BRM Announces Cylinder Hones for Diesel Engine Rebuilds; Flexible Hones Deglaze Cylinder Walls, Improve Surface Finish, and Optimize Lubrication

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Brush Research Manufacturing (BRM), maker of engine hones and automotive brushes, announces cylinder hones for rebuilding diesel engines. Diesel Power magazine publishes article explaining how BRM Flex-Hone® tool deglazes cylinder walls in International Harvester 7.3L IDI engine, improving oil retention and piston ring seating and sealing.

Flex-Hone® Tools for Diesel Engines

Flex-Hone® Tools for Diesel Engines

The Flex-Hone® is a flexible, resilient honing tool that breaks the glaze on cylinder walls and imparts an ideal surface finish.

Brush Research Manufacturing (BRM), maker of flexible hones and a full line of industrial brushes, is announcing cylinder honing tools for overhauling diesel engines. The Flex-Hone® is a flexible, resilient honing tool that breaks the glaze on cylinder walls. Left unbroken, an overly smooth surface finish can impede lubrication and increase friction.

After engine cylinders are manufactured, their walls or liners are surface-finished to impart a series of oil-retaining grooves or valleys that promote oil retention. During engine break-in, the reciprocating movement of the pistons removes peaks and leaves a uniform series of ridges. Over time, however, the up-and-down movement of the pistons creates a polish or glaze on the cylinder walls.

Diesel Engines and Glaze Breaker Hones

In an article entitled Rebuilding International’s 7.3L IDI Engine Heads and Crank, Diesel Power magazine explained how an engine builder used the BRM Flex-Hone® to break this glaze and improve the surface finish of cylinder walls. Made by International Harvester, the eight-cylinder diesel powerplant was used in Ford F-Series pickups, Ford E-Series vans, school buses, and commercial vehicles.

As the article’s author explained, only one of the eight cylinders had “some surface rust” with the other seven free of “major scratches or blemishes”. While a machine shop cleaned the crankshaft, resurfaced the heads, and completed a valve job, the do-it-yourself (DIY) mechanic used a flexible honing tool from BRM in a handheld electric drill.

How to Use Flexible Honing Tools

With the flexible hone lubricated generously and spinning at the recommended RPMs, the diesel mechanic stroked the cylinder according to the recommendations in the Flex-Hone® Resource Guide. As BRM’s free, downloadable technical book explains, ball hones are low RPM tools that are self-aligning to the bore, self-centering, and self-compensating for wear.

When cylinder honing is complete, Flex-Hone® customers such as Caterpillar use warm soapy water for cleanup. In addition to high-quality brush tools, BRM supplies high-quality cylinder wash brushes made of 6-12 Nylon in diameters ranging from 3.5-in to 6.5-in. After cleaning an engine block, remember to lubricate metal surfaces properly.

About Brush Research Manufacturing

Brush Research Manufacturing (BRM), makers of flexible honing tools and a full line of industrial brushes, is located in Los Angeles, California. Since 1958, BRM has been solving difficult finishing problems with brushing technology. BRM’s Flex-Hone® tool is the standard against which all other surface finishing tools are compared.

In addition to brush tools, Flex-Hone® oil, and cylinder wash brushes, BRM supplies injector brushes, seat cleaning brushes, plunger bore cleaners, and O-ring groove cleaners. Visit the BRM website for information about diesel tools designed for Caterpillar, Cummins Group, and Detroit Diesel.

Media Contact:

Heather Jones
Director of Marketing
Brush Research Manufacturing Co. Inc.
4642 Floral Drive
Los Angeles, CA 90022
Ph: (323) 261-2193

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Heather Jones
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