rx7legend

well, a while back i posted that my engine blew the coolant seals and i thought i had to take the engine out but me and my bro where curious and thought that it was the turbo, so we take the turbo out and bingo, all the smoke that was coming form my car was definately the turbo. when we took it out it was all covered in oil(meaning it got toast lol). the turbo was just rebuilt and only in onse session of the dyno it broke, i don't understand what happened, all the internal parts meaning the dynamic seal, thrust bearing, bronze bearings got burnt. it seems like i wasn't getting much oil on my turbo. im goona rebuild it again but i want to know if someone has had the same problem. my turbo is a stock tII turbo with a to4b compressor housing.

thanks

classicauto

iTrader: (3)

How did it fail?

Did you have it balanced?

rx7legend

well first it started smoking a huge white cloud, when i saw that i inmediately left the dyno because i didn't want to make anything worse, all the bearings are burnt and when i meant burnt i mean like in a black color. the turbo wa running fine i don't know why this happen. and what exactly you mean by balanced??? the turbo was rebuild by me and my bro, it was running just fine until whe wot it a few times.

thanks

well uhhh

^ any time you have the compressor and turbine separated, you need to have the shaft balanced. even a little wobble will mess your day up at 100,000 rpm.

rx7legend

hmmm maybe there's where i got wrong, thanks for that man, i didn't balance the shaft and maybe that could've been the problem.

Turblown

iTrader: (12)

Sounds like you starved it of oil.