We recently covered how Nissan scored an acknowledgment from J.D. Power in the 2025 US Initial Quality Survey, with the maker ...

How to Calculate Compression Ratio from Scratch As an example, let’s calculate the CR for a popular big-block Chevy application.

We checked the cranking cylinder pressure on several modified small-blocks >> and discovered an interesting correlation between soggy low-speed performance and low-cranking cylinder pressure.

In simple terms the high-compression cylinder, when the exhaust valve opens at BDC, is only dumping 2.5 percent of its original pressure whereas the 2:1 cylinder is dumping 26 percent!

Some engines use a spark to ignite their fuel, and others rely on compression. What does all of that mean? And how do the two ...

Infiniti has unveiled a first-ever variable compression ratio, for a four-cylinder engine that will go into production for 2018.

Chevrolet's big block family of engines has some famous powerplants, but there's a lot of history to miss if you only pay attention to the 396 and 454.

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 ...

This reduces compression in the cylinders and you don't get as big a bang for your buck, so your vehicle loses power. Piston rings can be replaced, but it's an expensive job.

There are lots of options when it comes to Chevy small-block crate engines. Here are seven of the most powerful crate engines that you can buy.