In my 35-plus years of working on cars, I have encountered nearly every frustrating troubleshooting problem in the book. Part of the issue stems from my affinity for old Jeeps and classic cars, which ...

SpaceX has notched up another milestone in the development of Starship, fixing its Raptor Vacuum engine to the spacecraft and test-firing it for the first time. This marks another important step in ...

SpaceX has posted a dramatic video of the first firing of its Raptor vacuum engine integrated onto a Starship prototype. Starship is a reusable launch system being developed by Elon Musk's company to ...

A few months ago SpaceX and Elon Musk were going to only make one version of the new Raptor engine for initial tests and flights but now Elon tweets that a vacuum optimized Raptor engine could be ...

As your car gets older, it can begin to run, shall we say…poorly. And that’s even with keeping up with oil changes, cleaning the air filter, and throwing fresh plugs in it whenever you should. Part of ...

Obligatory, I'm not a rocket scientist/engineer. Hell, I'm not even a science graduate. My question is how exactly the test, tests, what is supposed to happen in vaccum, when it is done in atmosphere?

Some very valuable tuning tools are greatly misunderstood. Take the lowly vacuum advance canister. Many enthusiasts dismiss this device as superfluous—or worse—only for emission-controlled engines.

The last time we had this 470-inch Mopar big block on the dyno, it made 751 hp with Trick Flow heads and a dry sump oiling system. The dry sump setup that we used for those tests worked great, but it ...

Spacex fired up the first Raptor engine designed for the vacuum of space ahead of its future use on its Starship rockets. The Raptor Vacuum was recently shipped from the company’s California ...

SpaceX lit up the Texas coast again by firing an engine not designed for use on the ground. The company installed and performed a test burn one of its Raptor Vacuum engines for the first time attached ...