What makes a 60-1 a t4 60-1? I have seen people with t3/60-1 with .62 ar turbine and .82 turbine. Does the .82 on the turbine side make it a t4 60-1? Or is there something else that makes it different? Does the compressor side get bigger than .70? Im getting a little confused seeing different people's setups.

 

i just got a 60-1, it is 82 a/r, w/ 70 a/r compressor...it says to4s on the box...sorry i cant help you more, i new to this as well

 

the t3/60-1 is actually (i hate saying this) a "hybrid" basically using a t3 turbine wheel and t3 turbine housing on a t4 center section with the to4s compressor.

the t4/60-1 uses the t4 turbine housing and t4 turbine wheels.

 

What's the differences between a t4 turbine wheel and a t3 turbine wheel??? Basically what I'm asking is what makes a t4 a t4 and a t3 a t3???

 

between the two, which one would you recommend for a built b18b? which one will make more hp and can i use a drag3 manifoil?