Cylinder head question

There train of thought must me that even if the head has a crack and if it doesn't leak then it is OK. I will tell you that I have in the past run heads that had small cracks between the seats, because of the valve size it was very narrow and they cracked. There was no water between the seats so they did not leak and ran fine. This was OK in this case because the heads I am talking about, this was common to happen. I actually installed a new set once that had no cracks but upon tear down at the end of the season it had two seats that were cracked I never would have known until I tore it down. I have not heard of Mopar heads having this problem so I probably would not, at this time, run a Mopar head cracked. The cracks I was talking about were visible to the naked eye so magging was not nessesary but I did have them pressure checked. Magging is really for picking up non-visible cracks like on cranks and internal parts that a hairline crack could go unnoticed to the naked eye. Every block or head crack I have ever seen even by magging was still visible by the naked eye. The bottom line is you should do what gives you piece of mind. I myself have no issues running a cracked head in some situations but for others it is a no-way. If you want your heads magged than that is what you should do.

Chuck