Spark plug gapping may sound like one of those old-timey chores, like setting breaker points in a distributor or lubricating the frame, but having the proper spark plugs and ensuring they're properly ...

This is an extreme Champion racing spark plug once used in 15:1 NASCAR superspeedway motors with a radically cut-back side electrode. Spark plug manufacturers usually spot-weld side electrodes to the ...

If you’re like me and you’re unconvinced that hydraulic lifters exist, you’ve probably got a set or 10 of feeler gauges stuffed in the top drawer of your toolbox: you know, the place where you keep ...