This is an aluminum DOHC (dual overhead camshaft) 16 valve cylinder head. It is a Mitsubishi engine model 4G63. We completely disassembled the head, cleaned it, checked it for cracks, and pressure tested it for leaks. We then gave it a 3-angle valve job and surface before reassembling it with new positive viton valve stem seals.
Motor Mission Machine & Radiator 5435 Desert Point Dr. Las Vegas, Nv. 89118 Phone: (702) 649-2366 or (702) 649-0648 Fax: (702) 649-4133 www.MotorMission.com Facebook.com/MotorMission