How to use a valve spring compressor?

Stud Mounted Valve Spring Compressor. The stud mounted tool is mainly designed for use when the cylinder head is still mounted to the engine but can also be used on the workbench. It can be used to change valve springs with the engine in the car. This is mainly used on racing and high performance engines that require frequent valve spring replacement. read more

The most common type of valve spring compressor is the manual U-shaped compressor. This tool is fully adjustable in its reach so it can fit over a variety of cylinder heads, and has adjustable forks so it can be tailored to fit a variety of valve spring diameters. read more