It is some sort of hybrid turbo that i recently acquired so it has the stock hot side from a s5. However i cannot find any a/r ratios on the the cold side. it was polished so i believe they were sanded off. ill attach some pictures. let me know if i can measure anything that would help you.

 

that T on the compressor is the turbonetics logo so i would start there.

 

turbonetics t66 from the looks of it!

 

T66 seems a bit big. I don't think I've ever heard of 2nd gen hybrid with that big of a compressor wheel. it looks like it has a 3" inlet, and with 7 blades like that it could just be a 60-1, at least according to this thread: https://www.rx7club.com/single-turbo-rx-7s-23/diffrence-between-60-1-t04b-60-1-a-292142/

so it's probably something like a BNR stage 3

 

thanks for the help guys,
arghx good find with that thread!

 

Its a 60-1 hybrid. A/R on the compressor most likely is a .6 A/R.

~Mike........

 

thanks mike.
you guess have been great....i was thinking about running 720cc primary injectors and 1000cc secondaries with rtek, would that be big enough?