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Thread: 1974 HQ Regulator

  1. #1

    1974 HQ Regulator

    Can anyone confirm confidently if 74 HQ's still had external regulator or had changed to internal

  2. #2
    Leadfoot buickzz's Avatar
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    Others will check and advise but i believe that they are external, mounted on the radiator support panel. (Mine is and the harness is original, out of a HQ)

  3. #3
    Sandman Guru
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    I can't remember for certain but I think most HQ were external reg Bosch. There were some internal reg Lucas alternators around at the time, possibly only used in higher current alternator applications eg Statesman with A/C. Dr Terry will remember better if he sees this.

  4. #4
    Night Rider Vombil's Avatar
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    both my late 74 are external
    BQZ

  5. #5
    Cheers guys

  6. #6
    external

  7. #7
    Sandman Guru
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    I just checked, it appears to be external for both Bosch and Lucas. Bosch uses a double contact vibrating voltage regulator. Lucus uses a semi-sealed solid state transistor voltage regulator.
    However the HQ parts catalogue shows an internally regulated Bosch unit.

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