In circle track racing the Late Model Stock classes have a now-classic set of rules that mostly hasn't changed in more than a dozen years. The heads must come from the manufacturer, typically the ...

At its most basic level, an engine is an air pump. Internal combustion engines breathe fresh air and expel wasted exhaust gases to make power. Something has to tell those intake and exhaust valves ...

Last month's "How It Works" story gave you the basics of the four-stroke cycle, describing the motion of the intake and exhaust valves in relation to the piston moving up and down in the cylinder.

In the pre-LS era, a typical small-block-powered street car would rev willingly to around 5,000 rpm. You could assemble a cam package for it—even using heavy components—and you probably wouldn't have ...

A camshaft can be a huge performance component for an engine-many people know this. Cam lobe design is often regarded as a black art. Many who have mastered it prefer it that way to keep people from ...

Hyundai has issued a safety recall that applies it over 4,000 units of the Palisade built during the 2024 model year. The SUVs included in the campaign could experience a valve spring failure, a ...

THOMPSON, Conn. — Jacobs Vehicle Systems on Nov. 1 showcased new cylinder deactivation and active decompression systems while launching the third iteration of its demonstration truck to highlight the ...

This is a preview. Log in through your library . Abstract ABSTRACT In this paper, a simultaneous design and development work for a diesel engine valvetrain system is presented. The rocker arm is one ...

One way to improve diesel engine performance and to reduce emissions is improving power density and combustion cycle efficiency. It can be done by increasing combustion pressure and engine speed ...

BLOOMFIELD, Connecticut—Jacobs Vehicle Systems has begun demonstrating two new technologies designed to help fleets and OEMs meet federal 2027 emissions targets. Just outside of Hartford, Connecticut, ...

When Ford introduced its newest 7.3-liter Godzilla V8 for the 2020 Ford Super Duty, it caused quite a stir for being the most powerful gas engine in Ford's heavy-duty truck fleet. However, the ...

The internal combustion engine, despite being a century-and-a-half old, is still an impressive marvel of engineering. There are several variations of engine design that have been experimented with ...