Engine Valve Spring Compressor

valve spring
(Valve Springs) Springs that cause the valves to close when the rocker arms (or tappets on a flathead) are not pushing them open.
The spring which is used to close a valve.

compressor
A device that produces pressure, such as a gas compressor that produces pressurized gas; A devices that squeezes (compresses); A device that reduces the dynamic range of an audio signal
An instrument or device for compressing something
An electrical amplifier that reduces the dynamic range of a signal
a mechanical device that compresses gasses
A machine used to supply air or other gas at increased pressure, e.g., to power a gas turbine
Compressor is a video and audio media compression and encoding application for use with Final Cut Studio and Logic Studio on Mac OS X. It can be used with Qmaster for clustering.

engine
A machine with moving parts that converts power into motion
A thing that is the agent or instrument of a particular process
locomotive: a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks
motor that converts thermal energy to mechanical work
something used to achieve a purpose; "an engine of change"
A railroad locomotive