contact with the housing.

Dave

 

I understand catastrophic failure. I'm trying to figure out if there is too much play, then it may or may not be worth building.

I'm going to rebuild it myself, and just have a shop balance the center for me. I already have a new comp wheel coming.

I'm just curious as to what kind of characteristics (I guess driveability wise) kinked blades would give.

 

Ahh, gotcha! I'm actually not too sure on how to answer that one. I had a set of bearings get cooked in my GTX (IHI turbo) and the wheel was able to brush up against the housing - you could physically see the wheel move in reference to the housing when you pushed on it. I sent it into a rebuilder, and for ~$300 they re-did the bearings, put a new cold side wheel on it and it was good as new.

Dave

 

Used to be that most of the sponsored race turbos we had in the field would come back looking like that, having just run the best time ever in some cases.

Light leading edge damage like that is not going to "ruin" the performance of the wheel, you will still get close to the same performance as the stock turbo. That damage is pretty light and somewhat symetric. Your real concern could be whether or not the shaft got tweaked during the impact. I would guess no in this case based on those pics, but anything is possible with these little hair dryers. That turbo is going to whistle much louder than a wheel without that leading edge damage, that in itself is enough to let you know that compressor eff is reduced in a wheel with this type damage.

 

Thank you Robert.

 

Sounds like a challenge!

Dave