[Supras] Awesome (escessive boost)

[t72pwrd]

I ram a 60 trim for about a year at 21 PSI daily before having to part the 
car  out for reasons unrelated to the turbo.  Never any problems and it was 
a fun car.  Made ~400HP at the wheels.
----- Original Message ----- 
From: <berniek at technicaldevelop.com>
To: <supras at supras.com>
Sent: Thursday, November 01, 2007 3:47 PM
Subject: Re: [Supras] Awesome (escessive boost)


> Just remembered setting the ball and spring boost controller on the bench
> tto 12 PSI, but forgot that it increases boost by the DIFFERENTIAL
> PRESSURE across it, so the boost is really 12+6 = 18 PSI if I'm right,
> where 6 PSI is the cracking pressure of the waste gate actuator.  Although
> I've temporarily attenuated the pressure transducer output to keep the
> dash gauge from pinning, it will not read above about 14 PSI (output
> voltage saturates at just under 5V).  From what I have understood about
> CT26 turbos, the maximum it should experience is 14 or 15 PSI due to
> bearing and shaft size.  The fact that it is 57 trim supposedly does not
> enter into that limitation.
>
> Does anyone have any long term experience running a 57 trim CT26 at more
> than 15 PSI?  Thanks.
>
> For the future, a better boost controller will be used.  The Dawes
> presently used is just a temporary measure.
>
> BernieK
>
>
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