Jock itch (tinea cruris) is a fungus, the same one that causes athlete's foot and scalp ringworm. The groin area is the perfect place for the fungi to grow and cause a fungal infection because it is moist, warm and dark.
The camshaft lift is the resultant net rise of the valve from its seat. The farther the valve rises from its seat the more airflow can be provided, which is generally more beneficial. Greater lift has some limitations.
Camshaft Duration, Lift, and Overlap. Before taking camshaft lobe measurements, the camshaft must be carefully inspected for straightness, scoring, and galling. Camshaft lobes wear, and effect valve timing and operation. Camshaft duration, lift, and overlap are important factors that contribute to valve timing and ultimately engine performance.