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

UK price (as reviewed): £28.58 inc VAT US price (as reviewed): $40.75 inc VAT Compression fittings are one of those advances in technology that you wonder how you ever did without. In fact you might ...

While we like to think of 2002 as being part of a high-tech age, our beloved internal combustion engine hasn't really changed much in the last 50 years. We're still using pushrods and overhead valves, ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

TEST RUN: Rehau’s James Mullady (left), vice president of sales, U.S. and Canada, and John Bittenbender (middle), engineering manager, assist Erin Holohan Haskell (right), president, HeatingHelp.com, ...

A gasoline piston engine that can dynamically change its compression ratio —that is, the amount by which the piston squeezes the fuel-air mixture in the cylinder—has long been a holy grail of engine ...

Honda might be looking back to early aeronautics in its latest bid to make variable compression engines simpler and sturdier. The engine is designed to take advantage of the simple crank design of ...