Single use cylinder head

[dhirocz]

Good point in regards to heat cycles and the head being iron. That would also be something to consider. When you get something rebuilt, you really dont know its history. Playing Russian roulette kind of sucks.

Cummins makes new heads and 'throws them in' with the remans. They have to, because so many cores are useless for anything beyond a boat anchor. Thats my understanding of it anyway. I had to do some asking around last year to learn how to identify the new ones vs the remans. I had asked about an nx head before and was told flat out that they werent available.

Typically I wont use a head core or any cores really for any of my projects unless I know where it came from or its history at least. Too many bad ones. When it comes to my truck, however, new is the only way to go. Like Rawze said, a head is a $10k+ repair, so it really isnt worth the risk to save a few bucks in my opinion.

4 out of 5 by 450k? Wow. Those are horrible odds for something like a cylinder head.