[Supras] 57 trim CT@ boost capability

[joe at wilmcd.com]

Bernie, I'd probably just order up some nice SS t-bolt clamps. They'll
cost you less than that.

PS: Did you get my Setrab install pics?

-Joe

>     The NAPA here sells worm drive clamps but they are nothing like you
> have ever seen.  The are super heavy duty, 3/4" wide, with a stack of
> Belleville washers under the screw to hold tension.  They are $5.00 each.
>
>
>        Bernie
>
> Jim Jobe wrote:
>> Just a tip, Napa also sells t-bolt clamps.  They are
>> much better than any worm drive clamp.
>>
>> On Wed, Dec 26, 2007 at 09:04:45PM -0500, berniek at technicaldevelop.com
>> wrote:
>>
>>> Brian and group:
>>>
>>>
>>>     Just took a break from making up hard pipes from 2-1/4" thinwall
>>> steel tubing.  The Treadstone Spearco knockoff is due tomorrow.
>>> Although I enlarged the stock air box opening, the IC discharge
>>> hardpipe
>>> won't fit there due to the width of the HKS filter on the snout of the
>>> Lex AFM and the filler neck for the windshield washer.  Yes, the HKS
>>> lets a lot of dirt though, so it will be changed to something else,
>>> probably with 3" dryer vent hose to an element located below the
>>> headlight. I'll put a grille of some sort in the bottom cover there.
>>> No floods to worry about here.  In the meantime, I'm very careful where
>>> I drive.
>>>
>>>
>>>     I'm using the stock routing for the IC discharge pipe with a
>>> coupling hose where it emerges from the fender well (have my BOV in a
>>> 2", actually 2.4", copper tee there for connection to it).
>>>
>>>
>>>     The car in question is a '91 with 550cc, Lex, 57 trim CT26, 3"
>>> turbo
>>> back and everything that goes with it.  Had a stock '90 before, only
>>> moving the wastegate actuator diaphragm connection to the 3000 pipe.
>>> On
>>> cool days I noticed almost no boost difference (plenum boost transducer
>>> only operates dash gauge, nothing more).  On 80F days, there was 2.5-3
>>> PSI more (actually 3 PSI occurred when near 100F) with everything
>>> stock.  Nonetheless, I'm now running 15 PSI at the intake plenum, so
>>> the
>>> upgraded intercooler and piping are a safety measure.
>>>
>>>
>>>     NAPA carries very good worm clamps with Belleville washers and
>>> radiator hose over 2-1/4" ID.  Wall strength seems more flexible than
>>> the Supra hose, however.  I may try some.
>>>
>>>
>>>     Bernie
>>>
>>> Walker, Brian (Rich. Dist) wrote:
>>>
>>>> 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
>>>>
>>>>
>>>>
>>>>
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>>
>>
>>
>
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