1ga

iTrader: (9)

Hi everyone.
After I had solved vac issue (https://www.rx7club.com/3rd-generati...gears-1036906/) my car pulled well, but 2 weeks only
Boost on the secondary turbo missed and got smoke.

here is a link of smoky car - https://www.dropbox.com/s/kdtqlsvzvcdfyty/IMG_2256.MOV

I got out my turbocharger and saw that the secondary turbo's shaft was broken


My friend gave me his turbocharger from 96'spec FD.
It was a bit rusty, but shaft play didn't big. then cleared, installed to my car, cleared intake pipes (but I didn't clear intercooler and elbow, my fault).

After finishing installation I started the car, saw no oil or coolant leaks, no smoke in exhaust.

Then I done test run.
There was boost at primary turbo (it was felt), a run about 1 km without hard acceleration, only with low acceleration.
Then I decided to check the secondary turbo, get 5000 rpm , there wasn't proper boost, but a lot of smoke in exhaust again.
And smokes at idle already. Engine works stable (3000 km after rebuild).


I got out TC again and saw that shaft play stayed in the same condition as it was before installation.
Hot part of the first turbo was in oil, exhaust manifold also in oil, elbow in oil, throttle body in oil. See pics.







And please give me an advice.
I don't know what should I do - get another turbos or do something another ?

Thanks!

1ga

iTrader: (9)

Please help!

Radial GT

iTrader: (16)

What do you have for crank case venting? Before throttle body oil really only comes from crank case venting, or a blown compressor on a turbo.

SA3R

How much boost was it running when the turbine shaft broke?

1ga

iTrader: (9)

how can I check it ?

1ga

iTrader: (9)

0.84 kg/cm2