my buddy is looking at buying a used turbo from a local guy. we checked it out, turbine/comp wheel look great, but the CHRA is orange from decoloration. what is that indicative of? it looks like it was run super hard/hot to turn the metal that color. is that necessarily a bad thing?

thanks

 

rust?

 

not sure. i asked for a pic and this is what i got. you're right it does look ilke rust but i'm not sure.

 

That just loks like rust to me. if it was run super hot the turbine housing would be discolored and the heat would be toward the turbine housing on the center section not toward the compressor housing like in the pics, you should be fine.

 

Precision cartidge eh? Possibly Turbonetics?

 

yea... that orange stuff is called rust.

 

i was told it was a pte 5857bb. is that not the case?

 

well ball bearing turbos are water cooled so id say thats a no

 

yes that is a precision bb. their new center cartridges are air cooled. (see the fins)

 

not the newer precision ones