There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

General Motors’ all-new 3.9L V6 has been honored with a Breakthrough Technology award by Popular Mechanics for its innovative use of variable valve timing in an overhead valve engine. For ages GM has ...

Over-engineered engines like the 36-cylinder Lycoming XR-7755 and Napier Deltic's triangular nightmare made mechanics weep ...

While Dodge diesel trucks didn't always have Cummins engines, their shared history dates all the way back to 1989. That's when the inline six-cylinder 5.9-liter Cummins diesel first appeared in Dodge ...

The key ingredient to maximizing the peak performance of a diesel engine is increasing the amount of diesel being burned. On old mechanical-injection engines, the only way to do this was to modify the ...