Definitive comparo of aftermarket turbos?

[SyHopeful]

I was just wondering if somewhere there was a comparsion of the big aftermarket turbos for turbo buicks. I've been trying to figure out which one I want to go with in the future, but I'm having a hard time because the information is so spread out. Any help?

 

[ZR1TR]

Try GNTTYPE.org

This is a excellent website for technical articles, photo guides and just about anything else. Here is a link to their turbo guide. Hope this helps.

http://www.gnttype.org/techarea/pictureguides/turboguide/turbos.html

Jonathan

 

[gnx7]

Depending upon how much your GN weighs.... but lets say a baseline 3400lbs with ported heads/intake and big cam.

Performance to be seen approximately with killer 60ft time:
TE-63 10.40's 3500 stall min (25psi+)
TE-70 9.90's 4000 stall (25psi+.... more like 30psi)
new PTE-70GTQ 4000 stall I imagine.... and one just went 9.50's... (I'm sure it was 30psi+)
PTE-67 turbos are supposed to be the latest big street turbos and are going 10's on low 20's boost

Anything bigger than a "70" IMO has no business being on the street as you will need a very high stall convertor to get it to spool. Spooling up quickly has a ton to do with tune also.

What are your goals....? If you can afford a ball bearing turbo you can lower your stall speed slightly and make the car more driveable.

If you run 100 octane or better all the time and run 20psi+ you will have a handful of a car.

-GNX7