You might have heard about high compression ratios, but what exactly are they, and what kind of effect do they have on an ...

Low- And High-Compression Fuel Economy Engines: The Techniques Are About The Same, But The Approach To Each Is Somewhat Different. A.Most stock cylinder heads have factory-cut undercuts of the type ...

Despite its critics and moves toward electrification, the internal combustion engine is not yet dead. Though its design for ...

Horse Powertrain first made waves with a simple but practical idea: let automakers convert their existing EV platforms into hybrids, rather than building new ones from the ground up. Last year, the ...

As we face the end of the internal-combustion era, the straight-six has made an unlikely comeback. Well, unlikely might not be the right word for an engine configuration of such fundamental rightness.

Should you go with a naturally aspirated engine or a turbocharged one? Both have pros and cons, but we think one engine type ...

Engine compression ratios have become a hot topic ...

A.Here you can see locations of sharp-edged material left from factory machining operations. Material removal should be kept to a minimum, since we are dealing with low engine rpm for which enlarged ...