Here is a link to an excellent thread on another forum posted by Humanbeing. It shows the Chinese characters for the Mandarin Chinese names for different motorcycle parts...
I also wrote the street terms in that thread. Mechanic from south often use more senseible words as classical Chinese http://en.wikipedia.org/wiki/Classical_Chinese. Example [火咀] fire mouth vs official [火花塞] spark plug that NEEDS 3 charcter