The 2025 Darton Archery Sequel ST2 introduced us to two revolutionary tuning features that made it easier to adjust cam lean ...

If there's an elusive animal in the amateur performance world, then degreeing a cam is it. Few know how to do it, and even fewer understand the benefits. If you're following our 347 build from the ...

This diagram shows the major cam events through one full cylinder cycle (two crank revolutions or 720 degrees), beginning at TDC firing. The exhaust lobe and valvetrain is closer to the front, and ...

Eventually this trickled down to GM's incorporation of this technology into the Gen IV 6.2L L92 Escalade motor for the 2007 model year. GM's design placed a cam phaser on the face of the cam, which ...

For years, beltdriven timing drives have been the accepted standard in NASCAR Nextel Cup racing. The same holds true in the Busch Series and Truck Series as well as other top touring racing series.

A cam phaser is a sprocket which adjusts the position of an engine’s camshaft in relation to its crankshaft and is tuned with a computer-controlled servo. Camshafts control the timing of engine intake ...

A flexible concept for fully continuous variable cam timing (VCT) is presented. The system has been introduced in volume production for both intake and exhaust phasing applications. This paper ...

When rebuilding an engine, there are multitudes of parts to remove, clean, inspect, and potentially replace. A surprising number can often be reused, including the brain of the engine: the camshaft.

Variable valve timing isn’t necessarily a new idea, but it is new to BMW motorcycles. With a freshly designed 1,254 cc two-cylinder flat engine, VVT is arriving in BMW bikes for the first time with an ...

Some owners of 2006-08 RAV4 trucks with 2GR-FE V6 engines may come into your store with the check engine light on. On initial investigation, you may find one or more variable valve timing trouble ...

Automatic variation of internal combustion engine valve timing in response to load and speed is an effective technique for reducing emission of oxides of nitrogen and unburned hydrocarbons. The ...