Paul, (Dave):

Entering Dave's conditions into the stealth 316 website Turbo

Outlet Temperature Calculator, the following outlet temperatures
result using 45 deg F ambient temperatures:

Turbo outlet temp: 362 deg F @ turbo efficiency of 70%, I/C

outlet temp:  108 deg F

Turbo outlet temp: 409 deg F @ turbo efficiency of 60%, I/C

outlet temp:  118 deg F

Turbo outlet temp: 475 deg F @ turbo efficiency of 50%, I/C

outlet temp:  131 deg F

Perhaps this is a backdoor way get at the operating conditions

of the compressor??  In this case, if Dave's manifold temperature
is 130 deg F, then his compressor is operating down around 50%

efficiency!!

Note:  The website seems to have incorrectly calculated

pressure ratio at 3.01 instead of what I think should be 2.01.

Doug Dempsey

Here is a chart on this subject from Hugh Macinnis.

Paul Lamar

Doug, I say again, something is not right with that calculator.  Paul is
right that the P/R is too high (I still believe you are entering a MAP when
it is expecting a Boost pressure).  Also, not all intercoolers are the
same - not by a long shot.

Dave Leonard

 
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