Back to your record climb project.  For 650 hp you will probably need at
least 30 psig boost.
This would result in almost 400*F compressor outlet temp.
Unless you are running 100% methanol or ethanol you will need an
intercooler plus water.
I may have gotten this from you... Reno unlimited racers...
Pete's Law (attached)
The intercooler runs in an opened to atmosphere water boiler with no
aerodynamic drag.

Barry Bordes.

Alcohol.

Barry sent a pdf that had this useful chart in it.
The pdf itself was too big to publish.

Since we are only concerned with a minute and a half 2 gallons looks like
more than enough for the spray bar.

-------------------------------------------------------

Pete Law's PDF also had this interesting illustration.
This is 100% hind sight but it is a good illustration
of what was wrong with most WW II liquid cooled aircraft engine
cooling systems.  The heat exchangers were so thick that
by the time the cooling air got through them it was up to
the temperature of the heat exchanger.

At that point there was no further heat transfer from the metal to the air.

That led to the saying "The first half does 3/4 of the cooling work".

The ideal heat exchanger is of infinite frontal area and zero thickness.

Think of the frontal area as the heat exchanger height and width.

On a practical level keep the frontal area as large as possible and the
thickness only as thick as needed to do the cooling job.

Paul Lamar


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