I am somewhat perplexed about the advantages and disadvantages regarding the performance of engines with free-flow exhaust. Specifically in the '50s and '60s, free-flow exhaust emphasized "let it all ...

Ordinarily, if you want liquid to flow in only one direction through a pipe, that pipe needs to be equipped with a flap-type valve – which could fail. Now, however, scientists have created a new type ...

SpinTech is reportedly the only muffler manufacturer to offer a complete line of oval inlets/outlets, ranging from a 2 1/2-inch to a whopping 5-inch oval. The oval design comes in handy, especially as ...

If you're buying an old house, beware of old galvanized steel water pipes. These pipes build up with sediment on the inside, making the inside diameter of the pipe smaller and smaller over time, ...