I am reading about the valve seat problems and is it mostly on modded trucks or stock also. I have a 03 so with 161,000 on it and should i worry about it?

 

Your cylinder head is cast metal and the valve seats are forged hard metal rings. Both of them have different rates of expansion and contraction. The seats are jammed tightly into the head (interference fit. Seats are slightly bigger than the bore hole that they are pressed into). When you increase your cylinder head temps by lugging your motor, the cylinder head expands faster then the hardened seats, that lets the seats fall out which holds a valve open and there you go, piston broke. So get a pyro. Good luck.

 

Pistonbroke - I like, like your signature, is that the same as being drunk and out of work?

 

First off, a good Albertan can drink their weight(ask Ralph). Are one of you rich Albertan's offering me a job. Sigh !!!!!!!!!!!!!!LOL Take care and keep the hst away. PS, I do admire Ralph.