[200q20v] intercooler

QSHIPQ at aol.com QSHIPQ at aol.com
Tue Dec 4 05:55:45 EST 2001

[ Picked text/plain from multipart/alternative ]
Remember that turbos are mathed and Mapped using Pressure Ratio.  Pressure
ratio is:
PR = Boost pressure + ambient/ambient
So, if you are running 20psi in CO, say denver
PR = 20 + 12.7/12.7
PR = 2.58

Looking at the k24 turbo Map, 2.57 isn't listed, which means you are
overspinning the turbo, and your 130F inlet temp is prolly way low.  In CO,
I'd target 18 as the maximum boost pressure, 16 will keep your turbo within
the designed Map @ 2.26PR

The biggest risk you have right now is that you have no room for error.
Check your bypass valve recently?  Any hoses leaking?


Scott J

In a message dated 12/3/01 3:22:26 PM Central Standard Time,
brianl at starsys.com writes:

Im using a peak flow 19.7 lbs/min (.85 VE) as the mass flow rate.  I'm
using an inlet air temperature of 130F (wag).  Up here in CO.  I'm spinning
my k-24 at 140,000 at 20 psi????


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