Carburetors with vacuum lines are still found on classic vehicles and small-displacement engines — but what is the vacuum ...

Despite its critics and moves toward electrification, the internal combustion engine is not yet dead. Though its design for passenger vehicles may have begun to reach its apex with Mazda’s Skyactiv ...

"No replacement for displacement" was the motto that produced some large powerplants during the exciting muscle car era. Nevertheless, this motto was taken to another dimension in the case of these ...

With all the recent emphasis on electric vehicles, we often overlook the technology that still powers most cars on the road today. The internal combustion engine (ICE) has been at the heart of the ...

Basic engine education is much like basic sex education: There are hundreds of well-written, informative books on the subject but only a handful of the interested people are willing to expend the time ...

The Astron Aerospace H2 Starfire is a clean burning hydrogen and water powered internal combustion engine alternative to battery cell technology. There is very little parasitic power loss with the H2 ...

The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

NOTE: With this issue of HOT ROD, your Shop Series begins a slightly different and more comprehensive approach to the discussion of engine and vehicle basics. In the coming months, you'll find a frank ...

TOKYO — Toyota Motor Corp. and its Japanese carmaking allies Mazda and Subaru are doubling down on the next generation of compact, clean and powerful engines they say will emerge as potent weapons in ...