Do you know what a timing belt or a timing chain is and what they do? Could you find them on your vehicle's engine if you had to? If you answered no, don't sweat it. Both are buried behind a lot of ...

The crank gear (A) is exactly half the size of the cam gear (B). The cam turns only one revolution for every two revolutions of the crank. This is so the exhaust and intake valves will open and dose ...

For years, beltdriven timing drives have been the accepted standard in NASCAR Nextel Cup racing. The same holds true in the Busch Series and Truck Series as well as other top touring racing series.

Every engine has a means of coordinating the timing between the valve train and the rest of the engine. Some engines use a timing chain and some a timing belt. A timing belt has the relatively ...