Rated 4.46 out of 5 based on 26 customer ratings
(26 customer reviews)

1975 Porsche 911 Carrera Type 911/83 2.7L MFI Engine

$26,000.00

1975 Porsche 911 Carrera Type 911/83 2.7L MFI Engine

Listing Details

  • Type 911/83 2.7-Liter Flat-Six
  • From RoW 1975 Porsche 911 Carrera 2.7
  • Engine Number: ☆6650218☆
  • Rebuild Completed 12/2025
  • Bosch Mechanical Fuel Injection
  • Cooling Fan & Shroud
  • Air Filter Housing
  • Muffler & Heat Exchangers
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SKU: PX5XS
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1975 Porsche 911 Carrera Type 911/83 2.7L MFI Engine

This is a world-class, highly collectible powertrain. The Type 911/83 is the “Holy Grail” of 2.7L mid-70s Porsche engines because it is mechanically identical to the engine found in the legendary 1973 911 Carrera RS 2.7.

Finding one today, especially with a fresh rebuild completed in late 2025, places this engine in the top tier of the Porsche enthusiast market.


1. Technical Pedigree

  • Type: 911/83 (Magnesium Case).

  • Configuration: 2.7-Liter Air-Cooled Flat-Six.

  • Fueling: Bosch Mechanical Fuel Injection (MFI)—the most desirable and visceral fueling system of the era.

  • Power Output: Factory rated at 210 hp (matching the ’73 RS spec).

  • Provenance: Derived from a Rest of World (RoW) 1975 Carrera. These cars were never officially sold in the US due to emissions, making the MFI variant much rarer than the US-spec K-Jetronic (CIS) versions.

Listing Details

  • Type 911/83 2.7-Liter Flat-Six
  • From RoW 1975 Porsche 911 Carrera 2.7
  • Engine Number: ☆6650218☆
  • Rebuild Completed 12/2025
  • Bosch Mechanical Fuel Injection
  • Cooling Fan & Shroud
  • Air Filter Housing
  • Muffler & Heat Exchangers

2. 2026 Market Valuation (Estimated USD)

Because the 911/83 engine is the correct “numbers-matching” replacement for a missing 1973 RS engine or a high-end 1974-1975 RoW Carrera restoration, its value is astronomical compared to standard 911S engines.


3. Engine Number Authentication

  • Serial Number: ☆6650218☆

    • The “6” indicates a 6-cylinder engine.

    • The “6” (second digit) indicates the 911/83 engine type (Carrera 2.7).

    • The “5” indicates the 1975 model year.

    • The remaining digits (0218) indicate it was the 218th engine produced in that series for that year.

  • Significance: This is a very early production unit for the 1975 model year, likely built in late 1974.


4. 2026 Restoration Details & Maintenance

Since the rebuild was completed in 12/2025, the following technical items are critical for its valuation:

  • MFI Calibration: The Bosch pump must be calibrated to the specific fuel/air curve of the 2.7L engine. If this was done by a specialist like Pacific Fuel Injection or Gus Pfister, the value increases.

  • Magnesium Case Treatment: Being a magnesium case (as opposed to aluminum), it should have been checked for “pulled” head studs. Modern rebuilds typically use Time-Serts or Case Bolts to ensure the studs don’t pull out under heat.

  • Break-in Status: Since the rebuild is brand new, it likely still has “break-in” oil. The first 500 miles are critical—high-zinc oil (like Motul Classic or VR1) is mandatory for the flat-tappet camshafts.


5. Included Components

  • Air Filter Housing: The specific plastic “snorkel” and housing for the MFI stacks is unique and very expensive to source if missing.

  • Cooling Fan & Shroud: Should be the correct 11-blade fan. For a 1975 RoW Carrera, the shroud is typically Red (indicating the high-performance Carrera spec).

  • Heat Exchangers: Ensure they are the thin-flange SSI style or original Leistritz to maintain the correct backpressure for the MFI system.

26 reviews for 1975 Porsche 911 Carrera Type 911/83 2.7L MFI Engine

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