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Wow, that is the best response I got, and guess what, you are correct. I just figured it out about 20 minutes ago. I have no ring gap. I was supposed to file the rings, but I also thing is was the machine shop's fault. I don't think they bored it enough, because for my patictular engine...

I definatly ran lean, no doubt about that, but not enough RPMS, or boost to break anything.

ring lands are fine. Forged pistons. I am wondering if the machine shop didn't bore it out enough.

Can anybody tell me what is up with this? I ran lean due to lost ground. I limped it home, but if I gave it really any gas, it would ping. Pistons are fine, but rings are obviously no good. I have about 10 miles on the motor, with some idle time for tuning. Rod bearings are in great...

Hey, can anybody here show me a picture of a gt compressor wheel, specifically a GT67. I think I got shafted. I think I have a TO4E with a non GT wheel. Also, what type of trims can you have on the turbine with a TO4E.