I made up a fitting that attached to the radiator bleed bolt that ran to a vacuum/30 psi gauge. I wanted to see what the system pressure actually ran at during normal driving. It ran higher than I thought, reaching 14 psi when hot, near, or at the set point of the pressure cap. I assume there was some push over into the overflow tank? A useful tool for leak testing, as you can watch it slowly drop off when the engine is shut down. The fitting was made from a drilled out brass nut (5/16"?). I cross drilled into one of the flats and soldered 1/8" copper tubing to it. (Looked like a banjo fitting.) Pinched it under the bleed bolt with an extra gasket to seal it. Ran the tubing up and pinched the gauge under the wiper arm so I could see it from inside. Pressure surges with the rpms of course. I had suggest using the turbo boost gauge for a permanent installation as they typically go from full vacuum to a few bars pressure. I don't recall seeing any vacuum, but I didn't stand there and watch it for hours. I had to wait a long time before I could remove the fitting. 5 or 6 hours IIRC!
Jay
kevin obrien <kevindobrien@YAHOO.COM>@gerry.vanagon.com> on 07/19/2003 02:13:50 AM Please respond to kevin obrien <kevindobrien@YAHOO.COM> Sent by: Vanagon Mailing List <vanagon@gerry.vanagon.com>
To: vanagon@GERRY.VANAGON.COM cc: Subject: Anyone ever rigged up a Coolant Pressure Gauge???
Hello All: Awhile back I came across something in the archives regarding using a vacuum/boost gauge to measure pressure/suction in the coolant tank of the 2.1L...anybody ever rigged something like this up? Kevin __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com
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