Rino,

    If your fuel injectors are up stream (like in the throttle body or near
to it) then fuel evaporation inside the tubes will significantly lower the
temperature of the air in the tubes.  When I moved my four injectors to my
throttle body plenimum, my aluminum tubes condensed enough water that I at
first thought I had a fuel leak.

Regarding your question about instrumentation - If I were installing the
turbo gages in a car I would use PSI, if I were installing it in an aircraft
I would use inches Hg.  Simply because that is the two different conventions
used by automobile folks and aircraft folks for the same thing.  If you
really know what they are telling you in the operating environment then
either will do, but I would stick to convention.

Ed Anderson


----- Original Message -----
From: "Rino" <lacombr@nbnet.nb.ca>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, September 11, 2003 11:52 AM
Subject: [FlyRotary] Turbo/Intercooler information


> An interresting observation about my turbo 13b installation.
>
> While running the engine to check out the systems I noticed that my
> intake runners become real cold, actually they sweat from the
> condensation on the outside.
> I have an intercooler but there was no airflow through it since the prop
> is not installed yet.
> I reason that the air is compressed by the turbo -- heated up then had
> time to cool a bit before getting into the intake manifold where it
> would expand and cool rapidly and would cool the intake runners.
>
> The intake runners were very cold to the touch.
> The engine was running idle to about 2000 rpm at the time.
>
> Rino
>
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