King Race Bearings U-Groove - Engine Builder Magazine

King Race Bearings U-Groove

In racing main bearings, the groove’s shape and size perform a vital role. The groove should be wide enough to allow sufficient oil flow, but narrow enough to maximize the working surface.

In today’s race engines, contrary to popular belief, there is significant load on the upper main bearing shells. The extra load is a product of the inertia forces generated by high RPM. The extra force demands higher load capacity.

In response, King Racing’s TechLab developed U-Groove – a unique 90-degree oil groove shape. U-Groove increases bearing load capacity by expanding the surface area, while keeping oil flow capacity intact.

King Engine Bearings Inc.
Phone: 1-800-772-3670Fax: 973-857-3228Contact: Limor Neeman Karpatkin

You May Also Like

AMSOIL Marine Engine Oil Now in Gallons

This new package size offers added convenience for owners of boats with larger sumps.

AMSOIL marine oil

AMSOIL Marine Engine Oil is engineered for superior performance and protection in marine applications, and it is now available in 1-gallon containers. This new package size offers added convenience for owners of boats with larger sumps.   

AMSOIL Marine Engine Oil is formulated with robust anti-wear additives to help reduce wear in metal-to-metal contact regions and guard against compression loss. It provides excellent shear stability and delivers a consistent lubricating film that helps protect engine components against the heat and stress of high-rpm operation. Fortified with potent rust inhibitors to prevent rust and corrosion, AMSOIL Marine Engine Oil protects engines during use and during inactivity or long-term storage. 

Holley Terminator X Max EFI Kit for Godzilla Engines

This Terminator X Max EFI kit for Godzilla engines is latest in Holley’s growing portfolio of engine swap solutions.

Holley Terminator EFI
Cometic Duramax Top End Gasket Kit

Cometic’s Duramax gasket kit includes: 4.130″ bore, .047″ MLX cylinder head gaskets.

Cometic Duramax gaskets
ACL Oil Pump Catalog

ACL RACE Series oil pumps are designed with high output and high volume capabilities.

Race Gas Diesel Performance Plus

Race Gas Diesel focuses specifically on cetane, oxygen and lubrication.

race gas diesel

Other Posts

Big 3 Racing’s ProCharged 540 cid Big Block Chevy Engine

There’s just something about a badass wagon that hits different, and Chuck Stefanski of Big 3 Racing definitely has a badass wagon. The drag-and-drive build was completed in time for Sick Week 2024 where we caught up with Chuck to get the details of the car’s wicked ProCharged 540 cid big block Chevy engine for

Big Block Chevy engine
B&B Performance Big Block Chevy Intake Manifold Spacers

The spacer kit includes end rails and are available for either rectangular port or oval port heads.

intake spacer
Victory 1 Adds CrN Valve Coating

Chromium Nitride (CrN) coating is exceptionally effective in high-stress racing applications as it increases hardness and improves lubricity.

Victory 1 valve coatings
DRZA Auto is a JDM and Nissan Playground

We first spoke to Derek and Rita Cho-Sam back in 2020 for our Engine of the Week series, and quickly came to realize that their shop, DRZA Auto, did some awesome work on Nissan cars and engines. While DRZA will take on other JDM work, the Nissan stuff is where Derek shines as a master

DRZA Auto