[Supras] 57 trim CT@ boost capability

[Walker, Brian (Rich. Dist)]

Bernie, you're still using stock IC and pipes right? If you're seeing
15-17 psi at the manifold, you're already beyond 18 psi at the turbo.
Replacing the pipes and IC with something more headloss efficient
generally frees up 3 or so psi so I'd bet you're actually producing
18-20 at the turbo now.

Not sure why you you didn't see a difference when switching the WG
signal (psi) location. Seems if you moved it to the manifold, there
would be 3 or so psi you wouldn't be accounting for (assuming a manual
controller) and you'd see the normal max pressure plus any headloss you
are now bypassing.

Brian

Date: Mon, 24 Dec 2007 19:59:08 -0500
From: "berniek at technicaldevelop.com" <berniek at technicaldevelop.com>
Subject: [Supras] 57 trim CT@ boost capability
To: "Supras at supras.com" <Supras at supras.com>
Message-ID: <477055DC.4040005 at technicaldevelop.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

The fellow (Mario?) at Performance Techniques tells me that the 57 trim 
mod is good up to 17 PSI from a bearing wear standpoint.  I'm getting 
15-17 PSI at the intake plenum so I'm over that at the turbo.  A 
Treadstone Spearco knockoff is going in later this week, as are 2-1/4" 
hardpipes, to get the turbo discharge pressure down.  I do know that 
moving the waste gate actuator connection from the turbo discharge to 
the 3000 pipe caused very little boost increase under all but hot summer

conditions (then it was 2.5 PSI difference with an all stock engine). 


Anyone have experience with life of a 57 trim CT26 at probably 18 PSI 
boost at the turbo?  Already thinking about an upgrade.  TO-4?  Needs to

fit Lipp elbow and stock exhaust manifold.


    BernieK