ACL - Main bearing set for Renault F4R R3, version : 0.50

The ACL Race Series main bearing shells with repair rib 0.50 mm M7819H-050 are specially designed for Renault F4R R3 engines that have undergone crankshaft grinding. They ensure a perfect fit, which is essential in competition to maintain reliability and performance.

Manufactured from high-quality tri-metal alloy (hardened steel, copper, lead/tin), these bearings ensure excellent heat dissipation, maximum pressure resistance and significantly reduced friction, even at very high revolutions per minute.

Why choose ACL Race bearings with a 0.50 mm repair rib?

• Specially designed for rebored crankshafts (repair rib -0.50 mm)
• Controlled tolerances for micrometric adjustment
• Perfectly suited to extreme use: rally, endurance, track day, hill climb
• Compatible with highly stressed F4R engine preparations

Technical specifications:

• Supplier reference: 5M7819H-050
• Tolerance: Repair -0.50 mm (undersize)
• Material: Tri-metal alloy (steel, copper, lead/tin)
• Finish: Motorsport specification, high-precision machining
• Use: Prepared engine, competition, motor sport

Key advantages:

• Suitable for ground crankshafts
• Improved mechanical strength at high revolutions per minute
• Improved oiling and heat dissipation
• Increased durability under heavy loads
  
• Precise fit for maximum performance

Dimensions:

• Maximum overall length: 19.05 mm

• Maximum axle size: 51.495 mm
  

• Maximum tunnel size: 51.465 mm

• Maximum vertical oil clearance: 54.035 mm
  

• Maximum crown wall: 54.000 mm
  

• Minimum wheel-drive assembly size: 0.063 mm
  

• Minimum tunnel size: 0.025 mm
  

• Minimum vertical oil clearance: 1.270 mm

Caution: Clearances must be checked with a feeler gauge or micrometer to ensure correct installation.

Compatibility:

• Engine: Renault Sport F4R R3