I’ve never had a bad experience with a MachineArt Moto product. And the new X-Head DOHC cylinder head guards keep that record intact. Designed for the BMW R1200RT engine, they add virtually nothing in ...

Ask any engine builder where he would concentrate his efforts if he could only modify one component in an engine, and most would say the cylinder heads. Even the sleepiest street engine can see power ...

In the November 2012 issue of Mopar Muscle, we began building a bracket engine for the '72 'Cuda owned by local Mopar enthusiast Jim Freed, by assembling the bottom end of a 535-inch big-block. In ...

Horse Sense:With the Z head, Ford Racing Performance Parts has come full circle. Back in the early 5.0 days, its first cylinder head was a streetable-but not emissions-legal-offering called the J302.