If you're looking to give your engine the kind of bearings it deserves, check out these ACL Race Series Engine Bearings. They’re not your average bearings; they’re built to handle the heat and stress of high RPMs, making them a solid choice for anyone pushing their ride to the limit. Whether you’re rocking a 4, 6, or 8-cylinder setup, these bearings have got you covered.

What Makes Them Stand Out?

• First off, the overlay plate is strong yet thin, which means better fatigue resistance. No one wants their bearings giving out mid-race, right?
• These babies come with hardened steel backs on all rod bearings. This not only supports the lining but also keeps everything snug in the housing. Trust me, you want that extra grip.
• They’ve increased the crush for better retention, so you won’t have to worry about them shifting around when the engine’s revving.
• They’ve ditched the flash plating on the backs, which helps with heat transfer. That means they stay cooler longer and grip better.
• With increased eccentricity, these bearings can handle bore distortion when you’re pushing high RPMs, making sure that hydrodynamic oil films form just right.
• The 3/4 grooved main bearings optimize the load carrying surface area, ensuring oil flows smoothly to the conrod bearings.
• And let’s not forget the tight wall tolerances. They help you maintain consistent clearances, which is crucial for performance.
• For those running performance crankshafts, the enlarged ID chamfers on the edges are a nice touch, accommodating those larger fillet radii.

Specifications You Should Know:

• Sizes available: Std-0, Std-1, Std-2, Std-3, Std-4
• Oil clearance is standard and graded, so you can pick what fits your setup best.
• Half type: Upper & Lower
• Material: Tri-metal with hardened steel backs
• Min Std Shaft Size: 2.5571in / 64.951mm
• Max Std Shaft Size: 2.5581in / 64.975mm
• Min Std Tunnel Size: 2.7556in / 69.993mm
• Max Std Tunnel Size: 2.7566in / 70.017mm
• Max Wall at Crown varies depending on size; for Std-0, it’s 2.500-2.504mm, and goes up to Std-4 at 2.520-2.524mm.
• Max Overall Length: 0.7874in / 20.00mm

Fitment: These bearings are a perfect fit for the Nissan GTR from 2009 to 2021, specifically for the 1M2505H-STD-2 version 3 block. If you’re serious about performance, you’ll want to make sure you’re using the right parts.

In short, if you want to keep your engine running smooth and strong, these ACL Race Series Engine Bearings are worth considering. They’re built for the long haul and designed for those who really know what they’re doing under the hood.