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Thread: Oil temp gauge not working: Is '66 gauge compatible with '70 2.2 sending unit?

  1. 06-05-2015, 09:04 PM #1
    eaton
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    Oil temp gauge not working: Is '66 gauge compatible with '70 2.2 sending unit?

    I've finally got all the gauges working in my '66 912 with a 2.2 transplant, except the oil temp gauge. When I start the car, the temp gauge immediately maxes out. Does anyone know if the gauge and sending units are incompatible?

    Joe
    '66 912 with a 2.2
    '62 Lotus Seven S2
    '66 Lotus Elan
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  2. 06-05-2015, 10:00 PM #2
    eaton
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    Further research tells me that no, they are not compatible. Anyone have a used SWB temp sending unit they want to part with?
    '66 912 with a 2.2
    '62 Lotus Seven S2
    '66 Lotus Elan
    '63 Karmann Ghia convertible
    '76 Alfa Spider
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  3. 06-06-2015, 11:17 AM #3
    Veronica87911
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    The sending unit needs to match the gauge, not the engine. I had the same problem; 72 911T with 77 2.7 engine. It took a while, now the gauge reads normal with the correct sender.
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