Subject	Important note about pressure gauges...
Posted by	RSR on July 30, 2004 at 2:26 PM
	This message has been viewed 31 times.
In Reply To	Question for people with Summit Racing fuel pressure gauge posted by PLEAZURE in CA (SD) on July 30, 2004 at 12:52 PM
Message	If your pressure gauge is liquid filled and sealed to contain the liquid, it will be inaccurate as it heats up. The reason is that the gauge reads the pressure differential between the fluid and the inside of the gauge, if it is sealed. Therefore, as the gauge gets hot, the pressure inside it will rise, and the differential pressure will drop. Therefore, the pressure reading goes down as the gauge gets hotter. If your gauge is not liquid filled, then nevermind. RSR
Follow Ups	Question for people with Summit Racing fuel pressure gauge - PLEAZURE in CA (SD) 12:52:40 07/30/04 It depends on your vacuum and FPR setting what the fuel - AzHeat 13:05:09 07/30/04 The quality FPG can also give you a more accurate reading. - Spongerider :) 13:18:08 07/30/04 I should have sent it to our calibration department - PLEAZURE in CA (SD) 13:56:06 07/30/04 What I mean't to say was that the quality affects - Spongerider :) 14:13:25 07/30/04 My Autometer Electric fuel pressure gauge read at 35 at idle - Wui (Philly) 14:21:23 07/30/04 Also, I guess I got the new style Autometer electric FPG - Wui (Philly) 14:27:16 07/30/04 Yes same here ..but after some boosting it idles @37 - PLEAZURE in CA (SD) 15:42:18 07/30/04 Important note about pressure gauges... - RSR 14:26:50 07/30/04 Yes it is .. but it reads higher when warm ! - PLEAZURE in CA (SD) 15:43:44 07/30/04
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