Legacy Metrics

1979 Porsche 911 Turbo (Type 930)

9309800531roadGermany
Engine
California-spec 3.3L flat-six turbocharged, Type 930/63
Colour
Light Blue Metallic

A 1979 Porsche 911 Turbo (Type 930) finished in Light Blue Metallic, delivered new to a California physician who retained it for 24 years. One of 806 US-market examples that year, it is fitted with a California-spec 930/63 engine, limited-slip differential, sports seats, and a sunroof. With approximately 11,000 believed-original miles and largely intact original paintwork, it has earned strong results in Porsche Club of America Preservation class concours, and remains one of the better-preserved unrestored examples known.

Ownership

  1. —Auction sale
    Sold US$231,000

    RM Sotheby's catalogue lot →

  2. 1979 → 2003Factory delivery
    Dr. Douglas Cardoza
    full documentation

    First owner, based in Santa Rosa, California. Held the car for roughly 24 years; service records from this entire period accompany the vehicle.

  3. 2003 →Acquisition unknown
    Second owner
    none documentation
  4. Date unknownAcquisition unknown
    Third owner
    none documentation
  5. Date unknownAcquisition unknown
    Fourth owner
    none documentation
  6. Date unknownAcquisition unknown
    Fifth owner (current consignor)
    partial documentation

    Had the engine and gearbox overhauled with new seals by a marque specialist in 2016, documented by receipts. Also changed the interior color during their ownership.

Competition

  1. 2014Porsche Club of America
    Porsche Club of America Concours, Monterey Bay
    243 out of 250 points in Preservation class
  2. 2014
    Carmel-by-the-Sea Concours on the Avenue
    2nd in class

Maintenance & restoration

  1. 2016Engine rebuild
    Porsche marque specialist (unnamed)

    Engine and gearbox were rebuilt and all seals replaced by a Porsche marque specialist; supporting receipts are retained with the car.

    Work commissioned by the current owner.

  2. 2016
    Maintenance

    Interior colour was changed from the original specification.

    Carried out around the same period as the drivetrain rebuild.

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How this record is sourced

Each chassis record is compiled from public auction archives and links to its source material. Ownership, competition and maintenance entries are extracted from those catalogue listings by an LLM, which can make mistakes — please contact us with any corrections. The summary is Legacy Metrics’ own writing; we do not reproduce catalogue text.

“Full” and “partial” documentation labels indicate how well each entry is corroborated in the underlying sources, not an audit of the car’s physical paperwork. Names of recent or living owners are withheld for privacy.