Are there any thoughts about the condition of the other non failed head?
The reason I'm mentioning it is that if the problem has been caused by an overheat wouldn't the other head have been subject to it too, similarly if it was caused by a manufacturing error, for example the interference fit of the seats were incorrect when the head was made isn't there a very good chance the other head was from the same batch?
What's happened so far is bad enough ,it would be almost unimaginable to get it back together with a new head then have the other original head drop a seat!
Mac
The reason I'm mentioning it is that if the problem has been caused by an overheat wouldn't the other head have been subject to it too, similarly if it was caused by a manufacturing error, for example the interference fit of the seats were incorrect when the head was made isn't there a very good chance the other head was from the same batch?
What's happened so far is bad enough ,it would be almost unimaginable to get it back together with a new head then have the other original head drop a seat!
Mac