Head Milling 101: The Basics of Head Milling to Gain
#0183;#32;Milling involves removing material from the cylinder head (or block deck surface where the heads and block meet) to effectively reduce the volume of the combustion chambers. This method, which is also used to correct warped or imperfect deck surfaces, allows you to control the size of the chamber so you can get the volume needed to achieve a desired compression ratio.