That's not to say we all don't want to tear a motor down and start from scratch with all of the latest goodies. However, a perfectly viable alternative can be had, with a relatively simple yet ...

While on paper our Boulevard Bruiser ("Ground & Pound," October '09) seemed well at home in the upper rpm. A closer look revealed a less-than satisfactory issue with valve float and subsequently a ...

Roller rockers are not glorious parts. They look trick, but they live a pretty dismal life, working feverishly, always trying to keep things stable. Glory's one thing, but are they worth the cost?

There are several broad rules of thumb that provide clues to whether increasing rocker-arm ratio will prove to be a performance boon with a given engine, cylinder head, and camshaft combination.

Any gearhead worth his or her salt knows that whether it's a SOHC, DOHC, or OHV engine, the camshaft is considered the brain of a four-cycle internal combustion power plant. The camshaft's profile ...