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brant |
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#1
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914 Wizard ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 11,642 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains ![]() ![]() ![]() |
Hi everyone
I have a gauge that I got from Slits to use in my street car I still have not installed it, and its been a few years now my 1st question: -what can you tell me about this gauge? is it 1972 or 1973? silver dot so maybe a really early 73 appearance gauge? I'm not selling this one, just curious and for my own use 2nd questions: -how do I determine if my current senders, or which senders will be needed. Currently I have a -6 fuel/oil temp gauge in the dash its wired to the correct sender in the taco plate it was 20 years ago... so I'll need to pull the sender to find out which model number it is. any way I can tell from the numbers/model of gauge which sender is correct to use with this one ? the fuel side of this "new to me gauge." Its a 914/4 gauge, with a stock 914 fuel tank and sender. I'm betting it is within the correct 90 -0 ohm range since it likely use the stock sender in the fuel tank. How can I verify that, or what do the experts and charts indicate as confirmation? thank you in advance everyone! brant Attached thumbnail(s) ![]() ![]() ![]() |
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brant |
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#2
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914 Wizard ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 11,642 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains ![]() ![]() ![]() |
Tony,
I just got the thing from the garage and took another look I can see that the screws on the back have all been molested... driver marks from a poor fitting screw driver. how do you recommend I tackle this? to find the correct range oil sender to match my gauge brant |
Retroracer |
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#3
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Senior Member ![]() ![]() ![]() Group: Members Posts: 617 Joined: 7-July 13 From: Bend OR Member No.: 16,100 Region Association: Pacific Northwest ![]() ![]() |
Tony, I just got the thing from the garage and took another look I can see that the screws on the back have all been molested... driver marks from a poor fitting screw driver. how do you recommend I tackle this? to find the correct range oil sender to match my gauge brant One approach is to get the sender you think is right, hook it up with the gauge on a bench and do a temp check - room temp and boiling water at a minimum. All of these sensors work by changing their electrical resistance as temp varies; I have access to a programmable resistance box, so I can use that as a "dummy" sender to see what any target gauge is ideally expecting as a sender, so - for instance - a 911 combo gauge expecting a 901.641.632.00 sender would look like this: ![]() ..where the horizontal axis is indicated temperature (degC), the vertical scale is "ideal" sender resistance (ohms). Data for 2 different gauges plotted. Note the two "identical" gauges differ a bit at low temps, but are consistent where it matters. So I can characterize a gauge: The REAL trick is uncovering the specs of the various senders we know and love to match the above type of plot. VDO publish some data, but it would be great to find a comprehensive source of part number vs. transfer function over temp. Anyone...? - Tony |
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