Tri-metal main bearings, SUZUKI 1.6 125hp M16A

The tri-metal main bearing sets ACL and KING RACING for the SUZUKI 1.6 125hp M16A engine each contain 10 bearing shells.

Technical specification

• Main journal diameter (min/max): 51.982 / 52.000mm
• Main bearing housing bore (min/max): 56.000 / 56.018mm
• Max thickness: 2.000mm
• Sizes: standard, HX, +0.025, +0.25
• Anti-friction coating: none
• References: 5M8443H, 5M8443H-STD, 5M8443HHX-STD, 5M8443H-.025, 5M8443H-.25

ACL Race Series tri-metal bearings are manufactured to strict tolerances. CNC machining works to the micron, before metrological inspection of the diameter, thickness and width of every ACL Race Series tri-metal bearing. ACL Race Series bearings therefore give a reliable and consistent fit in your performance engine. An ACL Race Series tri-metal bearing is in fact made up of 4 layers:

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

This choice of materials, combined with the manufacturing processes, makes ACL Race Series tri-metal bearings more resistant to increases in power, torque and engine speed. Their compression strength brings reliability to your engine even with heavily boosted turbo or supercharger builds, or high-revving race engines.

Technical specification

• Main bearing housing bore (min/max): 54.008 / 56.017mm
• Max thickness: 1.998mm
• Sizes: standard, +0.026
• Anti-friction coating: none
• References: MB5727XP, MB5727XP.026

KING RACING has designed and manufactured high-performance bearings since 1960. Beyond its production machinery, King Racing uses simulation software to analyse the thermodynamics, dynamics and elastohydrodynamics of its bearings. KING RACING tri-metal bearings are produced in pMax Black, a tri-metal alloy 24% stronger than any existing tri-metal bearing.

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

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