If you're serious about performance, you know that the engine bearings can make or break your ride. That's where the ACL Race Series Engine Bearings come into play. These aren't just any bearings; they’re designed specifically for those of us who push our engines to the limit—think high RPMs and demanding conditions. Whether you’re rocking a 4, 6, or 8-cylinder setup, these bearings are engineered to handle the heat and keep your engine running smoothly.

What really sets these bearings apart is the unique blend of design and metallurgy. The high-strength overlay plate is thinner, which might sound counterintuitive, but trust me, it actually improves fatigue resistance. That’s crucial when you’re pushing your engine hard. Plus, the hardened steel backs on all rod bearings give you the support you need, ensuring that the bearing lining stays put and doesn’t wander off during those intense drives.

One of the standout features is the increased crush, which means better retention of the bearings in their housing. No one wants to deal with a loose bearing when you're trying to make a pass on the track. And forget about flash plating on the backs of the bearings; this design choice enhances heat transfer, so your bearings stay cooler and more efficient under pressure.

But wait, there’s more. The increased eccentricity is a game-changer for high RPM situations, helping to counteract any bore distortion and aiding in the formation of those all-important hydrodynamic oil films. And if you’re concerned about oil flow, the 3/4 grooved main bearings optimize the load-carrying surface area, ensuring that oil gets to where it’s needed most—your conrod bearings.

When it comes to tolerances, these bearings are tight and consistent, which is exactly what you want to maintain those critical clearances. And for those of you running performance crankshafts, the enlarged ID chamfers on the bearing edges accommodate larger fillet radii without a hitch.

In terms of specs, these bearings come in standard sizes, .025, and .25, with a standard oil clearance. They’re made from tri-metal with hardened steel backs, and they fit a variety of applications, including:

• Infiniti M35 (2006-2010)
• Infiniti M45 (2006-2010)
• Infiniti Q45 (2002-2006)
• Nissan Armada (2004-2008)
• Nissan GTR (2009-2021)

So if you’re looking to upgrade your engine’s performance, these ACL Race Series Engine Bearings are worth considering. They’re built for the real world, with all the features that serious drivers need to keep their engines in peak condition. Trust me, you’ll feel the difference.