Doug Dempsey wrote:

Underhood temperature:  100 deg F (under cowl heated air into the

intake filter)

Turbo inlet pressure 7.5 psi (15" Hg)
Turbo outlet pressure 18 psi (36" Hg) Note: the MAP will be 2-4" less

due to losses

MAP: 16.5 psi (33" Hg)
Compressor efficiency 70%  (This is probably higher than the

compressor was providing)

Outlet temperature of the turbo:  431 deg F
Pressure ratio 3.4

With these input conditions to the intercooler...
Intercooler input temperature:  431
Intercooler efficiency:  80%
Intercooler pressure loss:  1 psi (2" Hg)
Ambient temperature:  32 deg F
Intake manifold temperature post intercooler:  112 deg F

Hey, if Dave can feed 32 deg F ambient air to the intercooler, why can't
he feed it to the turbo instead of the 100 deg F under hood air?

Russell Kent

Really Dave. Shame on you :)

Paul Lamar
 
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