Upon adding 33-inch-tall tires, a flexy long-arm suspension system, and enough camping essentials to forget home while on the trail, our donor's '05 Jeep Rubicon Unlimited felt a bit on the sluggish ...

In the early 1980s, the Jeep Cherokee XJ was launched, and it was the company's first all-new design in almost two decades. It was also the first American off-roader with a unibody design. Those ...

If you don't have one of the old and trusty 4.2L- or 4.0L-equipped Jeeps you probably had one in the past or have a buddy with one. So what do you do when you want to get some more power from a used ...

Owing to its simplistic cam-in-block design, Jeep’s 4.0-liter straight-six is known for two things: Unflappable reliability and a lack of power. Its maximum of 190 horsepower and 235 pound-feet of ...

The 4.0-liter straight-six made famous for its use in Jeeps in the Eighties and Nineties is known for many things, but power isn't one of them. It's a workhorse motor, meant to take abuse and run ...

Among off-roaders, AMC's straight-six is definitely a longtime favorite. It's compact, economical, and seems to live forever, no matter how much abuse it takes. It is so popular, in fact, that it was ...

Jeep, as the brand we know today, was first established by Willys Overland after it produced the company's Quad vehicle for the U.S. Army during World War II. In the years since, Jeep has passed into ...

We may receive a commission on purchases made from links. About a year ago, I blew up my Jeep's engine trying to drive through a deep mud pit. The next day, I bought a motor that had been sitting in a ...