I'm in the middle of an engine rebuild (mid street port), tranny replacement, and deleting unnecessary items under the hood. Upon removing the sequential twins (simplified), I decided that I don't want to go through the hassle of messing with the solenoid mess anymore. So, I decided to go single.
I am going to be running an automatic tranny again and adding a ~3800 rpm stall torque converter. With all that said....
I have a Garrett T3/T4 (journal bearing) turbo with a 60 compressor and 48 turbine sitting on the shelf. I was wondering if the turbine housing is going to be too small and if so, what size would be best. I loved how I would get 10# of boost at 2500 rpms with the sequential setup. I doubt I will be running more than 15# when it's all together. Also, I normally shift at ~7k RPM when I'm beating on it.
In the mean time, I'll keep searching.
Thanks in advance,

Justin

 

Yeah, that one is definitely too small. Back to the drawing board.

 

a 60-1 compressor, or to4e-57 compressor with a bigger T3 hotside might work really nicely

 

Thanks! I'm currently looking at one similar to that from turblown.

 

My T3 1.06 A/R GT35r spooled very fast. A divided T4 is better.

A ball bearing TO4E-57 would do excellent. Keep the AR closer to a 1.0 if you can. There is a balance of spool and flow to keep it from chocking up top.

Manifold design plays a large role as well. Turblown's is among the best!