After much searching, i have not been able to find the physical differences between a Turbo and Non Turbo rotor. I am mostly interested in S4 model. I would think that the combustion area should be deeper for the Turbo model.

Can anyone explain a good way to seperate the two? (i only have a turbo rotor here, which is why i cant compare the two at the moment)

 

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/i-need-know-how-tell-difference-between-s4-s5-turbo-nonturbo-rotors-604523/

 

The turbo rotor has a noticeably deeper dish then the NA rotor, but you might not recognize this unless you see the two side by side.

 

I wasnt sure if it was that noticeable which is why i wanted some kind of spec... Thanks for the help