Rated 4.35 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

The Type 911/83 is the “holy grail” of mid-70s Porsche air-cooled engines. While most 1975 Porsche 911s (especially in the US) were saddled with the problematic 2.7L CIS engine and smog equipment, the European-spec Carrera 2.7 MFI used this 911/83 unit—which is essentia

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

The Type 911/83 is the “holy grail” of mid-70s Porsche air-cooled engines. While most 1975 Porsche 911s (especially in the US) were saddled with the problematic 2.7L CIS engine and smog equipment, the European-spec Carrera 2.7 MFI used this 911/83 unit—which is essentially the exact same engine from the legendary 1973 2.7 RS.

In 2026, this engine is a high-value blue-chip asset. It is the bridge between the raw racing engines of the early 70s and the more civilized G-Body cars.


1. Technical Profile: The “RS” Heart

The 911/83 is defined by its Mechanical Fuel Injection (MFI), which provides a visceral throttle response and a metallic “shriek” that modern fuel injection cannot replicate.

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 this engine is the heart of the “Euro Carrera” (of which only about 1,600 were made), prices are astronomical compared to a standard 2.7L.


3. The “Magnesium Case” Warning (2026 Status)

By 2026, the 911/83’s magnesium cases (specifically the 7R casting) are over 50 years old. They face two major issues:

  • Pulled Head Studs: The magnesium expands and contracts at a different rate than the steel studs. If the studs haven’t been replaced with Dilavar or Ayla studs with Timeserts (threaded inserts) in the block, the engine is a “ticking time bomb.”

  • Warping: Magnesium cases tend to “walk” or warp over time. During a rebuild in 2026, line-boring the case to ensure the crankshaft is perfectly centered is a mandatory and expensive step.


4. MFI Maintenance: The “Lost Art”

The Bosch MFI pump is a miniature mechanical masterpiece, effectively a tiny engine inside your engine.

  • The “Check, Measure, Adjust” (CMA) Manual: This is the Bible for the 911/83. You cannot tune this engine by “feel.” It requires specialized tools to measure rack travel and correlate it with throttle plate opening.

  • Modern Fuel Issues: MFI pumps rely on fuel for lubrication. Modern ethanol-heavy fuel can dry out the seals and cause internal corrosion. In 2026, most owners use ethanol-free fuel or high-end stabilizers exclusively.

  • The Thermostat: The MFI pump has its own thermostat that leans/richens the mixture based on engine heat. If this fails, the car will run rich, diluting the oil with gasoline and potentially “washing” the cylinder walls, leading to rapid engine failure.


5. Identification: Real vs. Replica

In 2026, many people build “clone” RS engines using standard 2.7 cases. To verify a real 911/83:

  • Serial Number: Look for the engine type stamped on the block near the fan housing. It must say 911/83.

  • The Pump Number: The Bosch MFI pump should have a part number ending in 019 (the specific pump for the 2.7 RS/Carrera).

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

  1. Rated 4 out of 5

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  2. Rated 4 out of 5

    Valentina Suárez (verified owner)

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  4. Rated 5 out of 5

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  24. Rated 5 out of 5

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    Ordered a Porsche 4.0 flat six engine for my 718 GT4 from genuinecarpartsforsale. The naturally aspirated masterpiece arrived perfectly with zero oil leaks. My Porsche screams to 8000 rpm again and I couldn’t be happier.

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  26. Rated 5 out of 5

    Samira Al-Hashemi (verified owner)

    El motor bóxer de 3.6 litros para mi Porsche 993 Carrera S llegó perfecto sin ningún defecto. Sin juego en los componentes internos y la potencia es increíble en toda la curva de revoluciones. genuinecarpartsforsale entregó exactamente lo que prometió en el anuncio original.

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