Anything larger than that GT4094R (the 70mm+ compressor inducers) don't have turbine A/Rs lower than 1.01.
Like everything in the GT42xx series is all 70mm compressor inducer and all turbine housings are > 1.01 A/R
I just did the math and learned how to read compressor maps. You are right, that GT4094R turbo is a bit small for the build. It is perfect if my goal is 450hp but it becomes less and less suited as it goes 500hp+
EDIT: The GT4202R or the GTX4294R look like my best best for my current projected path. They work great on their lower end at 450hp but have good room up to 700hp. They're 74mm and 75mm compressor inducers and 82mm turbine exducers. But again, the turbines don't have any lower A/Rs than 1.01
Last edited by snowman4839; 07/20/1410:28 PM.
69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.
