Something All In Automotive

There are several other valve train arrangements.The most popular arrangement for many years uses a pushrod.For this reason, the engine is often called a pushrod engine.The arrangement has the camshaft in the cylinder block.Each part is described below.

1. The valve lifter is around cylinder that rides on the cam.The cam rotates under it.
2. The pushrod is a long rod that goes from the valve lifter up to one end of rocker arm.
3. The rocker arm is pivoted at about its middle.The push rod pushes aganist one end of the rocker arm.The other end of the rocker armrests on the valve stem.
4. The valve spring a coil spring that fits between the cylinder head and a retainer on the stem end of the valve.