2 Q's about psi...

[Jourdan]

first one: what is the lbs.=bars conversion? i have tried looking for it but i simply cannot find it....
second: what is stock psi on wrx's...but then again i SHOULD know once i know what the conversion is...

thanks for any help.

[TROLL]

http://www.onlineconversion.com/pressure.htm

PSI     HKPA
14.0      .966
14.25    0.98325
14.5      1.0005
14.75    1.01775
15        1.035
15.25    1.05225
15.5      1.0695
15.75    1.08675
16         1.104
16.25     1.12125
16.5      1.1385
16.75     1.15575
17         1.173
17.25     1.19025
17.5      1.2075
17.75    1.22475
18        1.242
18.25    1.25925
18.5      1.2765
18.75    1.29375
19        1.311
19.25    1.32825
19.5      1.3455
19.75    1.36275
20        1.38

and finally, thanks to PlatinumWRX on ClubWRX.net aka Jim on here for this info he posted back in 2001

Originally Posted by Jim

Manifold Air Pressure (or boost/vacuum) can be measure in a variety of units, these include MPa, bar, atm, psi, and inHg (inches of mercury). If I left anything out, let me know, but I think I covered all of the usual suspects.

0.1 MPa = 1.0 bar = .987 atmospheres = 14.5 psi = 29.53 inHg

These are the real unit conversions from .1 MPa to all the others with minimal rounding.

1 atm = 14.7 psi for further reference.

When the boost gauge reads 14.7 psi, that mean that you have twice the nominal atmospheric pressure available to your intake valves. When the gauge reads 0 you are at atmospheric pressure. When the gauge reads negative, you engine is drawing a vacuum on the intake manifold, just like a naturally aspirated car always does.

I hope this clears up any confusion for our members that are new to the world of turbocharging.

-Jim

p.s. A Pascal (Pa) is the metric unit for pressure equal to 1 Newton of force distributed across 1 square meter of area (N/m^2). A MegaPascal (MPa) is 1 million Pascals or 1,000,000 Newtons / 1 meter^2.

and....
to answer your question about what a stock WRX makes, i believe its roughly 9psi in 1st and 2nd gear, and 14.5 psi in 3rd, 4th and 5th.

[Jourdan]

your the man.

thanks.

[Orbit]

hey, download this little program. you can convert anything to anything. very handy.

http://joshmadison.net/software/convert/download.php

[jimtweet]

13.5 is stock PSI for the wrx...14.5 with that 3'16th mod