ACL - Main bearing set for Renault F4R R3, version : 0.25

ACL Race Series bearings with a 0.25 mm repair rib are designed for Renault F4R R3 engines with a slightly ground crankshaft. Their tri-metal alloy composition (hardened steel, copper, lead/tin) makes them extremely robust and able to withstand the extreme stresses encountered in competition use.

Designed for even oiling, reduced friction and efficient heat dissipation, these bearings ensure maximum low-end engine life, even at high revolutions per minute.

Why choose ACL bearings with a 0.25 mm rib?

• Ideal for engines that have been lightly ground after crankshaft wear
  
• Perfect heat resistance for racing applications
  
• Motorsport quality for demanding prepared engines
  
• Strict compliance with factory tolerances for surprise-free assembly
  

Technical specifications :

• Supplier reference: ACL-5M7819H-025
  
• Tolerance: Repair -0.25 mm
  
• Material: Tri-metal alloy (steel + copper + lead/tin)
  
• Finish : Competition specification, high manufacturing precision
  
• Application: Rally, trackday, prepared engines, endurance
  

Key benefits :

• Perfect for crankshafts ground to -0.25 mm
  
• Excellent heat and pressure resistance
  
• Controlled clearance for optimum oiling
  
• Durable material in the face of wear
  
• Adapted to the constraints of Renault sports engines
  

Dimensions :

Maximum overall length: 19.05 mm

Maximum axle size: 51.745 mm

Maximum tunnel size: 51.715 mm

Max vertical oil clearance: 54.035 mm

Max wall to crown: 54,000 mm

Minimum axle size: 0.063 mm

Minimum tunnel size: 0.025 mm

Minimum vertical oil clearance: 1.145 mm

Warning: These values are given as a guide only. It is imperative to check the clearance using a plastigauge or micrometer during assembly.

Compatibility:

RENAULT

-F4R R3