For an engine to work, a fresh mixture of air and gas has to be able to enter and exit the cylinders. These induction and exhaust processes also need to occur at the correct moments, otherwise the ...

At Circle Track, we're all about helping you do more for yourself. But sometimes that's just not realistic. That's not casting doubts on the intelligence of our readership. Just like your mom, we ...

Explore the 4-valve revolution that maximized cylinder head airflow and set a high-revving benchmark that engine builders ...

Ask any professional racer or engine builder and you'll hear that cylinder-head airflow is the most important factor in achieving the greatest peak horsepower from any engine. For years Pontiac racers ...

Cylinder heads, rocker arms, and valve adjustments are completed while mounting the flywheel housing and oil pan. External components are fitted for a fully assembled engine. #TopEndAssembly #DieselEn ...

Like it or not, cylinder head design is a subject that's very complex, and it's impossible to make it simple. Considering that no single component on an engine affects power output more than the ...

New cylinder head designs are not something you see everyday. Even when something new does come out, it's normally adapted from something else, be it a race head or a more exotic engine. The trickle ...

February 2, 2006 UK-based RCV Engines is best known globally for its range of model aircraft engines but the unveiling yesterday of a prototype 125cc Rotating Cylinder Valve (RCV) scooter engine could ...