1974 Porsche 911 RSR 3.2L Flat-Six Racing Engine | Motorsport M911 Crankcase | Bosch Mechanical Fuel Injection

Offered for sale is an exceptionally rare 1974 Porsche 911 RSR flat-six racing engine, originally built for a 1974 Porsche 911 3.0L RSR and professionally upgraded with 3.2L pistons and cylinders. This genuine motorsport engine is based on the highly desirable M911 aluminum RSR crankcase, making it an outstanding choice for collectors, historic racing teams, and Porsche restoration specialists.

The engine has been rebuilt using premium performance components while maintaining the authentic RSR racing specifications. It features a rebuilt Bosch mechanical fuel injection (MFI) pump, high-butterfly intake system, twin-plug ignition, magnesium oil filter housing, and numerous upgraded internal components for improved reliability and performance.

Engine Specifications

• Genuine Porsche Flat-Six Racing Engine
• Originally Built for a 1974 Porsche 911 3.0L RSR
• Authentic M911 Aluminum RSR Crankcase
• Upgraded to 3.2L Displacement
• Bosch Mechanical Fuel Injection (MFI)
• High-Butterfly Intake System
• Twin-Plug Ignition System
• Magnesium Oil Filter Housing
• Fiberglass Engine Shroud
• Motorsport-Specific Engine Configuration

Engine Rebuild Highlights

• New 3.2L Pistons and Cylinders
• Rebuilt Bosch Mechanical Fuel Injection Pump
• New Main Bearings
• New Countershaft Bearings
• Balanced Connecting Rods
• New Rod Bearings
• ARP Connecting Rod Bolts
• New 3.2L Carrera Oil Pump
• All 24 Head Studs Replaced
• Professionally Rebuilt for Reliability and Performance

Performance Features

• Genuine Porsche Motorsport M911 Crankcase
• RSR-Specific Head Bolt Spacing
• Lightweight Aluminum Racing Engine
• High-Performance Mechanical Fuel Injection
• High-Butterfly Racing Intake
• Twin-Plug Combustion System
• Improved Oiling with Carrera Oil Pump
• Built for Historic Motorsport and High-Performance Applications

Why Choose This Porsche 911 RSR Engine?

• Genuine Porsche M911 RSR racing engine
• Originally built for the legendary 1974 Porsche 911 RSR
• Upgraded to 3.2L with premium internal components
• Rebuilt Bosch mechanical fuel injection system
• Twin-plug ignition and high-butterfly intake
• Professionally rebuilt with upgraded bearings, ARP hardware, and Carrera oil pump
• Rare collector-grade engine with exceptional historical significance

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