If you're diving into the world of high-performance engines, you’ll want to pay attention to these ACL Race Series Engine Bearings. They're not just another set of bearings; they’re designed with a serious focus on durability and performance. Whether you're revving up your 4, 6, or 8-cylinder beast, these bearings are built to handle the heat, literally.

What makes them stand out?

• First off, they've got a high-strength overlay plate that’s thinner than you’d expect. This isn’t just for show; it really helps with fatigue resistance when you’re pushing your engine to its limits.
• Then there’s the hardened steel backs on the rod bearings. This feature does wonders for supporting the bearing lining and keeps everything snug in the housing, so you won’t have to worry about them slipping out.
• The increased crush helps lock them in place even better, giving you peace of mind when the RPMs start climbing.
• Forget about flash plating on the back; that’s been eliminated to enhance heat transfer. This means better cooling and grip between the bearings and the housing—essential when you’re running high speeds.
• They’ve also increased eccentricity to tackle any bore distortion at high RPMs, which is crucial for forming those hydrodynamic oil films that keep everything lubricated.
• With 3/4 grooved main bearings, you’re optimizing the load-carrying surface area and ensuring oil flows smoothly to the conrod bearings. This is a game-changer for performance.
• And let’s talk tolerances—these are tight and consistent, which means you can maintain clearances without any guesswork.
• Lastly, the enlarged ID chamfers on the edges are perfect for accommodating those larger fillet radii found on performance crankshafts.

Here’s the nitty-gritty:

• Sizes: STD, .025, .25
• Oil Clearance: Standard
• Half Type: Identical Halves
• Material: Tri-metal Hardened Steel Backs
• Min Standard Shaft Size: 2.4403 in / 61.984 mm
• Max Standard Shaft Size: 2.441 in / 62.001 mm
• Min Standard Tunnel Size: 2.5992 in / 66.02 mm
• Max Standard Tunnel Size: 2.5998 in / 66.01 mm
• Max Wall at Crown: 0.0789 in / 2.004 mm
• Max Overall Length: 0.7874 in / 20 mm

What vehicles do they fit?

• Lexus GS300 (1993-2006)
• Lexus SC300 (1992-2000)
• Toyota Supra (1986-2002) 7M8103H-.025 ACL Toyota/Lexus 2JZGE/2JZGTE 3.0L 0.025 Oversized High Performance Main Bearing Set

So, if you're serious about squeezing every bit of performance from your engine, these bearings are a solid choice. They’re built to last and designed for those who really push their rides. You’ll appreciate the difference when you hit that throttle.