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.
Valve lift is the distance the valve is lifted off its seat at the cam lobesâ highest point. It is determined by a combination of camshaft lobe lift and rocker arm ratio. The amount of valve lift you have and the speed at which the valve moves is a key factor in determining how much torque the engine will produce.