Nismo 180sx Tun

Ok i want to port and polish my head. I have it off and the head is full of carbon and grease and oil. What kinda of chemical should i use to clean that off i was thinking of going to walmart and buying a big plastic storage container and placing the head inside of that with some chemical that will eat though the carbon and stuff but i dont know what i should use. thanks

PSI

Most machine shops will dip it for you and clean all that stuffs off

Propagandalf

Simple Green or Castrol Super Clean will do it.