Date: Fri, 24 Mar 2006 11:22:18 +0000 (UTC) From: Craig's Saab C900 Site <c900nospam.apana.org.au> Subject: Re: boost gauges and calibration
ShazWozza <shaz_wozzanospamentspring.com> writes: >If it doesn't make sense it is probably because you don't understand what it >is measuring. Probably - this is the first turbo Saab I've owned. >The gauge measures vacuum and boost. When it is at rest (engine off) then >it should be displaying atmospheric pressure. Anything below this rest >position is vacuum, anything above is positive pressure (boost). Ok ta. I thought it might be something like that given that it's got a direct vacuum line feed connection from the intake manifold going via the over-pressure switch. >Colour calibration makes much more sense than numbers. What are you going >to calibrate it in? Bars, PSI, Pascals. What meaning do those calibrations >have to most people? SFA. >It is much easier to see that the guage is in the "yellow" and know that is >operating on moderate boost. Excursions into the "red" are perfectly normal >by the way. I guess, but still having an actual scale with real numbers gives it some meaningful quantification to go along with the coloured bands. >> I guess it's one reason people fit boost gauges with properly calibrated >> scales. >They would most likely be ricer type wankers. Think WRX, etc. 8-) he he or even, dare I mention it, a Nissan Sylvia. ewww Craig. -- Craig's Saab C900 Page at | Craig's Classic Saab Workshop - Sydney .au http://nospam/~c900 | http://www.classicsaab.net and other URL's Email: c900nospam.apana.org.au | For Saab 99/C900/9000 Enthusiasts World-Wide! Alternate: saabonautnospaml.com | Web-forums, galleries, library, links, etc.
