Horsepower is becoming easier to make every day. With nitrous, supercharging, electronic fuel injection and killer cylinder heads, achieving horsepower and stratospheric rpm is now easier than ever.

The mailbox is loaded each month with the inevitable "How to I get more power from my..." questions-and many of them are for oddball engines for which there just plain are no speed parts. Pretty much ...

When the 6.5 HP (212 cc) Harbor Freight Predator engine in his kid’s go-kart gave up the ghost after some particularly hard driving, [HowToLou] figured it would be a good time to poke around inside ...

When you consider the crazy monkey motion of reciprocating internal combustion engines it is remarkable they work as well as they do. You have eight pistons and connecting rods doing a “do-si-do” ...