14.7psi all day, but I made a different mistake - Saab 900 Bulletin Board - Saabnet.com
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14.7psi all day, but I made a different mistake
Posted by JohnK (more from JohnK) on Thu, 24 Jun 2004 13:43:46
In Reply to: 1 bar = 14.5 psi, JimBlake [Profile/Gallery]
, Thu, 24 Jun 2004 07:24:11
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Standard atmospheric pressure is 14.7 psi not 14.5, so 3 BAR is 44.1. I doubt if a gauge will be that sensitive to tell the difference, but 14.7 is the right number.
However, gauge pressure is true fuel pressure and you don't have to adjust for manifold pressure. Fuel pressure will rise as manifold pressure rises(or vacuum decreases) but you do not have to add or subtract from the gauge pressure to get actual fuel pressure reading. It's a closed system. Sorry if I was confusing.
posted by 208.208.152...
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