rxmiles

iTrader: (11)

If you look under the for sale section I HAD a used TII swap, well a person was going to buy it and asked about the turbo specs and upon closer inspection I noticed all but one of the fins in the turbine (exhaust) side where broken.

It looks like this:


What could have caused this? note this is not my picture but one of another rx7 stock turbo, same thing, only mine has one good fin.

rxmiles

iTrader: (11)

bump,
and I know the turbo is shot (mods must have edited my title)

Any theories uf what could have been the cause?

misterstyx69

iTrader: (142)

chipped an apex seal?..chucked a side seal?
It had to come from the engine to go through the turbo.

rxmiles

iTrader: (11)

Well my theory is that it was a used turbo that was put on the block since all seals seem to be in place.

Aaron Cake

iTrader: (1)

Could have also been excessive EGTs but I'd expect more melting if that was the case. My bet is foreign matter.

rxmiles

iTrader: (11)

I pulled of the turbo and the exhaust manifold despite the weather and found that all the apex seals are in their grooves and with a flashlight looked at the housings and saw no visible damage, it does seem to have low compression on the rear although hard to say the exact reason.
Perhaps a jammed side or corner seal since it sat for over a year previously.