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Understanding Anti-Polishing Rings (APR) in Cummins ISX Engines: Function, Benefits, and Installation
What Is an Anti-Polishing Ring (APR)? An Anti-Polishing Ring (APR)—also known by various names such as: Carbon scraper ring Piston cleaning ring Bore polishing ring —is a precision-engineered ring inserted at the top of a diesel engine’s cylinder liner. In Cummins ISX engines, this ring is placed in an anti-bore groove near the top of […]
A Guide to Overhaul Duramax LB7 Injectors
The Duramax engine is one of the finest ever to have been made for pickup trucks. But even the best can have a few faults. The original Duramax engine that rolled out back in 2001 and every variant that rolled out in the subsequent three years have a serious flaw. The fuel injectors are not […]
Sneak A Peek at the John Deere 13.5L Power-Tech PSX 6135
The John Deere Power-Tech PSX 6135HFC95 is an inline six-cylinder 13.5L (824ci) diesel engine capable of generating 617 horsepower at 1,900 rpm and a torque of 1,962 ft-lbs at 1,600 rpm. With a 5.20×6.50” bore and stroke, single overhead camshaft, valve train with four valves per cylinder, a compression ratio of 15:3:1, a sequential fixed […]
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