seperate wastgate dump on a stock turbo/wastegat set-up?, possible? Options

[CelicaB]

First off im kinda hesitant to ask this question, knowing the easiest and cheepest way is to just leave it alone, but anyways:

I have a stock ct20 turbo, and the wastegate is obvously still internal, dumping right next to the turbo housing back into the exaust flow. I was just wondering if there was any way to dump the wastegate flow out seperatly straight down? I know the shape of the wastegate and turbo exaust "port" would probaly be the reason I should just do a de-cat and leave it, but as long as its apart and I have to buy parts I was just wondering.

also, how do you know if you have a steel ct20b, or ceramic ct20b? not having mine apart yet I dont know the shape, but on the steel ct20b it looks like you may be able to seprate the flow with a flange that is shaped right. My turbo is from a 99 st205 if it makes a difference.

Steel:
Creamic:


generic photos of what downpipes are availble (not for the 7 stud ct20b though):


thanks in advance
-Bryan

[playr158]

http://mr2oc.com/showthread.php?p=2028061#post2028061

http://www.bicperformance.com/products.htm

[lagos]

people have done these before, but the word on the street is that they just cause a lot of boost creep.

[CelicaB]

hey thanks for the fast replies and links, I need to register for MR2OC so Ill check that out later.

boost creep was actually on the back of my mind as i was thinking about running a full 3" exahust, no cats, just a canister in the back. this is a track car, so noise isn't an issue. (of course up to the 103 dB limit or what ever it is now)

[eggman40]

Not entirely sure how to tell a ceramic blade from a steel one, but i would imagine you could put a magnet to the blades and see if attatches that would be my guess.

[CelicaB]

Not entirely sure how to tell a ceramic blade from a steel one, but i would imagine you could put a magnet to the blades and see if attatches that would be my guess.

The core (blades) are the same material, it's what the shaft rides on that would be steel or ceramic.

This post has been edited by CelicaB: Oct 25, 2007 - 9:36 AM