From the upside down valve department comes Model A Dave and his 1930 Ford Model A pickup truck. Intake and exhaust valves are the key to the operation of the modern four-cycle internal combustion engine. Early on, these steel shafts with tulip-like extension were referrred to as poppets, or poppet valves. Dave and his Model A were seen and heard popping around at the Dragfest … [Read more...]