Octane rating
Videos
An octane rating, or octane number, is a standard measure of a fuel's ability to withstand compression in an internal combustion engine without causing engine knocking. The higher the octane number, t
A US gasoline pump offering five different octane ratings
Gas stations have gasoline with different octane ratings. Higher numbers indicate that the fuel can better avoid unintended combustions within the cylinders of the engine.
A 1940s US propaganda poster using the term "octane" to emphasise power
Ignition timing
Videos
In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near th
Timing light