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51 Champion temp gage question

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  • 51 Champion temp gage question

    Good evening. My 51 Champion is not overheating (finally realized to use a meat thermometer in the neck of the radiator to be sure). I overcame earlier heating/cooling problems: new 180 thermostat, new water pump, new hoses, belt. Reads 165 with the thermometer. Heater core repaired, new defroster core.

    I troubleshot the old temp gage, which indicated bad (test light lit on the Ign screw but not the screw for the sending unit, and needle would not rise when I grounded the sending unit wire). Swapped in a branch new gage, which does rise when I ground the wire coming from the sending unit. To rule out the wire from the sending unit to the gage being bad, I ran a jumper wire with alligator clips from the sending unit on the engine to the sending unit post on the back of the gage did not get any reading. Am I nuts, or is the only thing left the sending unit being bad?

    Also, how hot should a 6-cyl Champion's defroster get? It obviously has a smaller core than the one in the floor, so maybe it's only supposed to get lukewarm and not really hot?
    Heater gets very, very toasty.

    Regards,
    Clarence in Virginia Beach

  • #2
    Brad Johnson,
    SDC since 1975, ASC since 1990
    Pine Grove Mills, Pa.
    '33 Rockne 10, '51 Commander Starlight. '53 Commander Starlight
    '56 Sky Hawk in process

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    • #3
      Sounds good. With the heater working REALLY well, I had almost come to the conclusion that the defroster isn't supposed to get as hot (or else it would have had a bigger heater core of its own).
      Thanks, Brad.

      Regards,
      Clarence

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