calipers

Like a chance meeting between a jealous wife and a flirty ex-girlfriend, having your pistons and valves come in contact can be very bad—and possibly destructive. That’s why it’s important to check piston-to-valve clearance, especially on racing camshafts and aggressive, high-lift street cams. The camshaft and valvetrain experts at COMP Cams put together this easy, seven-step process for checking piston-to-valve