 VDO Oil Pressure Gauge Accuracy |
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| yeahmag |
 May 2 2013, 11:52 PM
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Advanced Member  Group: Members Posts: 2,455 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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I'm starting to gather that my new VDO oil pressure gauge might not be all that great. Tonight (first time out at night) it was reading near 0lbs at idle, but the idiot light was not coming on (dual pole sender). Normally I see somewhere between 7-10lbs on the gauge when hot. My suspicion is that the voltage was lower (at idle) to the gauge because the headlights and what not were on.
I seem to remember RatWell saying these gauges weren't all that accurate, but being off by 10lbs is just silly. Gauge perked right up off idle and gave me well over 10lbs per 1K rpm. Are there any gauges that might be more accurate at the lower rpms than these? Aircraft Spruce is my favorite vendor for this stuff, but nothing they sell has any low PSI resolution in an electric gauge. |
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| pcar916 |
May 3 2013, 08:08 AM
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None
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Longacre makes stepper pressure guages and tachs well.
http://www.speedwaymotors.com/Longacre-465...CFcuh4AodvVcAtA They can't be the only ones. They're wonderful IMO. I haven't used one so I don't know if it uses the analog sending unit. OT Alert: Now, a stepper tach in an 8K motor? Oh yeah. With data-logging. Now that's useful, especially good for spotting secondary overruns (downshift overrevs). DME units have tracked that kind of thing for many years. I don't know if my 1995 unit does. |
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Posts in this topic
yeahmag VDO Oil Pressure Gauge Accuracy May 2 2013, 11:52 PM
edwin I just bought a set of aem electronic gauges for m... May 3 2013, 12:32 AM McMark One of the VW mags did a gauge comparison and pret... May 3 2013, 12:54 AM edwin The cheaper stack range do not use the stepper mot... May 3 2013, 01:06 AM MrHyde (sorry to hijack)
Would you lose the idiot light... May 3 2013, 03:54 AM
Racer Chris
(sorry to hijack)
Would you lose the idiot ligh... May 3 2013, 04:38 AM bobhasissues
There's no need to lose the light. Add a tee ... May 3 2013, 07:07 PM stugray
Make sure you have a good ground from the sender... May 3 2013, 08:26 AM yeahmag SUiOMwF9j_I May 3 2013, 02:10 PM yeahmag Wonder if something like this is the hot ticket:
... May 3 2013, 02:53 PM a914622 I ran into almost the same thing on my little die... May 4 2013, 09:20 AM yeahmag I think I've managed to confuse the issue... T... May 4 2013, 12:17 PM tradisrad I never worried about oil pressure, head temp, etc... May 4 2013, 01:02 PM |
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