Gearheads and faithful Jalopnik readers already know the basics of an engine's bore and stroke, but for those that might be new here, let's dip our toes in the shallow end. An engine's bore refers to ...

Internal combustion engines are commonly referred to by their displacements whether its old-school cubic inches or more modern CC and liter nomenclature. If you love cars, you've no doubt heard of the ...

BDC(Bottom Dead Center): The position of the piston at the very bottom of its travel down the cylinder. ABDC means "After Bottom Dead Center," and BBDC means "Before Bottom Dead Center." Bore: The ...

Four-cylinders don’t have the silk of a straight-six or the brute punch of a big V8. They shake more and sound meaner than musical. But they’ve moved the world. From brass-era behemoths to modern ...