Gasoline engines burn a mixture of fuel and air. In order to create horsepower, your engine must maintain a good quantity and velocity of air/fuel charge into the combustion chamber. Think of the ...

In this episode of the Autoweek Garage presented by eBay Motors, Andrew Stoy and Graham Kozak add some pep to Graham’s 1988 Jeep Grand Wagoneer’s step. The original plan was to swap the aging, factory ...

In the first installment we dealt with the essentials of spec intake manifolds. The story was intended to establish a level of understanding that would enable more specific information to be helpful, ...

The intake manifold distributes air or air/fuel mixtures to the individual cylinders under varying engine speeds, loads, and environmental conditions. Whether the working flow is pure air, air/fuel, ...