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 ...

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...

READER: We have owned and worked on many John Deere engines using the "pencil" fuel injector. As the engines aged, and we began working on them, we never found a way of checking the compression with a ...

If there's one question that's forever on the lips of car enthusiasts, it's how much horsepower an engine makes. Answering that question is deceptively complicated, however, because of what the term ...

As you may know, an engine's compression ratio is directly linked to its combustion efficiency. All else being equal, higher-compression engines tend to make more power while offering better fuel ...

While the automotive industry is at an important point as an increasing number of buyers gravitate toward EVs, there are still many of us who will want to hold on to combustion power for as long as ...