Anyone ever used, seen or heard anything about GT-K turbos? A friend is trying to convince me to get the 650, but I think it is too big and will spool too slow so I'm thinking of using the 550. Any comments or suggestions?

 

The turbine A/R's on those turbos seem to be very small for a 13B.

 

It supposed to be good for up to 700hp, but I'm only planning on running 10lbs of boost and I'm looking for a MAX 500 hp, maybe less.

 

Unless you have a 20b, don't expect to see anywhere north of 350hp at 10psi

 

10 psi? hell, you can go with a 60-1 for that. Why such low boost?

 

I dunno about that. I made 383rwhp at only 12 psi with a small streetport 13bt. 350rwhp @ 10psi is doable no sweat. But 500rwhp @ 10psi yeah, thats gonna take a 20b.

 

I just want to leave it at 10 for everyday driving but I will turn it up for events. I'm also running a half bridge.

 

i dont know..but i'm currently putting in the GTK1000 in my FD...number's real soon..

 

With what little numbers i have found, the 550 is around the same size as a T04B, 60-1. The 650 is around a T-66 and GReddy T78. The GT-K 1000 is around the size of a HKS T51 SPL and Garrett T-76. This is just going by the compressor inducer.

 

This might help

GTK 650

1 Year Warranty

INFO

Turbo GTK 650

Power Range 575-700

Compressor Wheel Size HP66

Comp Wheel Inducer Diameter 2.580"

Comp A/R .70

Comp Housing Inlet/Outlet Connections 4.00"/2.50"

Turbine Housing A/R .68

Turbine Housing Inlet/Outlet Connections 4 bolt square/4" V-Band

Turbine Wheel Trim F1 S Trim

Turbo Part Number 11262

 

That hot side A/R will choke you, and running 10 psi with a 66mm wheel is silly. Hell, I'm running 15 psi with a 67mm wheel and it's not even breathing hard.

If you're wanting to run 10 psi most of the time, with a bump up to 15ish psi for high boost, with minimal lag, look into either the Gotham Racing GR63 or the A Spec T4GT35R kit.

 

.68 A/R turbine is a step in the wrong direction. I'd really wouldn't go smaller then a .84 I myself run a .96 TO4E with a 60-1 and I'm only looking to use 10-15 psi...pump gas only.