ACL Race rod bearings for Porsche 911 / 930

ACL Race rod bearings are tri-metal engine bearings designed for reliable operation at higher RPM conditions. The set is intended for connecting rod bearings.

The construction combines a high-strength overlay plate, hardened steel backs and increased crush for improved bearing retention in the housing.

• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs for improved support of the bearing lining and bearing retention in the housing
• Elimination of flash plating on the back for improved heat transfer and increased grip between the bearing and its housing
• Increased eccentricity to compensate for bore distortion at high RPM and assist in forming hydrodynamic oil films
• Tight, consistent wall tolerances to help maintain consistent clearances

Suitable for: Porsche 911 930 / I.

Engines: 911, 930 (911.52, 911.53, 911.63, 911.57, 911.67, 911.51, 911.61, 911.91, 911.96, 911.41, 911.46, 911.92, 911.97, 911.43, 911.48, 911.81, 911.82, 911.84, 911.85, 911.86, 911.89, 911.90, 911.94, 911.99 …). Please check your vehicle’s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.

Sizes

STD is the standard size for an unground crankshaft. Undersizes (−0.25 mm, −0.50 mm …) are for a reground crank, and “+0.025 mm clearance” (X) is for highly stressed engines. Your machine shop chooses the size after measuring.