ACL RACE tri-metal main bearings, RENAULT F4R

ACL RACE tri-metal main bearing sets for F4R engines are made up of 10 bearings.

Find below (click on the image) the tri-metal big end bearings for RENAULT F4R, F7R and F7P engines and the plastigage wires to check the bearings/crankshaft running clearance:

Technical specifications

• Main journal diameter (min/max): 54.785 / 54.795mm
• Main bearing bore diameter (min/max): 58.731 / 58.744mm
• Max thickness: 1.945mm
• Size(s): standard or standard with HX clearance or +0.25 or +0.5mm
• Anti-friction coating: none
• References: 5M7807, 5M7807H-STD, 5M7807HX-STD, 5M7807H-.25, 5M7807H-.50

ACL Race Series tri-metal bearings are manufactured to strict tolerances. CNC machining is carried out to the micron before a metrology check of the diameter, thickness and width of the ACL Race Series tri-metal bearing. This is how ACL Race Series bearings ensure a reliable and consistent fit in your performance engine. ACL Race Series tri-metal bearings are actually made up of 4 layers:

• SAE1010 steel on the outside
• 0.3mm copper alloy
• 0.0001mm nickel
• Copper alloy from 0.013 to 0.018mm

This material strategy, combined with the manufacturing process, makes ACL Race Series tri-metal bearings more resistant to increases in power, torque or engine speed. The compression resistance of ACL Race Series tri-metal bearings brings reliability to your engine, even with turbo or supercharger builds running high boost, or high-revving engines.