FIAT Coupe T16, Lancia Delta HF II 2.0 16V Turbo Tri-metal big end bearings

The tri-metal big end bearing sets ACL RACE and KING RACING for FIAT LANCIA 2.0 16V Turbo engines are made up of 8 bearings.

Technical specifications

• Crank pin diameter (min/max): / mm
• Big end bore diameter (min/max): / mm
• Max thickness: mm
• Size(s): standard, or standard with HX clearance, or +0.025, or +0.25mm
• Anti-friction treatment: none
• References: 4B2904 , 4B2904H-STD, 4B2904HX-STD, 4B2904H-.025, 4B2904H-.25

The 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 way, 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
• Copper alloy, 0.3mm
• Nickel, 0.0001mm
• Copper alloy, 0.013 to 0.018mm

This material strategy, combined with the manufacturing processes, makes the ACL Race Series tri-metal bearings more resistant to increases in power, torque or engine speed. The compressive strength of the ACL Race Series tri-metal bearings brings reliability to your engine, even with heavily boosted turbo or supercharger builds, or high-revving, high-performance engines.

Technical specifications

• Crank pin diameter (min/max): 49.959 / 49.975mm
• Big end bore diameter (min/max): 51.979 / 53.914mm
• Max thickness: 1.536mm
• Size(s): standard, or standard with HX clearance, or +0.026
• Anti-friction treatment: none
• References: CR4601 , CR4601XP , CR4601XP STDX , CR4601XP.026

Since 1960, KING RACING has designed and manufactured high-performance, high-quality bearings. Beyond its ultra-high-performance production machinery, King Racing relies on simulation software to analyse the thermodynamics, dynamics and elasto-hydrodynamics of its bearings. KING RACING tri-metal bearings are made in pMax Black, a tri-metal alloy 24% more resistant than any other tri-metal bearing on the market.

KING RACING bearings are made up of 3 to 4 layers (depending on the application):

Outer: steel Middle: lead bronze Inner: babbitt with a high copper content Anti-friction treatment containing lubricant and ceramic additives