 WTB - old skool VDO CHT, What cha’ got |
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| Superhawk996 |
 Jun 30 2026, 01:35 PM
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#1
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914 Guru  Group: Members Posts: 7,930 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch 
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Anyone have an old VDO Cylinder Head Temp gauge around in decent condition?
I know these have fallen out of favor since they aren’t temperature compensated but curious if anyone still has one floating out there in the back of the parts bin, maybe unused & unloved?  What cha’ got? |
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| JamesJ |
Jun 30 2026, 01:50 PM
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#2
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Member Group: Members Posts: 289 Joined: 30-April 20 From: Sunnyvale, CA Member No.: 24,202 Region Association: Northern California
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Not to hijack, but does anyone know if these can be rebuilt?
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| 914Sixer |
Jun 30 2026, 05:27 PM
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#3
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914 Guru Group: Members Posts: 9,506 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Might check with John Bell or NHS.
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| Superhawk996 |
Jun 30 2026, 05:32 PM
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#4
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914 Guru Group: Members Posts: 7,930 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(JamesJ @ Jun 30 2026, 03:50 PM)  Not to hijack, but does anyone know if these can be rebuilt? Sort of a loaded question. They are basically a sensitive milli-volt meter calibrated to a specific thermocouple output where x milli-volts output from the thermocouple equals y temperature. So if the actual movement is damaged it would be nearly impossible to fix. I’ve never seen the circuit but if it is using a op-amp or something similar to measure and amplify the milli-volt thermocouple output then a repair may be feasible. There is one on eBay right now where the movement seems to be damaged (showing 150F) with no thermocouple attached. Too expensive to take the risk on not knowing if it could be fixed so I posted here. |
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| rfinegan |
Jun 30 2026, 06:11 PM
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#5
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Senior Member Group: Members Posts: 1,207 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region
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I have one in my parts box, let me dig around a bit and find it
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| Root_Werks |
Jul 1 2026, 11:09 AM
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#6
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Village Idiot Group: Members Posts: 9,021 Joined: 25-May 04 From: About 15NM from Canada Member No.: 2,105 Region Association: Pacific Northwest
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Yikes, didn't realize these were NLA. Used one on eBay looks a little rough:
https://www.ebay.com/itm/205574449012?_skw=...ABk9SR8i-vurjZw |
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| Superhawk996 |
Jul 1 2026, 11:59 AM
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#7
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914 Guru Group: Members Posts: 7,930 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch
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QUOTE(Root_Werks @ Jul 1 2026, 01:09 PM) Yikes, didn't realize these were NLA. Used one on eBay looks a little rough: https://www.ebay.com/itm/205574449012?_skw=...ABk9SR8i-vurjZw (IMG:style_emoticons/default/laugh.gif) Ya . . . saw that one to. Rough is an understatement especially at that price. Not that desperate. . .yet. (IMG:style_emoticons/default/happy11.gif) There’s gotta be hundreds of thousands of these floating around. They were in so many bugs, busses, and 914’s back in the day they can’t be rare. Note: I do have a very vintage industrial temp gauge that is very “steampunk” if anyone is interested in a trade for something like that. |
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| yeahmag |
Jul 1 2026, 02:56 PM
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#8
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Advanced Member Group: Members Posts: 2,484 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California
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I find the Micro 1000 looks the part AND is temp compensated:
https://www.aircraftspruce.com/catalog/inpa.../CHT_gauges.php |
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